Fravo.com Certification Made Easy MCSE, CCNA, CCNP, OCP, CIW, JAVA, Sun Solaris, Checkpoint World No1 Cert Guides info@Fravo.com Composite Exam Exam 642-891 Edition 2.0 © Copyrights 1998-2005 Fravo Technologies All Rights Reserved 642-891 Congratulations!! You have purchased a Fravo Technologies Study Guide This study guide is a complete collection of questions and answers that have been developed by our professional & certified team You must study the contents of this guide properly in order to prepare for the actual certification test The average time that we would suggest you for studying this study guide is approximately 15 to 20 hours and you will surely pass your exam We guarantee it! GOOD LUCK! DISCLAIMER This study guide and/or material is not sponsored by, endorsed by or affiliated with Microsoft, Cisco, Oracle, Citrix, CIW, CheckPoint, Novell, Sun/Solaris, CWNA, LPI, ISC, etc All trademarks are properties of their respective owners Guarantee If you use this study guide correctly and still fail the exam, send a scanned copy of your official score notice at: info@fravo.com We will gladly refund the cost of this study guide or give you an exchange of study guide of your choice of the same or lesser value This material is protected by copyright law and international treaties Unauthorized reproduction or distribution of this material, or any portion thereof, may result in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under law © Copyrights 1998-2005 Fravo Technologies All Rights Reserved http://www.fravo.com http://www fravo.com 642-891 Note: There are 275 BSCI questions There are 238 BCMSN questions The total number of questions is 513 Part 1, Building Scalable Cisco(r) Internet works (BSCI(r)) BSCI note: BSCI Section A contains 62 questions BSCI Section B contains 82 questions BSCI Section C contains 131 questions The total number of BSCI questions is 275 BSCI Section A QUESTION Match the OSPF area type in the options by dragging-and-dropping it to the description in the target is Answer: Explanation: A Stub Areas: These areas not accept routes belonging to external autonomous systems (AS); however, these areas have inter-area and intra-area routes In order to reach the outside networks, the routers in the stub area use a default route which is injected into the area by the Area Border Router (ABR) B Normal Areas: These areas can either be standard areas or transit (backbone) areas Standard areas are defined as areas that can accept intra-area, inter-area and external routes C Backbone area is the central area to which all other areas in OSPF connect D Totally Stub Areas: These areas not allow routes other than intra-area and the default routes to be propagated within the area The ABR injects a default route into the area and all the routers belonging to this area use the default route to send any traffic outside the area E NSSA: This type of area allows the flexibility of importing a few external routes into the area while still trying to retain the stub characteristic Assume that one of the routers in the stub area is connected to an external AS running a different routing protocol, it now becomes the ASBR, and http://www fravo.com 642-891 hence the area can no more be called a stub are H A However, if the area is configured as a NSSA, then the ASBR generates a NSSA external link state advertisement (LSA) (Type-7) which can be flooded throughout the NSSA are i A These Type-7 LSAs are converted into Type-5 LSAs at the NSSA ABR and flooded throughout the OSPF domain Reference:http://www.cisco.com/en/US/tech/tk365/tk480/technologies_tech_note09186a0080094 a74.shtml QUESTION Which command would display OSPF parameters such as filters, default metric, maximum paths, and number of areas configured on a router? A show ip protocol B show ip route C show ip OSPF interface D show ip OSPF Answer: A Explanation: The show ip protocols command, displays parameters about timers, filters, metrics, network, and other information for the entire router Reference: Building Scalable Cisco Networks (Cisco press) page 133 QUESTION Which routing protocol multicasts routing updates using Class D address 224.0.0.9? A EIGRP B OSPF C IGRP D RIPv2 Answer: D Explanation: Class D addresses are not as widely used Class D addresses are multicast addresses; some Class D multicast addresses used by routing protocols are as follows: • OSPF - 224.0.0.5 and 224.0.0.6 • Routing Information Protocol version (RIPSv2) - 224.0.0.9 • EIGRP - 224.0.0.10 Reference: Building Scalable Cisco Networks (Cisco press) page 69 QUESTION The following example is a configuration on a 256 kbps HDLC interface: interface serial 0/0bandwidth 56 ip bandwidth-percent eigrp 200 Based on this example, how much bandwidth is allocated for EIGRP traffic? A 56 kbps B 112 kbps C 128 kbps D 256 kbps Answer: B Explanation: The bandwidth-percent command tells EIGRP what percentage of the configured bandwidth it may use The default is 50 percent Since the bandwidth command is also used to set the routing protocol metric, it may be set to a particular value for policy reasons The bandwidth-percent command can have values greater than 100 if the bandwidth is configured artificially low due to such policy reasons Reference: http://www.cisco.com/en/US/tech/tk365/tk207/technologies_tech_note09186a0080094063.shtml QUESTION A problem was reported that the 10.10.10.0/24 prefix was not injected into the http://www fravo.com 642-891 local BGP table on Router A The following information is available from Router A: configuration: router bgp 65001network 10.0.0.0 neighbor 172.16.1.1 remote-as 65002no auto-summary routing table information: show ip route | include 10O 10.10.0/24 [110/11] via 192.168.1.1, 2d00h, Ethernet0/0 Why is this prefix not in the local BGP table? A This route is not a BGP learned route B The network command is wrong C The 172.16.1.1 neighbor is down D The prefix 10.10.10.0/24 is not a connected route Answer: A Explanation: The show ip route command will not display the BGP table You must use the show ip bgp command to display the entries in the BGP routing table Reference: Building Scalable Cisco Networks (Cisco press) page 348 QUESTION Which two characteristics are associated with the distribution layer of the three-layer hierarchical network design model? A Reliable transport structure B Route redistribution C Optimized transport structure D Address aggregation E Unauthorized entry access control lists Answer: B, D QUESTION Which command displays RIP routing transactions? A show ip rip database B show ip route C show ip protocols rip D debug ip rip E debug ip routing Answer: D Explanation: debug ip rip Use the debug ip rip EXEC command to display information on RIP routing transactions The no form of this command disables debugging output Reference:http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_command_referen ce_chapter09186a008007ff66.html QUESTION What are the three general address types of IPv6? (Choose three) A Private B Unicast C Broadcast D Public E Multicast F Any cast Answer: B, E, and F • IPv6 Address Type: Unicast -An IPv6 unicast address is an identifier for a single interface, on a single node A packet that is sent to a unicast address is delivered to the interface identified by that address • IPv6 Address Type: Anycast -An anycast address is an address that is assigned to a set of interfaces that typically belong to different nodes A packet sent to an anycast address is delivered to the closest interface-as defined by the routing protocols in use-identified by the http://www fravo.com 642-891 anycast address • IPv6 Address Type: Multicast - An IPv6 multicast address is an IPv6 address that has a prefix of FF00:: /8 (1111 1111) An IPv6 multicast address is an identifier for a set of interfaces that typically belong to different nodes Reference:http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_ch apter09186a0080110dd2.html#99899 QUESTION Which method will conceal the internal IP address details from the outside world? A Subnetting B Supernetting C Challenge Handshake Protocol D Usernames and passwords Answer: B Explanation: In large internet works, hundreds or even thousands of networks can exist In these environments, it is often not Desirable for routers to maintain all these routes in their routing table Route summarization (also called route aggregation or supernetting) can reduce the number of routes that a router must maintain because is it a method of representing a series of network numbers in a single summary address Reference: Building Scalable Cisco Networks (Cisco press) page 250 QUESTION 10 Exhibit: What is the default OSPF network type on the s0 interface of router Contoso1? http://www fravo.com 642-891 A Nonbroadcast B Broadcast C Point-to-multipoint D Point-to-point E Point-to-multipoint nonbroadcast Answer: E Explanation: There are three different scenarios for NBMA interfaces • Pure Multipoint Configuration (No Sub interfaces) • Pure Point-to-Point Configuration (each VC on a separate sub interface) • Hybrid Configuration (point-to-point and multipoint sub interfaces) Reference:http://www.cisco.com/en/US/tech/tk365/tk207/technologies_tech_note09186a0080094 063.shtml#hybrid QUESTION 11 Why is it necessary to redistribute or advertise IGP (such as OSPF and EIGRP) routes into BGP? A So BGP can propagate this information to other IGP neighbors B So BGP can propagate this information to other IBGP neighbors C So BGP can propagate this information to other EBGP neighbors D So BGP can propagate this information to other OSPF neighbors http://www fravo.com 642-891 Answer: B Explanation: How BGP Selects Paths A router running Cisco IOS Release 12.0 or later does not select or use an IBGP route unless both of the following are true: • the router has a route available to the next-hop router • the router has received synchronization via an IGP (unless IGP synchronization has been disabled) Reference:http://www.cisco.com/en/US/products/sw/iosswrel/ps1826/products_configuration_gui de_chapter09186a00800877b5.html QUESTION 12 Which IP address is known as the all OSPF DRs and BDRs address? A 224.0.0.5 B 224.0.0.6 C 224.0.0.9 D 224.0.0.11 Answer: B Explanation: 224.0.06 is the address of all OSPF DRs and BDRs Reference: Building Scalable Cisco Networks (Cisco press) page 114 QUESTION 13 What are three characteristics of an Autonomous System (AS) in a BGP network? (Choose three) A Within an AS, all routers must run either BGP or IBGP B An AS uses exterior gateway protocols (EGPs) to exchange information with other autonomous systems C An AS is a group of routers under the same technical administration D Within an AS, routes learned through BGP can be redistributed using interior gateway protocols E Within an AS, routers learned through an interior protocol cannot be redistributed using BGP to other autonomous systems Answer: B C D Explanation: A Exterior Gateway Protocol (EGP) routing protocol used to connect between autonomous systems B The use of the term autonomous system in connection with BGP stresses the fact that the administration of an autonomous system appears to other autonomous systems to have a single coherent interior routing plan, and presents a consistent picture of those networks that are reachable through it C BGP is used between autonomous systems Reference: Building Scalable Cisco Networks (Cisco press) page 313 QUESTION 14 When using VLSM in an EIGRP network, where can route summarization be accomplished? A Manually on any router interface B Only at classless network boundaries C Only at classful network boundaries D Dynamically at the supernet boundary Answer: C Explanation: Sending route summaries - routing information advertised out an interface is http://www fravo.com 642-891 automatically summarized at major (classful) network address boundaries by RIP, IGRP, and EIGRP Reference: Building Scalable Cisco Networks (Cisco press) page 79 QUESTION 15 Cisco routers perform route summarization automatically for which three routing protocols? (Choose three) A IS-IS B IGRP C OSPF D EIGRP E RIP v.1 Answer: B, D, E Explanation: Sending route summaries - Routing information advertised out an interface is automatically summarized at major (classful) network address boundaries by RIP, IGRP, and EIGRP Specifically, this autonomous summarization occurs for those routes whose classful network address differs from the major network address of the interface to which the advertisement is being sent Reference: Building Scalable Cisco Networks (Cisco press) page 79 QUESTION 16 When would static routing be preferable to using a dynamic routing protocol? (Choose two) A A medium to large network with redundant paths B Networks with a single entry point C Low maintenance routing is required D Highly adaptable networks E High degree of control in path selection is required Answer: A, E Explanation: • Define specific routs to use when two autonomous systems must exchange routing information, rather than having entire routing tables exchanged • Define routes to destinations over a WAN link to eliminate the need for a dynamic routing protocol- that is, when you not want routing updates to enable or cross the link Reference: Building Scalable Cisco Networks (Cisco press) page 463 QUESTION 17 What is the recommended way to perform route redistribution when exchanging routes between two protocols? A Use one way route redistribution when there is one path B Use one way route distribution when there are multiple paths C Use static routes when there are multiple paths D Use two way route distributions when there is one path E Use two way route redistribution where there are multiple paths F Use static routes when there is one path Answer: B C Explanation: B One way redistribution- To avoid routing loops and problems with varying convergence time, allow routes to be exchanged in only one direction, not both directions In the other direction, you should consider a default route C When you want to prevent routing loops - Many companies have large enough networks that redundant paths are prominent In some cases, for example, when a path to the same destination is learned from two different routing protocols, you may want to filter the propagation of one of the http://www fravo.com 642-891 paths Reference: Building Scalable Cisco Networks (Cisco press) page 472 QUESTION 18 At which location in a network does IS-IS use level-1 routing? A Between domains B Between areas C Between intermediate systems in the same are D Between end systems and intermediate systems in the same are Answer: C Explanation: A two-level hierarchy is used to support large routing domains A large domain may be administratively divided into areas Each system resides in exactly one are A Routing within an area is referred to as Level routing Routing between areas is referred to as Level routing A Level Intermediate System (IS) keeps track of the paths to destination areas A Level IS keeps track of the routing within its own are A For a packet destined for another area, a Level IS sends the packet to the nearest Level IS in its own area, regardless of what the destination area is Then the packet travels via Level routing to the destination area, where it may travel via Level routing to the destination It should be noted that selecting an exit from an area based on Level routing to the closest Level IS might result in suboptimal routing.2 Reference:http://www.cisco.com/en/US/tech/tk365/tk381/technologies_white_paper09186a00800 a3e6f.shtml QUESTION 19 Given the following OSI IS-IS NSAP address: 47.040C.0061.040C.0056.0D12.00 What is the Area ID? A 00 B 46 C 47.040C D 47.040C.0061 E 040C.0056.0D12 Answer: D Explanation: An NSAP address (figure 7) has two major parts: the initial domain part (IDP) and the domain specific part (DSP) (Figure 7) The IDP consists of a 1-byte authority and format identifier (AFI) and a variable-length initial domain identifier (IDI), and the DSP is a string of digits identifying a particular transport implementation of a specified AFI authority Everything to the left of the system ID can be thought of as the area address of a network node Figure The NSAP address Reference:http://www.cisco.com/en/US/tech/tk365/tk381/technologies_white_paper09186a00800 a3e6f.shtml QUESTION 20 What is the purpose of the network command when configuring BGP? A Local routes matching the network command are filtered from the BGP routing table B Local routes matching the network command can be installed into the BGP routing table C Routes matching the network command will be filtered from BGP routing updates D External routes matching the network command will be installed into the BGP routing table Answer: B Explanation: Use the network router configuration command to permit BGP to advertise a network if it is present in the IP routing table Reference: Building Scalable Cisco Networks (Cisco press) page 342 QUESTION 21 Which IOS features can be used to prevent routing loops between two http://www fravo.com 642-891 purpose Reference: Cisco, Configuring IP Multilayer Switching Incorrect Answers B: This is not required The default value can be used C: The external MLS -RP (Multi Layer Switching Route Processor) is not required to be included Explanation: InterVLAN communication requires a layer device In this scenario the router is used Incorrect Answers: Layer switches cannot be used for interVLAN communication QUESTION 128 You have just told your trainee that a Catalyst 8500 switch supports layer switching He is not convinced since he knows that switches work at Layer of the OSI model He asks you how the switch can accomplish this What should you tell him? A MLS is used B CEF is used C NFFC is used D MSFC is used Answer: B Explanation: Cisco Express Forwarding (CEF) provides Layer switching based on a topology map of the entire network CEF been developed for the Cisco 12000 Gigabit Switch Router (GSR), the Catalyst 8500, and the Cisco 7500 QUESTION 129 You must configure your Catalyst 5000 Switch You must troubleshoot the Multilayer Switching Engine (MLS-SE) You want to identify the ID of the attached Multi Layer Switching Route Processor (MLS-RP) router You connect to the catalyst and reach the CLI What command should you use? Which command on the Catalyst 5000 MLS-SE displays the ID of an attached MLS-RP router? A show mls B show mls id C show mls entry ip-address D show mls entry rp ip-address Answer: A Explanation: The show mls rp command displays IP MLS details, including specific information about MLSP The output includes MLSP-ID used in MLSP messages Reference: Cisco, Configuring IP Multilayer Switching Incorrect Answers B, C, and D: No such commands QUESTION 130 A trainee is curios about networking technologies However, he is confused about some basic facts concerning Ethernet What should you tell him? 181 http://www fravo.com 642-891 A CSMA/CD technology is not used on switch ports B Cabling for Fast Ethernet is limited to UTP and fiber optic C Full-duplex operation increases Ethernet transmission speed D Cabling distances should not exceed 328 meters between active devices Answer: C Explanation: Two-way communication increases the throughput Incorrect Answers A: CSMA/CD must be used if the switch port is connected to a hub B: STP can be used as well In particular 100BaseVG STP use STP cabling D: The maximum distance for UTP and STP is 100 meters Furthermore, fiber optic cabling can exceed a distance of 328 meters QUESTION 131 A trainee is concerned by broadcast traffic In particular she does not understand how it is possible to block broadcast from flooding trunk lines that should not be the destination of the broadcasts Which technique is used to prevent the broadcasts from flooding these trunk links? A ISL trunking B VTP pruning C ATM LANE trunking D VLAN authentication Answer: B Explanation: VTP pruning is used to preserve bandwidth You can configure the VTP to reduce the amount of broadcasts, multicasts, and other unicast packets VTP restricts broadcasts to only trunk links that must have the information If a trunk link does not need the broadcasts, the information is not sent Reference: CCNP Switching Study Guide #640-507, Sybex Press, Page 132 Incorrect Answers A: ISL trunking is used to configure an Ethernet trunk It is not directly used to prevent broadcast traffic C: LAN Emulation (LANE) is used to communicate with multiple VLA Ns over ATM ATM Lane trunking does not apply in this scenario D: VLAN authentication is used for security, not to stop broadcast traffic QUESTION 132 The company is planning to use Cisco IP telephony You are required to select which switches that would be appropriate Furthermore, the Phones most be powered through the switches (i.e inline power support), not through wall power Which switches meets the requirements? (Select three.) A 3500 series B 4000 series C 5000 series D 6000 series Answer: A, B, D Explanation: A: With the expansion of inline power needs for IP phones and wireless access points, the Catalyst 3524-PWR XL is the leading choice B: The Cisco Catalyst 4000 Family Inline Power 10/100BaseT Ethernet Switching Module intelligently detects and provides power to IP enabled devices such as Cisco IP Phones D: The Cisco Catalyst 6000 Family Inline Power 10/100BaseT Ethernet Switching Module extends the voice capabilities of the Catalyst backbone to the enterprise wiring closet and branch office 182 http://www fravo.com 642-891 Note 1: Each Cisco IP Telephone provides Toll-quality audio and doesn't require a companion PC Because it is an IP-based telephone, it can be installed anywhere on a corporate local or wide area IP network Note 2: Inline power is 48-volt DC power provided over standard Category unshielded twistedpair (UTP) cable up to 100 meters Instead of requiring wall power, terminal devices such as IP telephones can utilize power provided from the Catalyst Inline Power Patch Panel Reference: Cisco product information Incorrect Answers C: Catalyst 5000 series switches are used in large campuses to provide access for more than 250 users They support 10/100/1000Mbps Ethernet switching They don't support inline power for Cisco IP phones however QUESTION 133 You have configured an Ether Channel bundle and it is now operational on a trunk You are worried that the ports in the bundle could be disabled What could cause this? (Choose two) A disabling port security B excessive errors on one port C changing VLAN mode to dynamic D changing the speed attribute of one port Answer: C, D Explanation: C: Do not configure the ports in an Ether Channel as dynamic VLAN ports It could adversely affect switch performance D: All ports in an Ether Channel should be configured to operate at the same speed and duplex mode (full or half duplex) Reference: Cisco, Configuring Fast Ether Channel and Gigabit Ether Channel QUESTION 134 You are required to configure a port for duplex mode on a 2924XL switch You connect to the switch and reach the CLI What should you next? A duplex B set duplex C port duplex D set port duplex E set duplex port Answer: A Explanation: The duplex command is to set the port to duplex mode on 1900/2800/2900XL/2924XL switches Incorrect Answers B, C; E: There are no such commands on a 2924XL switch D: The set port duplex command is to set the port to duplex mode on a Catalyst 5000 Switch QUESTION 135 You must disable Cisco Group Management Protocol (CGMP) on your Catalyst 4000 switch Which IOS command should you issue? A no cgmp B no ip cgmp C set cgmp disable D set multicast cgmp disable Answer: C Explanation: The set cgmp command is used to enable or disable CGMP on the switch Syntax: set cgmp {enable | disable} This command is used on Catalyst 5000 switches, Catalyst 4000 switches, Catalyst 2926G switches, Catalyst 2948G switches, and Catalyst 2980G 183 http://www fravo.com 642-891 switches QUESTION 136 You must enable Cisco Group Management Protocol (CGMP) on an interface on your Catalyst 5000 switch You connect to switch and enter interface configuration mode Which IOS command should you use? A cgmp B ip cgmp C cgmp enable D ip igmp enable cgmp Answer: B Explanation: In this scenario CGMP is already enabled on the switch We must enable it on an interface The ip cgmp interface configuration command is used to enable Cisco Group Management Protocol (CGMP) on an interface QUESTION 137 A trainee is concerned about the function of the Cisco Group Management Protocol (CGMP) What should you tell her? A The router broadcasts CGMP frames to all CGMP-enabled interfaces B The router forwards all IGMP control packets to CGMP-enabled switches C The router adds each multicast host MAC address to its CAM table for the destined port D The router forwards CGMP packets to a well-known address to which all CGMP switches listen Answer: D Explanation: CGMP was first implemented by Cisco to restrain multicast traffic in a layer network CGMP frames are Ethernet frames with the destination MAC address: 01-00-0c-dd-dddd Reference: Multicast in a Campus Network: CGMP and IGMP Snooping http://www.cisco.com/warp/public/473/22.html#CGMP QUESTION 138 What should you choose if connectivity up to distances of 100km over SMF must be supported? A giga stack GBIC B 1000BaseZX GBIC C 1000BaseSX GBIC D 1000BaseLX/LH GBIC Answer: B Explanation: The Cisco Gigabit Interface Converter (GBIC) module slots support the following modules to provide flexibility in media and distance options: • 1000BaseSX GBIC module for fiber connections of up to 550 meters • 1000BaseLX/LH GBIC module for fiber connections of up to 10 kilometers • 1000BaseZX GBIC module for fiber connections of up to 100 kilometers • Giga Stack GBIC module for creating a 1-Gbps stack configuration of up to nine Catalyst 3500 XL switches Reference: Cisco, GBIC Module Slots QUESTION 139 Your Contoso trainee wants to enable CGMP on a Cisco 5000 switch What should you tell her? A IGMP snooping must also be enabled on the switch B The switch must be configured to receive all IGMP control packets C The switch must have a network connection to a CGMP-enabled router 184 http://www fravo.com 642-891 D The ports connected to other CGMP-enabled devices must be statically configured Answer: C Explanation: CGMP must be used when hosts connect to a router via a Catalyst switch CGMP must be activated on both the router and the switch QUESTION 140 Bob, your Contoso trainee, wants to set up some VLANs He uses a MAC addresses database to assign VLAN membership Which type of VLAN has Bob configured? A Static VLANs B Dynamic VLANs C Automatic VLANs D Host-based VLANs E Source-based VLANs Answer: B Explanation: Cisco administrators can use the VLAN Management Policy Server (VMPS) service to set up a database of MAC addresses that can be used for dynamic addressing of VLANs Incorrect Answers A: In a static VLAN, the administrator assigns switch ports to the VLAN, and the association does not change until the administrator changes the port assignment C, D, E: No such things QUESTION 141 You are troubleshooting a Cisco 5000 Catalyst switch You want to determine the number of CGMP packets dropped Which command should you use? A show cgmp counters B show ip cgmp errors C show cgmp statistics D show ip cgmp counters Answer: C Explanation: The show gmrp statistics command is used to display GMRP-related statistics for a specified VLAN Included in the output is Total GMRP packets dropped: Syntax: show gmrp statistics [vlan] Incorrect Answers A, B, D: There are no such commands QUESTION 142 Your Contoso int trainee is confused on the difference between set-based commands and IOS-based commands In particular, he asks you which command he should use on a set-based CLI switch to set the system prompt What should you tell him? A hostname name-string B set prompt prompt-string C set hostname name-string D set system prompt prompt-string Answer: B Explanation: On a set-based switch, for example, a Catalyst 5000 switch the set prompt string command is used Incorrect Answers A: On an IOS-based switch, for example a1900 switch, the hostname name string command is used C, D: These commands are not used either on set-based or an IOS-based system QUESTION 143 Diagrams You set a VLAN environment as indicated in the diagram above 185 http://www fravo.com 642-891 A junior technician asks you how VLAN Contoso2 is able to communicate with VLAN Contoso6 You explain to him that this is an example of interVLAN communication He asks you to indicate which device in the diagram provides this Click on the appropriate device in the diagram QUESTION 144 You want to connect two access layer switches You must use 10/1000 Ethernet ports Which cabling could you use? A Cat-5 UTP crossover cable B RJ-45 to DB-9 terminal cable C RJ-45 to RJ-45 rollover cable D RJ.45 to RJ-45 straight-through cable Answer: A Explanation: Cat UTP crossover cabling can be used to connect two switches Reference: Catalyst Switch Cable Guide http://www.cisco.com/warp/public/473/132.html Incorrect Answers B: A Management Cable, a RJ-45 to DB-9 terminal cable, is used to connect a PC to a switch (or router) C: A RJ-45-to-RJ-45 rollover cable is used to connect the console port of the switch to a console PC or terminal D: A Straight cable can be used to connect a switch to a router or a workstation QUESTION 145 You are setting up the Port Aggregation Protocol (PAgp) on a single switch What could prevent PAgP from function properly? (Select two.) A Trunk ports B Dynamic VLANS C Port duplex mismatch D Spanning tree mismatch Answer: B, C Explanation: B: For PAgP to work, all the ports must be configured with static VLANs C: All ports must be the same speed and duplex QUESTION 146 You are configuring a Catalyst 5000 switch You want to set the trunking encapsulation mode for a port Which command should you use? A Set trunk B Set Vtp mode C Set port mode 186 http://www fravo.com 642-891 D Set encapsulation Answer: A Explanation: The set trunk command configures trunking on a port Incorrect Answers B: The set vtp mode command sets the VTP mode of the switch C, D: There are no such commands QUESTION 147 What is valid about the catalyst software functions provided by the embedded RMON Agent and the switch Probe? A SPAN is an option of the Switch Probe function B The function use of all RMON groups as well as RMON2 C the function of switch Probe offers an in-band link to the network manager D RMON offers the ability to remotely monitor, telnet and manage network device E Statistics ,events, history and alarms are supported by the IETF document defining RMON (RFC 1757) Answer: E Explanation: Embedded ROM supports statistics, history, alarms and events as specified in RFC 1757, Reference: RFC 1757, Remote Network Monitoring Management Information Base QUESTION 148 A junior Contoso trainee asks you what a VLAN is What should you tell him? A A VLAN is a routed internet work B A VLAN is a single broadcast domain A A VLAN is a group of switch ports that communicate through RSM C A VLAN is a group of switch ports that are members of the same multicast group Answer: B Explanation: A VLAN implements a single broadcast domain Incorrect Answers A: VLAN operate at layer 2, not at layer C: A Route Switch Module (RSM) is used for communication between VLANs D: Multicast and VLANs are not connected concepts QUESTION 149 Cisco uses the concepts of Core Layer, Distribution Layer and Access Layer What can be said about distribution layer switches? (Select two) A low cost B interVLAN routing C robust Layer throughput D high port density to connect to end users Answer: B, C Explanation: Distribution Layer Switches used in the distribution layer should offer these features: • Aggregation of access layer devices • High Layer throughput-InterVLAN routing • Robust Layer functionality • Security • Media translation Incorrect Answers Note: Access layer devices have the following characteristics : • High port density to connect to end users • Low cost 187 http://www fravo.com 642-891 • Uplinks to higher layers of the campus network • Layer services (traffic filtering and VLAN membership) A: Distribution layer switch not have low costs D: Access layer switches have high port density to connect to end users QUESTION 150 You want to purchase switches that support redundant supervisor engines Which models should you consider? (Choose two) A Catalyst 4000 B Catalyst 5500 C Catalyst 6000 D Catalyst 12000 Answer: B, C Explanation: B: The Catalyst 5500 series switches support an optional redundant supervisor engine C: Catalyst 6000 family switches support fault resistance by allowing a redundant supervisor engine to take over if the primary supervisor engine fails QUESTION 151 Your Contoso trainee knows that each switch has a unique 8-byte Bridge ID value She asks you how this value is determined What should you tell her? A Bridge Priority and MAC address B Bridge priority and root Path Cost C Management IP address and MAC address D Management IP address and Root Path Cost Answer: A Explanation: The bridge ID is a combination of the bridge priority and base MAC address QUESTION 152 You are required to configure a Catalyst 4000 switch You power the switch up, connect to it and reach the CLI Now you want to configure the management interface How you assign an IP address to this interface? A interface tty B ip address sc0 C set interface sc0 D set ip manage address Answer: C Explanation: The interface sc0 is an internal management interface that is connected to the switching fabric and participates in all of the functions of a normal switch port Configure an IP address for sc0 by issuing the command set interface sc0 This is the correct procedure for Catalyst 4000, 5000, 6000 Switches Another procedure is for 2900/3500 XL Switches Reference: Configuring a Management IP Address on Catalyst Switches for Catalyst 4000, 5000, 6000 and 2900/3500 Series Switches http://www.cisco.com/warp/public/473/8.html Incorrect Answers A, B, D: There are no such commands QUESTION 153 You want to configure your switch with the Port Fast feature What should you take into consideration? (Select two.) A It increases the forward delay time interval to 30 seconds B It should be enabled on ports connecting to hubs and routers C It should not be enabled on ports with redundant links to another switch D It enables fast connectivity to be established on the access layer port to a booting workstation 188 http://www fravo.com 642-891 Answer: C, D Explanation: C: Port fast on redundant links could cause network loops D: Port Fast is used to make a point-t o-point port almost immediately enter into forwarding state by decreasing the time of the listening and learning states Incorrect Answers A: Port Fast decreased the forward delay time B: Ideally Port Fast should only be used on point-to-point links connected only to workstations or servers QUESTION 154 Your trainee asks you which MAC address corresponds to the multicast IP address of 224.0.1.55 What should you tell her? A 00-00-00-00-01-55 B 00-01-E0-00-01-37 C E0-00-01-37-FF-FF D 01-00-5E-00-01-37 Answer: D QUESTION 155 You are required to purchase 10 switches They must all support the VLAN Management Policy Server (VMPS) feature Which switches would come into consideration? (Choose three) A 2900XL series B 3500XL series C 5000 series D 8500 series Answer: A, B, C Explanation: A, B: Catalyst 2900 and 3500 Series XL Features include VMPS C: VMPS is present on all Catalyst 5000 Family switches Note: The VLAN Management Policy Server (VMPS) service is used to set up a database of MAC addresses that can be used for dynamic addressing of VLANs VMPS is a MAC-address-to-VLAN mapping database QUESTION 156 What happens, by default, when a layer switch receives multicast on one of its ports? A It blocks multicast traffic on all ports B It delivers multicast traffic to all ports C It delivers Multicast traffic only to ports that subscribe to it D It delivers multicast traffic only to clients that are a member of a multicast group Answer: C Explanation: Multicasts send the frame to only certain networks or subnets and all hosts within that network or subnet QUESTION 157 You are required to set up a Catalyst 5000 switch for multilayer switching using a multilayer switching route processor What configuration tasks should you take? (Select three.) A setting the MLS aging time B including an external MLS-RP C enabling MLS on every interface 189 http://www fravo.com 642-891 D configuring the MLS management interface E adding interfaces to the VTP domain on the switch Answer: B, C, D Explanation: B: The external MLS-RP (Multi Layer Switching Route Processor) must be included C: The Multilayer Switching Protocol must be enabled The command is mls rp ip D: MLSP packets are sent and received through the management interface You must specify at least one router interface as a management interface If you not specify a management interface, IP MLS will not function Th e mls rp management-interface command is used for this purpose Reference: Cisco, Configuring IP Multilayer Switching Incorrect Answers A: This is not required The default value can be used E: Perform this configuration task only if the switch is a VTP server or client QUESTION 158 Your Contoso trainee Bob is curios about the Multilayer Switching (MLS) cache What should you tell him? A MLS cache entries support unidirectional flows B The MLS-RP stores routing information in the MLS cache C The MLS -SE deletes a cache entry when it detects a TCP FIN ACK D The MLS -RP creates MLS cache entries based on known data flows Answer: A Explanation: An MLS cache entry is created for the initial packet of each flow Incorrect Answers B: Routing information is not stored in the MLS cache C: The state and identity of the flow are maintained while packet traffic is active; when traffic for a flow ceases, the entry ages out D: The MLS -SE, not the MLS-RP creates MLS cache entries QUESTION 159 Yo u want to remove one particular VLAN from an existing trunk link Which IOS command should you use? A set vlan B clear vtp C clear port D clear trunk Answer: A Explanation: The clear vlan command clears a VLAN B: The clear vtp command clears VTP statistics C: The clear port command clears port broadcast suppression D: The clear trunk command clears trunk ports All VLANs would be cleared QUESTION 160 You are defining a MLS management interface on the MLS-RP Your Trainee asks you want the purpose of the MLS management interface is What should you tell her? A It is used to manage the MLS cache B It is used to send and receive MLSP packets C It is used to make routing decisions for the MLS -SE D It is used to define the primary route processor in the VTP domain Answer: B 190 http://www fravo.com 642-891 Explanation: MLSP packets are sent and received on the management interface These packets include information on about hardware-switched flows QUESTION 161 You want multilayer switching to cooperate with input access lists Which IOS command should you use to accomplish this goal? A ip mls input-acl B mls rp ip input-acl C set input-acl enable D set mls input-acl enable Answer: B Explanation: By using the mls rp ip input-acl command in addition to normal MLS-RP configuration commands on a router interface, an inbound flow mask is supported Incorrect Answers: A, C, D: No such commands QUESTION 162 You are required to assign a VLAN ID to a route processor interface Which command should you use? A mls vlan vlan-id-number B set mls vlan vlan-id-number C mls rp vlan-id vlan-id-number D set mls vtp-domain vlan-id-number Answer: C Explanation: The mls rp vlan-id [vlan-id-number] command assigns the interface the proper VLAN number Incorrect Answers: A, D: Can't these commands in this way B: There is no set mls vlan command QUESTION 163 You are setting up a large flat network for Contoso inc In particular you are configuring a Cisco 5000 Catalyst switch However, there are too much broadcasts on the network and the network traffic is too high You decide to create VLANs to reduce the broadcasts Which hardware will enable you to configure inter-VLAN communication in this scenario? A MLS B RSM C MSFC D VLAN bandwidth Answer: B Explanation: You can view a Route Switch Module (RSM) as an external router that has several interfaces directly connected into the different VLANs of a Catalyst 5000 switch Reference: Troubleshooting InterVLAN Routing on a Catalyst 5000 Switch with RSM http://www.cisco.com/warp/public/473/56.html Incorrect Answers A: Multilayer Switching (MLS) C: Multilayer Switch Feature Card (MSFC) is a Route Processor (RP) D: Does not apply QUESTION 164 How does the IGMPv1 protocol determine which client on a subnet should respond to a host membership query? 191 http://www fravo.com 642-891 A The clients use a countdown timer B If the query is broadcast, then all clients respond C The client with the lowest MAC address responds D The client uses a designated querier election process Answer: D Explanation: For IGMP Version 1, the designated router is elected according to the multicast routing protocol that runs on the LAN Note: For IGMP Version 2, the designated querier is the lowest IP-addressed multicast router on the subnet QUESTION 165 Exhibit: show port 3/1 You use the command shown in the exhibit The output includes a Giant column which has a value that is greater than You know that the normal value is What could have caused this non-zero value? A IEEE 802.1Q B IEEE 802.10 C misconfigured NIC D User configuration Answer: A Explanation: The Ether Type field identifying the 802.1q frame is inserted into an 802.3 Ethernet frame Inserting a tag into a frame that already has the maximum Ethernet size creates a 1522 byte frame that can be considered as a "baby giant" by the receiving equipment This would cause the output of the show port command to include a non-zero Giants value Note: The show port command is used to display port status and counters Giants denote the number of received giant frames (frames that exceed the maximum IEEE 802.3 frame size) on the port Reference: Trunking Between Catalyst 4000, 5000, and 6000 Family Switches Using 802.1q Encapsulation http://www.cisco.com/warp/public/473/27.html QUESTION 166 You are planning an installation of Gigabit Ethernet Which sort of cabling could be used? (Select two.) A Cat-3 UTP B Cat-5 UTP C RG-58 coax D 50 micron MMF E 62.5 micron SMF Answer: B, D Explanation: B: 1000BaseT use category UTP D: 1000BaseSX use 62.5 and 50-micron MMF QUESTION 167 Which statement is true about the characteristic of static VLAN members? A VLAN membership is managed manually by the network administrator B The switch can forward their packets to other VLANs using the VTP protocol C VLAN membership is managed through a database that maps MAC addresses to specific VLANs D The ports can be automatically changed to another VLAN, based on a device MAC address in a VLAN database 192 http://www fravo.com 642-891 Answer: A Explanation: Static port VLAN membership on the switch is assigned manually by the administrator on a port-by-port basis Reference: Understanding and Configuring VLAN Trunk Protocol (VTP) http://www.cisco.com/warp/public/473/21.html Incorrect Answers B: Virtual Local Area Network (VLAN) Trunk Protocol (VTP) reduces administration in a switched network When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain However, VTP is not used for static VLAN members C, D: The VLAN database implements dynamic addressing of VLANs QUESTION 168 You want to configure your switch with the Uplink Fast feature What should you take into consideration? (Select two.) A It must be used with the Port Fast feature enabled B When enabled, it is enabled for the entire switch and all VLANs C It should be configured on all switches, including the root bridge D When the primary Root Port uplink fails, another blocked uplink can be immediately brought up for use Answer: B, D Explanation: B: All VLANs on the switch are affected and you cannot configure Uplink Fast on individual VLANs D: When a link fault occurs on the primary root link, Uplink Fast transitions the blocked port to a forwarding state Uplink Fast changes the port without passing through the listening and learning phases, QUESTION 169 console Contoso (enable) show vtp domain Domain Name Domain Index Vtp Version Local Mode Password server - 1023 disabled Last Updater V2 Mode pruning Prune Eligible on Vlans 0.0.0.0 disabled 2-1000 Console Contoso (enable) You plan configure VLANs on your Catalyst 6000 switch You issue the command shown in the exhibit above You want to be able to create new VLANs and to be able to modify and delete existing VLANs What you need to do, if anything, on this switch before you are able to work with your VLANs as you have planned? A You enable VTP B You configure a VTP domain name C You change the VTP mode to transparent D You nothing, the switch is already a VTP server Answer: B Explanation: The VTP domain name is not configured Incorrect Answers A: VTP is already enable The Vlan-count is C: Server mode is already configured Server mode is the appropriate mode in this scenario D: We should configure the domain name QUESTION 170 Bob asks what can be said about the Span Tree Port Fast feature What should you tell him? (Select three) A Increase throughput for the port B It is configured on per port basis C It is Cisco Specified Implementation D It improve Span tree Convergence Time E It can be used to stop a switch from sending on BPDUs that waste bandwidth 193 http://www fravo.com 642-891 Answer: B, C, and D Explanation: B: Port fast is configured on per port basis C: Port Fast is a Cisco propriety implementation D: Port Fast increase Span tree Convergence Time Note: When enabling Port fast on a Catalyst switch, the Spanning Tree Protocol is essentially bypassed and the port goes into forwarding mode immediately When connecting a device to a port, this port will go through the STP phases of listening, learning and forwarding Port fast can only be used with end-stations such as PC, workstations, etc Connecting a hub or other switch can cause loops, since the Spanning Tree algorithm is not enabled on this port Reference: Using Port fast and Other Commands to Fix Workstation Startup Connectivity Delays, http://www.cisco.com/warp/public/473/12.html Incorrect Answers A: Throughput is not affected E: It cannot be used to stop a switch from sending BPDUs QUESTION 171 Your Contoso trainee Robert is configuring an ether channel bundle on a new catalyst 2900XL switch Which command should Robert use to enable the bundle? A port group B set group channel on C set port channel D set bundle on Answer: A Explanation: The port group command is used to enable an ether channel bundle on a Catalyst 2900XL switch Incorrect Answers B, D: These command does not exists C: The set port channel command is not used on a Catalyst 2900XL switch It used on other switches, such as Cisco 5000 series however QUESTION 172 You tell your Contoso Trainee Jack that there is Cisco switching technology that controls multicast traffic so that it is delivered only to the switch ports that have multicast client What technology are you talking about? A PIM B VTP C IGMP D CGMP Answer: A Explanation: PIM (Protocol-Independent Multicast) handles the transmission of multicast packets to all hosts in the multicast group while preventing loops and wasted bandwidth Incorrect Answers B: VTP is VLAN Trunking Protocol It shares VLAN information between switches It is not used for multicast C: Routers use the Internet Group Management Protocol (IGMP) to learn whether members of a group are present on directly attached subnets, and whether or not to forward multicast packets onto those networks Hosts join multicast groups by sending IGMP report messages D: Cisco Group Management Protocol (CGMP) is a Cisco Proprietary protocol which enables IP multicasting at layer on Cisco's Catalyst switches that not distinguish between IP multicast data packets and IGMP Report messages, which are both MAC level addressed to the same group address CGMP performs same tasks as IGMP, and was designed to work with other layer multicast protocols QUESTION 173 You are configuring MLS (multi158 You are configuring MLS (multilayer 194 http://www fravo.com 642-891 switching) on your Cisco switch What action could disable MLS? A enabling ip security B clearing the mls cache C configuring an output access list D disabling TCP header compression Answer: A Explanation: There are several configuration options on the router which are not compatible with MLS These include IP accounting, encryption, compression, IP security, Network Address Translation (NAT), and Committed Access Rate (CAR) Reference: Troubleshooting IP Multilayer Switching http://www.cisco.com/warp/public/473/13.html QUESTION 174 You have configured an Ether channel bundle on your Cisco 5000 Catalyst How fast will traffic be rerouted, to a new link, if one of the links in the bundle fails? A one minute B a few seconds C a few milliseconds D not until appropriate commands are entered Answer: C Explanation: If a link is lost in an Ether Channel network, traffic is rerouted to one of the other links in just a few milliseconds, 195 http://www fravo.com ... your exam We guarantee it! GOOD LUCK! DISCLAIMER This study guide and/or material is not sponsored by, endorsed by or affiliated with Microsoft, Cisco, Oracle, Citrix, CIW, CheckPoint, Novell, Sun/ Solaris,. .. private, locally administered address? A 39.0f01.00 02.00 00.0c00.1111.00 B 48.0f01.00 02.00 00.0c00.1111.00 C 49.0004.30ac.0000.3090.c7df.00 D 52.0f01.00 02.00 00.0c00.1111.00 Answer: A Explanation: AESA... octet: 47.040C.0061.040C.0056.0D 12.00 SystemID is next six octet: 47.040C.0061.040C.0056.0D 12.00 The AreaID is the remaining leftmost octets: 47.040C.0061.040C.0056.0D 12.00 Note: There are several