Tài liệu CCNA Real Question& Answers doc

CCNA Real Questions & Answers Questions: 1. Which of the following correctly discribes the characteristics of switched and routed data flows ? A Switches create a single collision domain and a single broadcast domain, Routers provide seperate collision domains. B Switches create seperate collision domains and seperate broadcast domains, Routers provide seperate collision domains and seperate broadcast domain as well. C Switches create seperate collision domains and seperate broadcast domains, Routers provide seperate collision domains. D Switches create a single collision domain and seperate broadcast domains, Routers provide seperate broadcast domain as well. E Switches create seperate collision domains and a single broadcast domain, Routers provide seperate broadcast domain. 2. Which of the following are examples of the datalink layer (Choose 2) ? A SQL B MAC C IP D LLC E TCP 3. Which of the following is a true statement about the function of a bridge ? A A bridge creates or maintains a table of the available routes and their conditions. B A bridge passes packets outside of its network segment if the IP address cannot be found on its table. C A bridge sends the frame towards the destination host after it looks up the frame’s destination in its address table. D A bridge creates or maintains a table of the IP addresses of the hosts connected to it’s network segment. 4. Bio. Inc. has an enterprise server that is shared by all departments. The accounting departments each have their own fileserver. As network administrator, You need to ensure a secure seperation exists between the accounting and marketing departments. What should you do to accomplish this task ? A Install a hub B Install a switch C Install a router D Install a bridge 5. Switches are used to (Choose 2) ? A Decrease the number of collision domains B Reduce collisions C Decrease the number of broadcast domains D Increase collisions E Increase the number of collision domains 6. In the late 1970, the International Organization for Standardisation (ISO) created th OSI model Why ? A To provide users with faster acces speeds to network services B Defines a standard for how a pc works C To urge vendors to abandon proprietary standards D To create a standard programming language for all computers E So that different vendor networks could work with each other 7. Giving the following description of OSI layers, choose the correct order that these statements are listed in. I This layer segments and reassembles data into a data stream. II This layer manages device addressing, tracks the location of devices, and determines best path. III This layer provides the physical transmission of the data and handles error notification and flow control. A Network,Transport,Datalink B Datalink,Session,Transport C Transport,Network,Datalink D Session,Transport,Network E Datalink,Transport,Network 8. The ICMP (RFC 1700) is implemented by all TCP / IP hosts ? A True B False 9. The most commonly used dial-up and ISDN encapsulation are ? A PPP ; HDLC B UDP ; SDLC C PPP ; SLIP D TCP ; IP E IP ; IPX F IPX ; SPX G IP ; UDP 10. Identify the two procedures necessary to define and enable standard access lists to an interface (Choose 2) ? A Define the number of access lists supported on the interface B One-by-one copy the access list to the selected interfaces C Choose an interface to apply to the access list group D Define the access list number along with additional parameters E Assign th access list number to an access list group. F Define an access list group with both the access list number interface number as members. 11. Which of the following best describes the meaning of “ show access-list 101” ? A Verifies your 101th access list B Shows extended access list 101 C Verifies your access lists D Monitors IP access lists E Shows the access-list error message 101 12. What does the term “backoff” refer to on an Ethernet network ? A It is a node or software program that supplies services to a front-end. B It is a node or software program that supplies services to a back-end. C It is the length of time a device has to wait after an collision on an Ethernet network before trying to send another message. D It is a type of network protocol that allows nodes to centend for network access. E It is the part of the network that provides the primary path for traffic sent to and from other networks 13. What does the term “Base” means in 100BaseT ? A Speed type B Signaling type C Carrier type D Core type E Cabling type F Category type 14. FastEthernet compares to 10baseT Ethernet in which of the following ways (Choose 4) ? A FastEthernet is 100 times faster than 10BaseT Ethernet. B FastEthernet and 10BaseT Ethernet use the same MAC mechanisms. C FastEthernet and 10BaseT Ethernet use the same frame format. D Both FastEthernet and 10BaseT Ethernet uses the same MTU E FastEthernet is an extension of the IEEE 802.3 specification 15. Identify situations where the holddown timer would be reset (Choose 3) ? A The evolved time exceeds the maximum number. B Router exchanged have updated summaries at area borders. C The router receives a processing task proportiional to the number of links in the internetwork. D A router detects faulty LSP’s. E A router detects faulty packets. F The holddown timer expires. G An update is received indicating the original route to the network has been restored. H An update is received indicating an alternate route I A router detects routing table errors. 16. You are required to load a new version of the cisco IOS into one of the routers on your company’s corporate network. Which of the following command will accomplish this ? A copy tftp flash B copy flash ftp C copy ftp flash D copy flash tftp 17. You are configuring a router from setup mode. What does the [ ] signify ? A The recommeded setting for the parameter B The default value for the parameter C The selection of choices for the parameter D The variable’s label for the parameter E The overriding variable inserted by the cisco IOS for the parameter 18. You are configuring a Cisco router that is attached to your company’s corporate internetwork. Which of the following is responsible for storing the ARP cache, routing tables and packet buffers. A ROM B Mini-ROM C Flash Memory D DROM E NVRAM F RAM 19. Which of the following symbols in the router prompt indicates that you are in privileged mode ? A % B # C privileged D > E ^ 20. You are configuring an cisco switch. As you try try to enter a command, you keep getting the %incomplete error response. How can you get help on the command that you are trying to enter ? A Reenter the command followed by a questionmark to view keywords B Type “ Help” followed by the command to see command parameters C Use the up arrow to review the prompt before the error D Type “?” to display all the console commands E Type history to review the prompt before the error 21. How do you view all acces list applied on all interfaces (Choose 2) ? A show access list B show running config C show access list all D show access list interfaces all 22. What is sure about IPX rip (Choose 2) ? A it uses unequal multiple path B it uses ticks and hop counts as it metric C Routing table update sents at 60 sec interval by default D it does not support the split horizon algorithm 23. Can two different IPX encapsulation type be transmitted on a single dat link ? A True B False 24. What is the following term called : The process in which frames from one network system are placed inside the frames of another network system ? A Route Poisoning B Split Horizon C Tunneling D Flow Control 25. You have 8 workstations that are connected to a switch, each is connected to an 10 Mbps port. What will be the individual bandwith available to each ? A 80 B 10 C 16 D 5 26. What is the broadcast address in a 802.3/LAN A 0.0.0.0 B FF:FF:FF:FF:FF:FF C 255.255.255.255 D 00:00:00:00:00:00 27. How do you configure the line console password to “cisco” ? A Line console 0 Login Password Cisco B Line console 0 4 Login Password cisco C Line console Login Password cisco D Line console 0 Login Password cisco 28. You are required to backup your IOS to an network location. Which of the following command will accomplish this ? A copy tftp flash B copy flash ftp C copy ftp flash D copy flash tftp 29. Which command will show you the configuration of the system hardware, the best software version, the names and sources of configuration files and the best image ? A show memory B show config C show process D show version 30. By default which is IGRP metric (Choose 2)? A Hopcount B Delay C Loading D MTU E Bandwitdh F Reliability G Ticks 31. Which layer provides segmentation of data and reassembling at the other end ? A Session B transport C Datalink D Network 32. Which of the two Ethernet implementation have distances of 100 Meters ? A 10 base 2 B 10 Base T C 100 Base TX D 100 Base FX 33. Which cable would you use to connect a router to a switch ? A Crossover cable B Straight through cable 34. Compare 10BaseT and 100BaseTX (Choose 2) ? A Both have 100 meters distance B Ethernet specification C Star topology 35. What command will enable an encrypted password which cannot be seen in clear text in the running config ? A Enable password B Enable encrypted password C Service password encrypted D Enable secret password 36. What command will you give on the privileged mode to see the previous 10 commands in your buffer ? A show buffer B show memory C show previous command’ D show history 37. What command will enable a network on an interface ? A Ip network 10.1.2.0 B Network 10.1.0.0 C Network Interface 10.1.0.0 255.255.0.0 D Network 10.0.0.0 38. Enter the command to enable rip routing protocol on a router ? 39. What command will you enter to make a subinterface on serial 0 ? A 1 and 2 B 0.2 and 0.3 C 2.0 and 3.0 D 1/2 40. In subinterface mode, if you enter CRTL Z, which router mode will you return to? A user EXEC mode B Global config mode C Router mode D priviledged mode 41. You want a message to appear at an interface defining the job description of the network attached finance lan . How do you accomplish this ? A banner motd # B Message finance LAN C Description Finance LAN 42. You can config ppp on which of the following physical interfaces (Choose 2) ? A asynchronous serial B Ethernet C Fast Ethernet D Synchronous serial 43. Which command do you use to disable CDP on a given interface ? A (config)# no CDP run B (config-if)# noCDP disable C (config-if)# no CDP enable D (config)# disable CDP 44. To suspend a telnet session, what command do you enter ? A exit B Logout C disconnect D CTRL-SHIFT-DEL E CTRL-SHIFT-6 then X F CTRL-SHIFT-X then 6 45. What command check layer 3 connectivity ? A telnet B traceroute C ping 46. What does RARP do ? A It resolves IP to MAC addresses B It resolves MAC to IP addresses C It resolves IP to IPX addresses D It resolves an network address to DLCI 47. What command wil force the router to boot from ROM ? A Boot rom B Boot rxboot C Net boot rommon D Boot system rom 48. What statement is true regarding CDP ? A it is disabled by default B It brings information about remotely connected devices C CDP is independent by layer 3 adresses 49. Why are switches preferably used as compared to a bridge ? A Because switches increase broadcast domains B Bridges are ASIC based C Switches are faster then bridges 50. What is a root port ? A A root bridge B A port in listening state C It is the lowest cost path from the non-root bridge to the root bridge 51. What technology / mechanism is implemented to present loops in a bridged network ? A VTP B IEEE 802.IQ C Split Horizon D Poison reverse E STP 52. In frame switching, which operation mode checks the destination address as soon as the header is received and immediately begins forwarding the frame ? A Store and forward B Cut through C fragment free 53. Which frame-switching mode provides CRC ? A Cut through B Store and forward 54. Synchronizes VLAN configuration information with other switches. This is true for which switching modes (Choose 2) ? A Server Mode B Client Mode C Transparent mode D User mode 55. To reset the configuration revision number, what command do you use in privileged mode ? A Reset revision number B VTP number reset C No VTP D Delete VTP 56. How will you be certain that STP is working (VLAN 1) properly in your switched network when you use the syntax show spantree ? A Bridge indentifier has priority 32768 B Adress is 0050F037DA00 C Disignated port has priority 0 D VLAN 1 is executing the IEEE spanning tree protocol 57. What port is the port no of TFTP ? A 23 B 25 C 69 D 161 58. What statements are true for UDP (Choose 2)? A Connection oriented B It uses the transport layer C the receiver send an acknowledgement D Depends on upper layer protocol for reliability 59. What is a 3 way handshake ? A PAP B TCP 60. How many bits are by default in a subnet mask of a class B adress ? A 8 B 16 C 24 D 28 61. Ip adress 191.253.10.4. belongs to which ip address class ? A D B A C C D B 62. You are given an ip adress 132.15.136.2/18 what subnet is the host ip on ? A 132.15.136.0 B 132.15.128.0 C 132.15.192.0 63. In order to have 5 subnets and 17 hosts on each subet, how many bits subnetting will you do on the class B adress 162.13.0.0/16 ? A 255.255.128.0 B 255.255.224.0 C 255.255.240.0 D 255.255.248.0 64. How do you prevent routing loops in a routed network (Choose 2) A Split Horizon B Route poisoning C Switching 65. Which of the following is an IP link state protocol ? A RIP B IGRP C NLSP D OSPF E EIGRP 66. What is sure about RIP version 1 (Choose 2) ? A It uses composite metric B its administrative distance is 100 by default C it uses hop count as its metric D it is a classfull routing protocol 67. What command will display all ip routing protocol A show all protocol B display ip protocol [...]... 238.255.255.255 what is the protocol and type of adress ? A Mac and multicast B Ip and Multicast C Ip and broadcast D None of the above The Following questions are not complete but they are very usefull for the CCNA exam , I had several of them !! 77 What are the 3 basic switch functions ? 78 What are the 2 parts of an IPX adress ? 79 How can you establish inter-VLAN communication ? 80 What protocol is used in... that has employees outsourced at home, but they have large file that must been sent to their work What technology do they need ? 96 Name the main 3 advantages of ISDN ? 97 What is the defination of CIR ? ANSWERS 1 E 2 B,D 3 C 4 C 5 BE 6 E 7 C 8 A 9 A 10 CD 11 B 12 C 13 B 14 BCDE 15 CFG 16 A 17 B 18 F 19 B 20 A 21 AB 22 BC 23 A 24 C 25 B 26 B 27 D 28 D 29 D 30 BE 31 B 32 BC 33 B 34 AC - remember 100BaseTX . CCNA Real Questions & Answers Questions: 1. Which of the following correctly discribes. The Following questions are not complete but they are very usefull for the CCNA exam , I had several of them !! 77. What are the 3 basic switch functions