CompTIA Network+ Certification Study Guide part 7 pptx

... more expensive than UTP. DAMAGE AND DEFENSE… Physical Security Physical security is an important part of any network. In terms of cabling, you should try to keep as much cabling as possible out ... can send a thousand times this amount. As we’ll see later in this chapter, the features of a particular type of cable can vary greatly. Because different types of cabling are available to use...

Ngày tải lên: 04/07/2014, 13:20

... companies expand and spread into different locations, it became difficult to have people in the same departments on the same LAN segments. Someone envisioned being able to reconfigure one physical device ... them: Bus Star Ring Mesh Point-to-point Point-to-multipoint Hybrid Wireless Logical Networking Topologies 17 accessed to store data and access necessary resources. These...

Ngày tải lên: 04/07/2014, 13:20

... CHAPTER 2: Network Media 74 10BaseT and Beyond In addition to the standards that use coaxial cable, there are also those ... types of media. Questions may appear that specifically require this knowledge. Media Standards 73 workstation on an Arcnet network receives a token, it has the opportunity to communicate on ... your cables. You should also test the run and any other cables you are...

Ngày tải lên: 04/07/2014, 13:20

... at that level. In addition, clients FIGURE 3.8 A Screened Subnet Firewall. Network Devices 1 27 Dual-Homed Host Firewalls A dual-homed firewall consists of a single computer with two physical ... packets travel into the internal network, they only know of the computer host that exists. Figure 3 .7 shows an illustration of a screened-host configuration. Screened Subnet Firewalls A screened...

Ngày tải lên: 04/07/2014, 13:21

... Jamming attacks are sometimes used as the prelude to further Common Exploits of Wireless Networks 2 07 Active Attacks on Wireless Networks Once an attacker has gained sufficient information from the ... large number of active attacks that a hacker can launch against a wireless network. For the most part, these attacks are identical to the kinds of active attacks that are encountered on wi...

Ngày tải lên: 04/07/2014, 13:21

... addresses can be associated with particular interfaces on particular devices (such as 224.0.0.5 for Open Shortest Path First- enabled Private Network Addresses 3 27 sites that are connected only ... IGMP allows host computers on the Internet to participate in IP multicasting. A multicast address identifies a transmission session instead of a particular physical destination. This allows fo...

Ngày tải lên: 04/07/2014, 13:21

... AS SINGLE NETWORK SUPPLIER ON 4/26/09 Network Monitoring 4 97 During off hours, people need to know that problems are to go through a particular person or group of people who have a list of people ... their maiden name changed to their married name on a system, or someone being unable to find a particular Web page on the corporate intranet). Network Monitoring 499 Dropped packets – Router...

Ngày tải lên: 04/07/2014, 13:21

... be related to the computer itself. If it is affecting all computers on a particular subnet or those connected to a particular hub or switch, you can use this information to help you in the ... configuration for a particular network interface card (NIC). You’ll use the information you gather to determine which component of your network has failed or is misconfigured. Self Test 5 17 FIGURE...

Ngày tải lên: 04/07/2014, 13:21

... Gateway: 172 .16.0.1 C. DNS Servers: 172 .16.0.100 D. 172 .16.0.101 As part of a recent network redesign, you had to change the default gate- way used by your clients to a different IP address: 172 .16.1.1. ... network C. The NIC installed in Router A attached to Subnet B D. The TCP/IP configuration of Computer7 FIGurE 12.11 Sample network architecture. Self Test 633 FIGurE 12.12 Sample...

Ngày tải lên: 04/07/2014, 13:21

... also wrong because Office B isn’t part of a WAN. Answer B is incorrect because although it has a LAN, it isn’t connected to the other networks and therefore isn’t part of the WAN. Answer D is incorrect ... manner, there is addi- tional cabling to connect every one of them to each other. FIGURE 1.9 6 57 NETWORK+ EXAM N10-004 Self Test Appendix CHAPTER 1: NETWORK FUNDAMENTALS You are c...

Ngày tải lên: 04/07/2014, 13:21