CompTIA Network+ Certification Study Guide part 9 pptx

... used for  10Base2 networks. RG-58 C/U, which is a military implementation of RG-58 A/U. RG- 59, which is used for broadband transmissions (such as cable  television), and is used for 10Base5 ... networks. RG-6, which is used for broadband, but supports higher transmis- sion rates than RG- 59. RG-62, which is used for Arcnet. RG-8, which is 10Base5 cable. NOTES FROM THE FIELD… Sec...

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 ... words, when a computer is FIGURE 1.3 A Bus Topology. Exam Warning One of the testable items on the Network+ exam is being able to identify a topology based on either the description...

Ngày tải lên: 04/07/2014, 13:20

... Fiber-optic 10 Gbps 10GbaseLX4 Fiber-optic 10 Gbps 10GbaseLR Fiber-optic 10 Gbps Media Issues 49 ST, are plugged into a port, whereas others such as BNC and ST connectors have threading that ... 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...

Ngày tải lên: 04/07/2014, 13:20

... Network Devices 1 29 must be configured to pass through the proxy to use it. Proxy servers are also used to mask the ... internal segments of the organization’s network (often called the protected network). Figure 3 .9 shows a common installa- tion using this layered approach. As shown in Figure 3.10, the second ... is protected by a firewall from both the external network and the systems...

Ngày tải lên: 04/07/2014, 13:21

... 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 wired ... (DDoS) attacks, or they can be specific to wireless networks Common Exploits of Wireless Networks 2 09 many authentication requests, each of which includes the original plaintext message and the...

Ngày tải lên: 04/07/2014, 13:21

... which allows viewing a Note BOOTP is described in RFC 95 1 and RFC 1084 and is used for booting diskless nodes. Updated in RFC 1 395 and RFC 1 497 and superseded by DHCP, BOOTP is still supported ... source addresses for any traffic. Although multicast addresses can be associated with particular interfaces on particular devices (such as 224.0.0.5 for Open Shortest Path First- enabled P...

Ngày tải lên: 04/07/2014, 13:21

... locations.” http://www.boarding.no/art.asp?id=36 195 NEWS ARTICLE: CZECH AIRLINES SELECTS SITA AS SINGLE NETWORK SUPPLIER ON 4/26/ 09 Network Monitoring 497 During off hours, people need to know that problems are to go through a particular ... married name on a system, or someone being unable to find a particular Web page on the corporate intranet). Network Monitoring 499 Dropped packe...

Ngày tải lên: 04/07/2014, 13:21

... connectivity problem between Computer A, with an IP address of 192 .168.1.1 and subnet mask of 255.255.255.0, and Computer B with an IP address of 192 .168.2.5 and a subnet mask of 255.255.255.0 – this ... 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...

Ngày tải lên: 04/07/2014, 13:21

... Computer9 that you now need to add to Subnet C. Which of the following would be a valid IP address that would allow Computer9 to access resources on all four subnets? A. 192 .168.3.155 B. 192 .168.3.1 C. ... network B. The 192 .168.1.1 interface on Router A C. The 192 .168.4.1 interface on Router B D. The 192 .168.5.1 interface on Router A FIGurE 12.14 Sample network architecture. Sel...

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 ... similar manner, there is addi- tional cabling to connect every one of them to each other. FIGURE 1 .9 657 NETWORK+ EXAM N10-004 Self Test Appendix CHAPTER 1: NETWORK FUNDAMENTALS Y...

Ngày tải lên: 04/07/2014, 13:21