CompTIA Network+ Certification Study Guide part 55 doc

... and other more advanced tools that won’t necessarily appear on the Network+ exam, but can still be used to troubleshoot a particular problem. Utilizing the ping Command The ping command, which ... OF THE CLASS… Understanding ICMP The ICMP is documented in RFC 792, which you can read online at www.freesoft.org/CIE/RFC/ 792/index.htm. ICMP is part of the TCP/IP proto- col suite that ope...

Ngày tải lên: 04/07/2014, 13:21

... testers, 559 Ethernet crossover cable, 558 559 Linux tools, 563–564 dig command, 555 556 ifconfig command, 553 555 traceroute command, 557 netware tools, 557 558 , 564 oscilloscope, 559 OSI model, ... interface, 554 configuration information for, 555 Ethernet, 11, 70, 263 802.3 networks, 184, 185 adapter, configuring, 555 cable, testers for, 560 crossover cable as troubleshoot...

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... more immune to interference the signal becomes. If part of the transmis- sion is corrupted, the data can still be recovered from the remaining part of Note One megahertz represents 1 million cycles ... the MAC layer is particularly noteworthy and has significant consequences for the security of wireless net- works. This means that data at the higher levels of the OSI model, particu- lar...

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... most effective techniques in attacking a wireless network, whether it’s to map the network as part of a target reconnaissance, to grab passwords, or to capture unencrypted data. Sniffing is ... the SSID, the channel, and the manufacturer of the wireless AP. There are a few things that are particularly noteworthy about this session. The first is that a couple of APs are still configured

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... Number of Networks Class A 1 1.x.y.z 126.x.y.z 126 Class B 2 128.0.y.z* 191. 255. y.z 16,384 Class C 3 192.0.0.z 223. 255. 255. z 2,097152 * Remember that a valid network address cannot begin with 127.0.0.0, ... Octets Used First Host ID Last Host ID Number of Hosts Class A 3 w.0.0.1 w. 255. 255. 254 16,777,214 Class B 2 w.x.0.1 w.x. 255. 254 65,534 Class C 1 w.x.y.1 w.x.y.254 254 Test Day Ti...

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... address. The network ID is the IP address of the destination host and the net- work mask is 255. 255. 255. 255.  Default Route The default route is used when a more specific net- work ID or route cannot ... included (as you’ll recall, the physical or HEAD OF THE CLASS… Network+ Exam is Focused on TCP/IP … Period. For those of you taking the Network+ exam, you will need to know TCP/IP...

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... The object has the following attributes: cn: 4321 givenName: John sn: Doe telephoneNumber: 905 555 1212 employeeID: 4321 mail:jdoe@nonexist.com objectClass: organizationalPerson Based on this ... various authentication methods. One of the methods being described uses a time-stamped ticket as part of its methodology. Which authentication method would match this description? A. Certifica...

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... policy, procedures, configurations, and using regulations are all a part of configuration management documentation. What should I document? Well, many network managers and engineers have varying ... resulting from a change. In such cases, the change documentation can be used as a reference for backtracking the steps taken. The procedures you document are a valuable resource when you are...

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... addr:192.168.99.35 Bcast:192.168.99. 255 Mask: 255. 255. 255. 0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:190312 errors:0 dropped:0 overruns:0 frame:0 TX packets:86 955 errors:0 dropped:0 overruns:0 ... Link encap:Ethernet HWaddr 00:80:C8:F8:4A:51 inet addr:192.168.99.35 Bcast:192.168.99. 255 Mask: 255. 255. 255. 0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 R...

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... No IP Address. . . . . . . . . . . . : 192.168.1.12 Subnet Mask . . . . . . . . . . . : 255. 255. 255. 0 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.250 ... This chapter will help you to put together all of the concepts you’ve learned throughout this study guide, to help you use them in troubleshooting real-world issues that you migh...

Ngày tải lên: 04/07/2014, 13:21