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5 Written questions

5 Matching questions

  1. What subnet and broadcast address is the IP address 172.16.66.10 255.255.192.0 (/18) a member of?
  2. Additional Cisco Troubleshooting
  3. Given 172.16.0.0/18, What are the valid hosts?
  4. What are the valid subnets?
  5. What is the subnet and broadcast address of the host 172.16.88.255/20?
  1. a .0.1 - .63.254, .64.1 - .127.254, .128.1 - .191.254, .192.1 - .255.254
  2. b The subnet is 172.16.64.0. The broadcast must be 172.16.127.255
  3. c the subnet is 80.0 and the broadcast address is 95.255
  4. d Tracert, Show ip arp
  5. e 256 - subnet mask = block size; start with 0 and add the block size until the mask value is reached

5 Multiple choice questions

  1. 2^x where x is the number of masked bits (or 1's)
  2. A /29 (255.255.255.248) has a block size of 8 in the fourth octet. This means the subnets are 0, 8, 16, 24, etc. 10 is in the 8 subnet. The next subnet is 16, so 15 is the broadcast address.
  3. A /29 (255.255.255.248), regardless of the class of address, has only three hosts bits. Six hosts is the maximum amount of hosts on this LAN, including the router interface.
  4. Facilitated spanning of large geographical distances
  5. You need 5 subnets, each with at least 16 hosts. The mask 255.255.255.240 provides 16 subnets with 14 hosts—this will not work. The mask 255.255.255.224 provides 8 subnets, each with 30 hosts. This is the best answer.

5 True/False questions

  1. You have a network with a subnet of 172.16.17.0/22. Which are valid host addresses?A Class B network ID with a /22 mask is 255.255.252.0, with a block size of 4 in the third octet. The network address in the question is in subnet 172.16.16.0 with a broadcast address of 172.16.19.255. Only option E even has the correct subnet mask listed, and 172.16.18.255 is a valid host.

          

  2. What are the valid hosts in each subnet?The numbers between the subnets and the broadcasts omitting the all 0s and all 1s

          

  3. Why subnet?Reduced network traffic

          

  4. 4 Troubleshooting StepsPing 127.0.0.1 (loopback), Ping the local host, Ping Default Gateway (router), Ping remote destination

          

  5. How many valid hosts per subnet?The numbers between the subnets and the broadcasts omitting the all 0s and all 1s

          

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