Steps:

1. Below you will be given some questions, which you should answer in your admin log. You and your lab partner(s) may help one another work out the answers, BUT:

   • This must be mutual. If there is a clear divide, where someone is merely copying answers from another, that is bad.
   • For one, you miss out on a learning opportunity.
   • More importantly, that will qualify as academic dishonesty!
   • Moreover, you should also record your answers, individually.
2. As your team completes these questions, have me check your answer to one question before moving on to the next.
3. This can be good practice for the associated homework assignment, or vice versa.

4. Questions:

   1. C1 IP/network address: 192.168.12.27
      Subnet mask: 255.255.255.240
      

      C1 pings C2, whose IP/network address is: 192.168.12.53

      Are the source and destination IPs within the same subnet? Please explain why or why not.

   2. Destination address: 192.168.12.213
      Subnet mask: 255.255.255.192
      

      Please calculate the subnet to which the destination network address belongs.

   3. Subnet mask: 255.255.255.0
      

      For each network address below, please calculate the subnet:
      

      a)  10. 43. 75. 83: ____.____.____.____
      b)  10. 98.  2.231: ____.____.____.____
      c) 192.168.147. 18: ____.____.____.____

   4. Network Address: 201.37.190.0 (Assume Class 3)
      Subnets: 4
      • For each subnet (1st-4th), please indicate:
        • The network address
        • The broadcast address
      • What is the subnet mask?
      • How many hosts per subnet?
   5. Network Address: 237.93.171.0 (Assume Class 3)
      Subnets: 8
      • For each subnet (1st-8th), please indicate:
        • The network address
        • The broadcast address
      • What is the subnet mask?
      • How many hosts per subnet?
   6. For each value of X, 3 through 6, where X is the number of mask bits...
      • What is the subnet mask?
      • How many subnets are possible?
      • How many hosts per subnet?

      Example (corrected from previous typo):

      X = 2
      
      Subnet Mask: 255.255.255.192
      Subnets: 4
      Hosts per Subnet: 62
   7. For each of the following pairs A-L -- where each pair consists of a network address and a CIDR notation -- please indicate the address class, subnet mask, number of subnets, and number of hosts per subnet. Consult the example given below the table.

      	Address	CIDR			Address	CIDR
      A	141. 71.  0.  0	/19		G	64.  0.  0.  0	/11
      B	152.164.  0.  0	/27		H	167.182.  0.  0	/21
      C	15.  0.  0.  0	/14		I	196.124. 73.  0	/28
      D	236.125.175.  0	/29		J	99.  0.  0.  0	/20
      E	103.  0.  0.  0	/13		K	231.217. 44.  0	/26
      F	254. 79.103.  0	/27		L	183.176.  0.  0	/23

      Example:

      IP: 128.123.0.0
      CIDR: 30
      Class: B
      Subnet Mask: 255.255.255.252
      Subnets: 16384
      Hosts per Subnet: 2

   8. Network Address: 192.168.11.0
      Subnet Mask: 255.255.240.0
      

      How would you express this information in CIDR notation?

   9. Consider the following block of subnets, expressed in CIDR:

      192.168.208.0/21
      192.168.209.0/21
      192.168.210.0/21
      192.168.211.0/21

      Is this subnet group problematic in any way? Please explain why or why not.

In your Admin. Log, complete the entry for this lab, which should include the following questions, along with your answers:

1. How did this lab go, and how long did it take?
2. Which parts went the most smoothly, and why?
3. Which parts of the lab were hardest to carry out, and why? How did you deal with it?