Computer Science 360
                                 Quiz  M             Name___________________

1. Suppose a prefix is 5 bits long. The "prefix mask" used in
   prefix based routing is:

   a. 00000111111111111111111111111111  b. 11111000000000000000000000000000

   c. 11111111111111111111111111100000  d. 11111111111111111111111111100000


2. Before comparing a destination address with the prefix it is necessary
   to

   a. OR it with the prefix mask        b. XOR it with the prefix mask

   c. AND it with the prefix mask       d. Any of the a, b, or c will work.


3. Suppose a prefix is 130.126/15  which of the following addresses match
   the prefix (Circle all that do)

   a. 130.125.0.1                       b. 130.126.0.1

   c. 130.127.0.1                       d. 130.128.0.1


4. Which of the following MUST be transmitted via link level broadcast?

   a. IP packet                         b. Arp request

   c. Arp reply                         d. both b. and c.


5. For efficiency in routing table look ups its a good idea to
   order the routing table from:

   a. longest prefix to shortest        b. shortest prefix to longest

   c. in increasing prefix value        d. randomly