1 In Figure 126 page 30 of the textbook when Host A transmit

1. In Figure 1-26 (page 30 of the textbook), when Host A transmits a packet along the data link shown,

a) How many physical links are there along the data link shown? There are three physical links that are long the data link.

b) How many data links?

2. In Figure 1-26 (page 30 of the textbook):

a) How many physical links, data links, and routes are there along the way when Host A sends a packet to Host D?

b) When Host E sends to Host A? (Assume that hops will be minimized across switches and routers.)

c) When Host D sends to Host B?

3. In Figure 1-26 (page 30 of the textbook):

a) What type of single network is Network Y?

b) What type of single Network is Network X?

c) What type of protocol does Network Y follow at the data link layer?

4. In a network, there are 10 routers between Host Q and Host Y.

a) How many data links will there be along the way when Host Q transmits a packet to Host Y? (Hint: Draw a picture.)

b) How many routes?

c) How many frames?

Solution

1)

a. 5 physical links.

b. 1 data link

2)

a. 7 physical links

    3 data links

    1 route

b. 8 physical links

    3 data links

     1 route

c. 3 physical links

   1 data link

    1 route

4.

a. 10 data links

b. 1 Route

c. 1 frame