1. To do multicast routing, each router computes a …………

 (A) Binary tree
(B) AVL tree
(C) Spanning tree
(D) None of these



2. In the OSI model, as a data packet moves from the lower to the upper layers, headers are ............

(A) Added
(B) Removed
(C) Rearranged
(D) None of the mentioned


3. Which transmission media has the highest transmission speed in a network?

(A) coaxial cable
(B) twisted pair cable
(C) optical fiber
(D) electrical cable



4. The PSTN is an example of a ………………… network.

(A) packet switched
(B) circuit switched
(C) message switched
(D) None of these



5. Which one of the following computer network is built on the top of another network?

(A) prior network
(B) chief network
(C) prime network
(D) overlay network



6. Which of this is not a network edge device?

(A) PC
(B) Smartphones
(C) Servers
(D) Switch



7. Each packet is routed independently in ……………….

(A) virtual circuit subnet
(B) short circuit subnet
(C) datagram subnet
(D) ATM subnet



8. Layer one of the OSI model is

(A) physical layer
(B) link layer
(C) transport layer
(D) network layer



9. Commercial networks providing access to the ................... to subscribers, and networks owned by commercial organizations for internal use that also have connections to the internet. 

(A) backbones
(B) Network access points(NAPs)
(C) Internet Exchange Points(IXPs)
(D) All of the above



10. Which one of the following is a transport layer protocol?

(A) stream control transmission protocol
(B) internet control message protocol
(C) neighbor discovery protocol
(D) dynamic host configuration protocol