MCQs on Computer Networking - 19

1. If a router sends every incoming packet out only on those lines that are going approximately in the right direction is known as ……………..

(A) Random flooding
(B) Static flooding
(C) Selective flooding
(D) Early flooding



2. The service of open loop congestion control technique is …………………..

(A) monitor the system to detect when and where congestion occurs
(B) when to accept new traffic
(C) pass the information to places where action can be taken
(D) adjusting the system to correct the problem



3. In Hierarchical routing for N router subnet, the optimal number of levels is …………..

(A) logN
(B) log(N -1)
(C) lnN
(D) ln(N-1)



4. Delimiting and synchronization of data exchange is provided by

(A) Application layer
(B) Session layer
(C) Transport layer
(D) Link layer



5. Physical layer provides

(A) mechanical specifications of electrical connectors and cables
(B) electrical specification of transmission line signal level
(C) specification for IR over optical fiber
(D) all of the mentioned



6. In open loop congestion control techniques, the decisions are based on the ……………

(A) without regard to the current state of the network
(B) with regard to the current state of the network
(C) with regard to the choice of the host
(D) without regard to the choice of the host



7. A _____ is a device that forwards packets between networks by processing the routing information included in the packet.

(A) bridge
(B) firewall
(C) router
(D) all of the mentioned



8. Communication between a computer and a keyboard involves ................. transmission

(A) Automatic
(B) Half-duplex
(C) Full-duplex
(D) Simplex



9. What is it goal of congestion control?

(A) making sure that subnet is not able to carry the offered traffic
(B) making sure that subnet will allow more than the offered packets
(C) making sure that subnet is able to carry the offered traffic
(D) making sure that subnet will not allow any traffic



10. The performance of data communications network depends on ..............

(A) Number of users
(B) The hardware and software
(C) The transmission
(D) All of the above


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