Deck 2: Networking and Congestion Control

Question 1

The hosts which are basically stationary hosts who move from one fixed site to another from time to time but use the network only when they are physically connected to it are called …………….

A)migratory hosts
B)stationary hosts
C)mobile hosts

Answer 1

migratory hosts

Question 2

The hosts who compute on the run and want to maintain their connections as they move around ……………

A)migratory hosts
B)stationary hosts
C)mobile hosts

Answer 2

mobile hosts

Question 3

What is the type of network in which the routers themselves are mobile?

A)wide area network
B)mobile ad hoc network
C)mobile network

Answer 3

mobile ad hoc network

Question 4

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

Question 5

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

A)concept of a feedback loop
B)concept of a forward loop
C)concept of current state of network

Question 6

..………..is used to validate the identity of the message sender to the recipient

A)encryption
B)decryption
C)digital certificate

Question 7

When too many packets are present in the subnet, and performance degrades then it leads to ………………..

A)ingestion
B)congestion
C)digestion

Question 8

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

Question 9

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

Question 10

In …………… case higher bandwidth can be achieved.

A)connectionless networks
B)connection oriented networks
C)virtual circuit networks

Question 11

In transport layer, End to End delivery is the movement of data from ……………….

A)one station to the next station
B)one network to the other network
C)source to destination

Question 12

The service of closed loop congestion control technique is ………………

A)when to accept new traffic
B)when to discard the packets
C)monitor the system to detect when and where congestion occurs

Question 13

The solution to increase the capacity when congestion occurs is …………………

A)denying service to the users
B)degrading the service to the users
C)splitting traffic over multiple routes

Question 14

When the source host receives the choke packet, then the source ………………

A)reduces the capacity of the line
B)reduces the line utilization factor
C)reduces the traffic generation

Question 15

If the buffer fills and a packet segment is dropped, then dropping all the rest of the segments from that packet, since they will be useless anyway is called ………………..

A)priority dropping
B)tail dropping
C)age based dropping

Question 16

Flow control policy is implemented in ………………….

A)network layer
B)transport layer
C)application layer

Question 17

For applications such as audio and video streaming, the variation in the packet arrival times is called ……………..

A)random early detection
B)jitter
C)delay difference

Question 18

The first collision free protocol is ……………….

A)binary countdown
B)basic bitmap
C)reservation protocol

Question 19

Sending of a IP packet from host 1 to host 2 where both are of same LAN but the packet is transferred through different intermediate LANs is called ………………

A)tunnelling
B)routing
C)diverting

Question 20

FDDI is an acronym for ……………

A)fast data delivery interface
B)fiber distributed data interface
C)fiber distributed digital interface

Question 21

The address field of a frame in HDLC protocol contains the address of the ……………… station.

A)primary
B)secondary
C)tertiary

Question 22

In ………………. transmission, the channel capacity is shared by both communicating devices at all times.

A)simplex
B)half-duplex
C)full-duplex

Question 23

Source routing bridges in the same LANs must have …………… bridge Number.

A)same
B)different
C)source

Question 24

A repeater takes a weakened or corrupted signal and …………… it.

A)amplifies
B)regenerates
C)resample

Question 25

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

A)packet-switched
B)circuit-switched
C)message-switched