Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

A)  primary
B)  secondary
C)  tertiary B

Question 3

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 …………….

Accepted Answer

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

Question 4

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

Accepted Answer

A)  same
B)  different
C)  source

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

A)  ingestion
B)  congestion
C)  digestion

Question 7

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

Accepted Answer

A)  encryption
B)  decryption
C)  digital certificate

Question 8

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

Accepted Answer

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

Question 9

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 ………………

Accepted Answer

A)  tunnelling
B)  routing
C)  diverting

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

What is it goal of congestion control?

Accepted Answer

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 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

A)  amplifies
B)  regenerates
C)  resample

Question 16

FDDI is an acronym for ……………

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

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 19

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 ………………..

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 2: Networking and Congestion Control