Deck 10: TCP and Application Layer Protocols

Question 1

Which of the following is false with respect to TCP?

A)connection-oriented
B)process-to-process
C)transport layer protocol
D)unreliable

Answer 1

unreliable

Question 2

TCP groups a number of bytes together into a packet called                

A)packet
B)buffer
C)segment
D)stack

Answer 2

segment

Question 3

The value of acknowledgement field in a segment defines                

A)sequence number of the byte received previously
B)total number of bytes to receive
C)sequence number of the next byte to be received
D)sequence of zeros and ones

Answer 3

sequence number of the next byte to be received

Question 4

Two broad categories of congestion control are

A)open-loop and closed-loop
B)open-control and closed-control
C)active control and passive control
D)active loop and passive loop

Question 5

Retransmission of packets must not be done when                

A)packet is lost
B)packet is corrupted
C)packet is needed
D)packet is error-free

Question 6

In Go-Back-N window, when the timer of the packet times out, several packets have to be resent even some may have arrived safe. Whereas in Selective Repeat window, the sender resends                        

A)packet which are not lost
B)only those packets which are lost or corrupted
C)packet from starting
D)all the packets

Question 7

Closed-Loop control mechanisms try to

A)remove after congestion occurs
B)remove after sometime
C)prevent before congestion occurs
D)prevent before sending packets

Question 8

The technique in which a congested node stops receiving data from the immediate upstream node or nodes is called as                

A)admission policy
B)backpressure
C)forward signaling
D)backward signaling

Question 9

The packet sent by a node to the source to inform it of congestion is called                

A)explicit
B)discard
C)choke
D)backpressure

Question 10

In the slow-start algorithm, the size of the congestion window increases------------ until it reaches a threshold.

A)exponentially
B)additively
C)multiplicatively
D)suddenly

Question 11

The packet of information at the application layer is called                      

A)packet
B)message
C)segment
D)frame

Question 12

Which one of the following is an architecture paradigms?

A)peer to peer
B)client-server
C)http
D)both peer-to-peer & client-server

Question 13

Application layer offers --------------  service.

A)end to end
B)process to process
C)both end to end and process to process
D)none of the mentioned

Question 14

E-mail is                    

A)loss-tolerant application
B)bandwidth-sensitive application
C)elastic application
D)none of the mentioned

Question 15

Pick the odd one out.

A)file transfer
B)file download
C)e-mail
D)interactive games

Question 16

Which of the following is an application layer service?

A)network virtual terminal
B)file transfer, access, and management
C)mail service
D)all of the mentioned

Question 17

Which is a time-sensitive service?

A)file transfer
B)file download
C)e-mail
D)internet telephony

Question 18

Transport services available to applications in one or another form

A)reliable data transfer
B)timing
C)security
D)all of the mentioned

Question 19

Electronic mail uses which Application layer protocol?

A)smtp
B)http
C)ftp
D)sip

Question 20

RMI stands for?

A)remote mail invocation
B)remote message invocation
C)remaining method invocation
D)remote method invocation