Process-to-Process Delivery: UDP, TCP, and SCTP MCQs

In this section of Data Communication and Networking – Process-to-Process Delivery: UDP, TCP, and SCTP MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topics.All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan.

This Section covers below lists of topics.

Average data rate, peak data rate, maximum burst size, and effective band-width MCQs.
Congestion control MCQs.
Open-loop congestion control MCQs.
Quality of service (QoS), Scheduling, traffic shaping, resource reservation, and admission control techniques MCQs.
Scheduling techniques ,FIFO queuing, priority queuing, and weighted fair queuing MCQs.
traffic shaping techniques ,Leaky bucket and token bucket MCQs
Resource Reservation Protocol (RSVP)- a signaling protocol MCQs
Differential Services – a class-based QoS model MCQs
Attributes to control traffic in Frame Relay,Access rate, committed burst size, committed information rate, and excess burst size MCQs

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. One of the responsibilities of the transport layer protocol is to create a ______ communication.

host-to-host
process-to-process
node-to-node
none of the above

2. UDP is called a ________________transport protocol.

connectionless, reliable
connection-oriented, unreliable
connectionless, unreliable
none of the above

3. UDP does not add anything to the services of IP except for providing _______ communication

node-to-node
process-to-process
host-to-host
none of the above

4. UDP is an acronym for _______

User Delivery Protocol
User Datagram Procedure
User Datagram Protocol
none of the above

5. Although there are several ways to achieve process-to-process communication, the most common is through the __________ paradigm

client-server
client-client
server-server
none of the above

6. The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________

UDP addresses
transport addresses
port addresses
none of the above

7. The ports ranging from 49,152 to 65,535 can be used as temporary or private port numbers. They are called the ________ ports

well-known
registered
dynamic
none of the above

8. In the sending computer, UDP receives a data unit from the _______ layer.

application
transport
IP
none of the above

9. In the sending computer, UDP sends a data unit to the _______ layer

application
transport
IP
none of the above

10. UDP and TCP are both _______ layer protocols

data link
network
transport
none of the above

11. Which of the following functions does UDP perform?

process-to-process communication
host-to-host communication
end-to-end reliable data delivery
none of the above

12. When the IP layer of a receiving host receives a datagram, _______

delivery is complete
a transport layer protocol takes over
a header is added
none of the above

13. UDP needs the _______ address to deliver the user datagram to the correct application process

port
application
internet
none of the above

14. A port address in UDP is _______bits long.

8
16
32
any of the above

15. Which of the following does UDP guarantee?

flow control
connection-oriented delivery
flow control
none of the above

16. The source port address on the UDP user datagram header defines _______

the sending computer
the receiving computer
the process running on the sending computer
none of the above

17. The combination of an IP address and a port number is called a ____________

transport address
network address
socket address
none of the above

18. To use the services of UDP, we need ________ socket addresses

four
two
three
none of the above

19. UDP packets are called __________

user datagrams
segments
frames
none of the above

20. UDP packets have a fixed-size header of _______ bytes

6
8
40
none of the above

21. UDP packets are encapsulated in ___________

an Ethernet frame
an TCP segment
an IP datagram
none of the above

22. UDP uses ________ to handle outgoing user datagrams from multiple processes on one host

flow control
multiplexing
demultiplexing
none of the above

23. UDP uses _______ to handle incoming user datagrams that go to different processes on the same host.

flow control
multiplexing
demultiplexing
none of the above

24. TCP is a __________protocol

stream-oriented
message-oriented
block-oriented
none of the above

25. TCP allows the sending process to deliver data as a _of bytes and allows the receiving process to obtain data as a ___ of bytes

message; message
stream; stream
block; block
none of the above

26. Because the sending and the receiving processes may not write or read data at the same speed, TCP ________

speeds up the slower process
slows down the faster process
uses buffers
none of the above

27. TCP groups a number of bytes together into a packet called a ___________

user datagram
segment
datagram
none of the above

28. TCP is a ___________ protocol.

connection-oriented
connectionless
both a and b
none of the above

29. TCP is a(n) _______ transport protocol

unreliable
best-effort delivery
reliable
none of the above

30. TCP uses _________________ to check the safe and sound arrival of data.

an acknowledgment mechanism
out-of-band signalling
the services of another protocol
none of the above

31. The bytes of data being transferred in each connection are numbered by TCP. The numbering starts with a __________________

0
1
randomly generated number
none of the above

32. TCP assigns a sequence number to each segment that is being sent. The sequence number for each segment is the number of the _______ byte carried in that segment.

first
last
middle
none of the above

33. Communication in TCP is ___________

simplex
half-duplex
full-duplex
none of the above

34. The value of the acknowledgment field in a segment defines the number of the ______byte a party expects to receive

first
last
next
none of the above

35. The acknowledgment number is ________

independent
randomly generated
cumulative
none of the above

36. The value of the window size is determined by _________

the sender
the receiver
both the sender and receiver
none of the above

37. The inclusion of the checksum in the TCP segment is ________

optional
mandatory
at the discretion of the application program
none of the above

38. A TCP segment is encapsulated in __________

an IP datagram
an Ethernet frame
a UDP user datagram
none of the above

39. Connection establishment in TCP is called __________ handshaking

two-way
four-way
one-way
none of the above

40. A SYN segment cannot carry data; it consumes _____ sequence number(s).

no
one
two
none of the above

41. A SYN + ACK segment cannot carry data; it consumes _____ sequence number(s).

no
three
two
none of the above

42. An ACK segment, if carrying no data, consumes ______ sequence number(s).

no
one
two
none of the above

43. The connection establishment procedure in TCP is susceptible to a serious security problem called the _________ attack.

ACK flooding
FIN flooding
SYN flooding
none of the above

44. The SYN flooding attack belongs to a group of security attacks known as a _____ attack

denial of service
replay
man-in-the middle
none of the above

45. The FIN segment consumes ____ sequence numbers if it does not carry data.

two
three
no
none of the above

46. The FIN + ACK segment consumes _____ sequence number(s) if it does not carry data

two
three
one
none of the above

47. In TCP, one end can stop sending data while still receiving data. This is called a ______.

half-close
half-open
one-way termination
none of the above

48. A(n) _________ machine is a machine that goes through a limited number of states.

infinite state
finite state
both a and b
none of the above

49. _____ control regulates the amount of data a source can send before receiving an acknowledgment from the destination.

Error
Flow
Congestion
none of the above

50. To accomplish flow control, TCP uses a ___________ window protocol

limited-size
sliding
fixed-size
none of the above

51. TCP sliding windows are __________ oriented

packet
segment
byte
none of the above

52. ACK segments consume _ sequence number(s) and _ acknowledged

no; are not
one; are not
no; are
none of the above

53. TCP delivers _______ out-of-order segments to the process

all
no
some
none of the above

54. IP is responsible for _ communication while TCP is responsible for _ communication

host-to-host; process-to-process
process-to-process; host-to-host
process-to-process; network-to-network
none of the above

55. If a segment carries data along with an acknowledgment, this is called _______

backpacking
piggybacking
piggypacking
none of the above

56. Multiply the header length field by _______ to find the total number of bytes in the TCP header

2
4
6
none of the above

57. Urgent data requires the urgent pointer field as well as the URG bit in the _______ field

control
offset
sequence number
none of the above

58. The options field of the TCP header ranges from 0 to _______ bytes.

10
20
40
none of the above

59. If the ACK value is 200, then byte _______ has been received successfully

199
200
201
none of the above

60. Stream Control Transmission Protocol (SCTP) is a new _____________protocol.

reliable, character-oriented
reliable, message-oriented
unreliable, message-oriented
none of the above

61. SCTP allows __________ service in each association

single stream
multistream
double stream
none of the above

62. SCTP association allows _____________ for each end

only one IP address
multiple IP addresses
only two IP address
none of the above

63. In SCTP, a data chunk is numbered using ________

a TSN
an SI
an SSN
none of the above

64. To distinguish between different streams, SCTP uses ___________

a TSN
an SI
an SSN
none of the above

65. To distinguish between different data chunks belonging to the same stream, SCTP uses ___________

TSNs
SIs
SSNs
none of the above

66. TCP has ; SCTP has

packets; segments
segments; packets
segments; frames
none of the above

67. The control information in SCTP is included in the ________

header control field
control chunks
data chunks
none of the above

68. An SCTP packet can carry __________

only one data chunk
several data chunks
no data chunks
none of the above

69. In SCTP, the acknowledgment number and window size are part of each ________

data chunk
control chunk
a or b
none of the above

70. There is no need for a header length field in SCTP because ________________

there are no options in the general header
the size of the header is fixed
both a and b
none of the above

71. The checksum in SCTP is ________ bits.

16
32
64
none of the above

72. The association identifier in SCTP is __________________

a unique verification tag
a combination of logical and port addresses
either a or b
none of the above

73. In SCTP, control information and data information are carried in _______ chunks.

the same chunk
different chunks
either a or b
none of the above

74. In SCTP, acknowledgment numbers are used to acknowledge _____________

both data chunks and control chunks
only control chunks
only data chunks
none of the above

75. In an SCTP packet, control chunks come ___________ data chunks

after
before
a or b
none of the above

76. In SCTP, ___________ can be carried in a packet that carries an INIT chunk

only data chunks
only control chunks
no other chunk
none of the above

77. A connection in SCTP is called an ____________

negotiation
association
transmission
none of the above

Data Communication and Networking – Process-to-Process Delivery: UDP, TCP, and SCTP MCQs