Top 250+ Solved Computer Architecture and Organization MCQ Questions Answer
Q. Which is the correct expression for the length of UDP datagram?
a. udp length = ip length – ip header’s length
b. udp length = udp length – udp header’s length
c. udp length = ip length + ip header’s length
d. udp length = udp length + udp header’s length
Q. The field is used to detect errors over the entire user datagram.
a. udp header
b. checksum
c. source port
d. destination port
Q. Which of the following is false with respect to TCP?
a. connection-oriented
b. process-to-process
c. transport layer protocol
d. unreliable
Q. In TCP, sending and receiving data is done as
a. stream of bytes
b. sequence of characters
c. lines of data
d. packets
Q. TCP groups a number of bytes together into a packet called
a. packet
b. buffer
c. segment
d. stack
Q. Bytes of data being transferred in each connection are numbered by TCP. These numbers start with a
a. fixed number
b. random sequence of 0’s and 1’s
c. one
d. sequence of zero’s and one’s
Q. 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
Q. 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
Q. 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
Q. 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
Q. 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
Q. 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
Q. The packet sent by a node to the source to inform it of congestion is called
a. explicit
b. discard
c. choke
d. backpressure