Computer Architecture And Organization Set 10

On This Page

This set of Computer Architecture and Organization Multiple Choice Questions & Answers (MCQs) focuses on Computer Architecture And Organization Set 10

Q1 | Beyond IP, UDP provides additional services such as                
  • routing and switching
  • sending and receiving of packets
  • multiplexing and demultiplexing
  • demultiplexing and error checking
Q2 | What is the main advantage of UDP?
  • more overload
  • reliable
  • low overhead
  • fast
Q3 | What is the header size of a UDP packet?
  • 8 bytes
  • 8 bits
  • 16 bytes
  • 124 bytes
Q4 | The port number is “ephemeral port number”, if the source host is                
  • ntp
  • echo
  • server
  • client
Q5 | “Total length” field in UDP packet header is the length of                    
  • only udp header
  • only data
  • only checksum
  • udp header plus data
Q6 | Which is the correct expression for the length of UDP datagram?
  • udp length = ip length – ip header’s length
  • udp length = udp length – udp header’s length
  • udp length = ip length + ip header’s length
  • udp length = udp length + udp header’s length
Q7 | The              field is used to detect errors over the entire user datagram.
  • udp header
  • checksum
  • source port
  • destination port
Q8 | Which of the following is false with respect to TCP?
  • connection-oriented
  • process-to-process
  • transport layer protocol
  • unreliable
Q9 | In TCP, sending and receiving data is done as                
  • stream of bytes
  • sequence of characters
  • lines of data
  • packets
Q10 | TCP groups a number of bytes together into a packet called                
  • packet
  • buffer
  • segment
  • stack
Q11 | Communication offered by TCP is
  • full-duplex
  • half-duplex
  • semi-duplex
  • byte by byte
Q12 | Suppose a TCP connection is transferring a file of 1000 bytes. The first byte is numbered 10001. What is the sequence number of the segment if all data is sent in only one segment?
  • 10000
  • 10001
  • 12001
  • 11001
Q13 | Bytes of data being transferred in each connection are numbered by TCP. These numbers start with a                    
  • fixed number
  • random sequence of 0’s and 1’s
  • one
  • sequence of zero’s and one’s
Q14 | The value of acknowledgement field in a segment defines                
  • sequence number of the byte received previously
  • total number of bytes to receive
  • sequence number of the next byte to be received
  • sequence of zeros and ones
Q15 | Two broad categories of congestion control are
  • open-loop and closed-loop
  • open-control and closed-control
  • active control and passive control
  • active loop and passive loop
Q16 | Retransmission of packets must not be done when                
  • packet is lost
  • packet is corrupted
  • packet is needed
  • packet is error-free
Q17 | 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                        
  • packet which are not lost
  • only those packets which are lost or corrupted
  • packet from starting
  • all the packets
Q18 | Closed-Loop control mechanisms try to
  • remove after congestion occurs
  • remove after sometime
  • prevent before congestion occurs
  • prevent before sending packets
Q19 | The technique in which a congested node stops receiving data from the immediate upstream node or nodes is called as                
  • admission policy
  • backpressure
  • forward signaling
  • backward signaling
Q20 | The packet sent by a node to the source to inform it of congestion is called                
  • explicit
  • discard
  • choke
  • backpressure
Q21 | In the slow-start algorithm, the size of the congestion window increases                       until it reaches a threshold.
  • exponentially
  • additively
  • multiplicatively
  • suddenly
Q22 | Which is not a application layer protocol?
  • http
  • smtp
  • ftp
  • tcp
Q23 | The packet of information at the application layer is called                      
  • packet
  • message
  • segment
  • frame
Q24 | Which one of the following is an architecture paradigms?
  • peer to peer
  • client-server
  • http
  • both peer-to-peer & client-server
Q25 | Application layer offers                service.
  • end to end
  • process to process
  • both end to end and process to process
  • none of the mentioned