151 to 160 th qs.

151.
To send a data packet using datagram , connection will be established



a) before data transmission.

b) connection is not established before data transmission.

c) no connection is required.

d) none of the above.


152.
Word allignment is



a) alligning the address to the next word boundary of the machine.

b) alligning to even boundary.

c) alligning to word boundary.

d) none of the above.


153.
When a 'C' function call is made, the order in which parameters passed to the function are pushed into the stack is



a) left to right

b) right to left

c) bigger variables are moved first than the smaller variales.

d) smaller variables are moved first than the bigger ones.

e) none of the above.


154.
What is the type of signalling used between two exchanges?



a) inband

b) common channel signalling

c) any of the above

d) none of the above.


155.
Buffering is



a) the process of temporarily storing the data to allow for small variation in device speeds

b) a method to reduce cross talks

c) storage of data within transmitting medium until the receiver is ready to receive.

d) a method to reduce routing overhead.


156.
Memory allocation of variables declared in a program is



a) allocated in RAM.

b) allocated in ROM.

c) allocated on stack.

d) assigned to registers.


157.
A software that allows a personal computer to pretend as a computer terminal is



a) terminal adapter

b) bulletin board

c) modem

d) terminal emulation


158.
Which addressing mode is used in the following statements:

(a) MVI B,55

(b) MOV B,A

(c) MOV M,A

(a) Immediate addressing mode.

(b) Register Addressing Mode

(c) Direct addressing mode


159.
Memory. Management in Operating Systems is done by



a) Memory Management Unit

b) Memory management software of the Operating System

c) Kernel


160.
RS-232C standard is used in _____________.