The
maximum window size for data transmission using the selective reject protocol
with n-bit frame sequence numbers is:
(a) 2^n
(b) 2^(n-1)
(c) 2^n – 1
(d) 2^(n-2)
(a) 2^n
(b) 2^(n-1)
(c) 2^n – 1
(d) 2^(n-2)
Answer
(b)
An
organization has a class B network and wishes to form subnets for 64
departments. The subnet mask would be:
(a) 255.255.0.0
(b) 255.255.64.0
(c) 255.255.128.0
(d) 255.255.252.0
(a) 255.255.0.0
(b) 255.255.64.0
(c) 255.255.128.0
(d) 255.255.252.0
Answer
(d)
The size of network ID is 16 bit in class B networks. So bits after 16th bit must be used to create 64 departments. Total 6 bits are needed to identify 64 different departments. Therefore, subnet mask will be 255.255.252.0.
The size of network ID is 16 bit in class B networks. So bits after 16th bit must be used to create 64 departments. Total 6 bits are needed to identify 64 different departments. Therefore, subnet mask will be 255.255.252.0.
In the
slow start phase of the TCP congestion control algorithm, the size of the
congestion window
(A) does not increase
(B) increases linearly
(C) increases quadratically
(D) increases exponentially
(A) does not increase
(B) increases linearly
(C) increases quadratically
(D) increases exponentially
Answer
(D)
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