CS 6250 EXAM ACTUAL EXAM 2026 | COMPUTER
NETWORKS EXAM | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | UPDATED
VERSION
In traditional routers, traffic forwarding is performed based on:
Destination IP address only
Source IP address only
Both source and destination IP addresses ---------CORRECT ANSWER------
-----------Destination IP address only
Consider a router with the forwarding table:
Prefix Match Output Link
11100000 00* A
11100000 01000000* B
1110000* C
11100001 1* D
,otherwise E
Given that the router uses longest prefix matching, determine the
output link for packet with destination IP address:
10001000 11110001 01010001 11110101
A
B
C
D
E ---------CORRECT ANSWER-----------------E
Consider a router with the forwarding table:
Prefix Match Output Link
11100000 00* A
,11100000 01000000* B
1110000* C
11100001 1* D
otherwise E
Given that the router uses longest prefix matching, determine the
output link for packet with destination IP address:
11100001 10000000 00010001 01110111
A
B
C
D
E ---------CORRECT ANSWER-----------------D
*** Look at the unibit trie questions ---------CORRECT ANSWER------------
-----
, By stride we refer to the number of bits that we check at every step
when traversing a trie. ---------CORRECT ANSWER-----------------True
Using packet classification techniques we can perform packet
forwarding based on multiple criteria, and not just based on destination
IP address ---------CORRECT ANSWER-----------------True
The backtracking approach has a higher cost in terms of time, whereas
the set-pruning approach has a higher cost in terms of memory ---------
CORRECT ANSWER-----------------True
The grid of tries technique offers a "middle ground" approach, merging
the backtracking and set-pruning techniques ---------CORRECT ANSWER-
----------------True
The head-of-line blocking refers to the problem when an entire queue
remains blocked because the head of the queue is blocked ---------
CORRECT ANSWER-----------------True
NETWORKS EXAM | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | UPDATED
VERSION
In traditional routers, traffic forwarding is performed based on:
Destination IP address only
Source IP address only
Both source and destination IP addresses ---------CORRECT ANSWER------
-----------Destination IP address only
Consider a router with the forwarding table:
Prefix Match Output Link
11100000 00* A
11100000 01000000* B
1110000* C
11100001 1* D
,otherwise E
Given that the router uses longest prefix matching, determine the
output link for packet with destination IP address:
10001000 11110001 01010001 11110101
A
B
C
D
E ---------CORRECT ANSWER-----------------E
Consider a router with the forwarding table:
Prefix Match Output Link
11100000 00* A
,11100000 01000000* B
1110000* C
11100001 1* D
otherwise E
Given that the router uses longest prefix matching, determine the
output link for packet with destination IP address:
11100001 10000000 00010001 01110111
A
B
C
D
E ---------CORRECT ANSWER-----------------D
*** Look at the unibit trie questions ---------CORRECT ANSWER------------
-----
, By stride we refer to the number of bits that we check at every step
when traversing a trie. ---------CORRECT ANSWER-----------------True
Using packet classification techniques we can perform packet
forwarding based on multiple criteria, and not just based on destination
IP address ---------CORRECT ANSWER-----------------True
The backtracking approach has a higher cost in terms of time, whereas
the set-pruning approach has a higher cost in terms of memory ---------
CORRECT ANSWER-----------------True
The grid of tries technique offers a "middle ground" approach, merging
the backtracking and set-pruning techniques ---------CORRECT ANSWER-
----------------True
The head-of-line blocking refers to the problem when an entire queue
remains blocked because the head of the queue is blocked ---------
CORRECT ANSWER-----------------True
