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In packet-filtering router, the following information can be external

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In packet-filtering router, the following information can be external from the packet header.


i. Source IP address
ii. Destination IP address
iii. TCP/UDP destination port
iv. ICMP message type
v. TCP/UDP destination port


Options are:


A. i, ii, iii and iv only
B. i, iii, iv and v only
C. ii, iii, iv, v only
D. all i, ii, iii, iv, v


Correct option is:

D. all i, ii, iii, iv, v