Computer Networking
Which statements are true regarding ICMP packets?1. They acknowledge receipt of a TCP segment.2. They guarantee datagram delivery.3. They can provide hosts with information about network problems.4. They are encapsulated within IP datagrams.

1 only
2, 3 and 4
3 and 4
2 and 3

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
HDLC (High-level Data Link Control) is

a method access control technique for multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued by ISO.
None of these
network access standard for connecting stations to a circuit-switched network

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Computer Networking