NETWORK SECURITY
INTRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
TCP/IP (Transport Control Protocol/IP Address)
|
|
|
SNMP (Simple Network Management Protocol)
|
|
|
Internet Control Message Protocol (ICMP)
|
|
|
UDP (User Datagram Protocol)
|
Detailed explanation-1: -ICMP is a network layer protocol used by routers, intermediary devices and hosts to communicate error information or updates to other routers, intermediary devices and hosts. ICMP messages are sent in several scenarios.
Detailed explanation-2: -The protocol diagnoses network connectivity or data transmission issues between devices. It helps by sending, receiving, and processing ICMP messages to report connectivity issues to the source network device. Hence, the primary purpose of the ICMP protocol is to report errors at the network layer.
Detailed explanation-3: -ICMP messages are encapsulated in IP packets so most people would say that it’s a layer 4 protocol like UDP or TCP. However, since ICMP is a vital part of the IP protocol it is typically considered a layer 3 protocol. The first byte specifies the type of ICMP message.