ICMP Quiz (Online)

What are the Echo-request and echo-reply messages designed for?

Which function does IP SLA ICMP ECHO operation perform to assist with troubleshooting?

An administrator issues the command “#ping 127.0.0.1” from the command line prompt on a PC host named ATECH1. If an ICMP reply is received, what does this confirm?

When you use the ping command to send ICMP messages across a network, what’s the most common request/reply pair you’ll see

Which ICMP message is sent by a host in the network to test connectivity with another host?

For security reasons, the Cisco network administrator needs to prevent pings into the corporate networks from hosts outside the internetwork. Using access control lists, which protocol should be blocked?

What is the header size of ICMP Packet?

What kind of message does a PING send out to test connectivity?

Which port number does ICMP use?

Which two fields in the ICMP header is used for identifying the intent of ICMP message?