ICMP Quiz (Online)

1.  

Which port number does ICMP use?

2.  

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

3.  

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

4.  

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?

5.  

You execute the ping command from a host, but the router does not have a path to its destination. Which of the following ICMP message types will a client receive from the router?

6.  

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?

7.  

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

8.  

What is the header size of ICMP Packet?

9.  

Which statement is NOT true regarding ICMP?

10.  

What statement is true regarding ICMP packets?