ICMP Quiz (Online)

1.  

What is the companion of the Internet Control Message Protocol (ICMP)?

2.  

Which statement is NOT true regarding ICMP?

3.  

The network administrator at ATECH issues the ”#ping 10.0.0.99” command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test?

4.  

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

5.  

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?

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.  

What is the header size of ICMP Packet?

8.  

Which port number does ICMP use?

9.  

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?

10.  

What statement is true regarding ICMP packets?