ICMP Quiz (Online) - Networkwalks Academy

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?

PC host ATECH1 has a default gateway correctly configured

PC host ATECH1 has connectivity up to Layer 5 of the OSI model

PC host ATECH1 has the TCP/IP protocol stack correctly installed

PC host ATECH1 has connectivity with a local host

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

Address Purpose

Synchronization Purpose

Echo Purpose

Diagnostic Purpose

Which port number does ICMP use?

Port 80

None

ICMP does not use any port number as it does not use any transport layer protocols

Port 17

Which statement is NOT true regarding ICMP?

ICMP can identify network problems

ICMP provides reliable transmission of data in an IP environment

ICMP is documented in RFC 792

An ICMP echo-request message is generated by the ping command

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

Timestamp reply

Source quench

Information interrupt request

ICMP echo request

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

ICMP Hold and ICMP Send

Echo Off and Echo On

ICMP Request and ICMP Reply

Echo Request and Echo Reply

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?

ARP & ICMP

DNS & DHCP

DHCP & ICMP

CDP & ARP

What statement is true regarding ICMP packets?

They are encapsulated within UDP datagrams

They guarantee datagram delivery

They acknowledge receipt of TCP segments

They can provide hosts with information about network problems & are encapsulated within IP datagrams

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

Type and IPS

Type and Code

None

MPLS

10.

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

Pongestion detection

Packet-loss detection

Hop-by-hop response time

One-way jitter measurement