Exploring ICMP and Networking Utilities

What is the primary function of ICMP?

• Routing protocols

• Feedback on IP packet processing issues

• Physical layer connectivity

• Data encryption

Which ICMP message type is used to test host reachability?

• Echo request

• Router advertisement

• Time exceeded

• Redirect message

What does an ICMP 'destination unreachable' message indicate?

• All devices are reachable

• A destination or service is unreachable

• The network is fully operational

• The host is performing a traceroute

What additional functionality does ICMPv6 provide over ICMPv4?

• Reduced header size

• Faster packet delivery

• Echo reply only

• Neighbor discovery protocol

What is the purpose of the Neighbor Solicitation message in ICMPv6?

• To request router advertisements

• To detect duplicate addresses

• To encrypt data packets

• To advertise routing prefixes

How does the ping command test connectivity?

• Through TCP handshake

• By sending HTTP requests

• Using ICMP echo request and reply messages

• By checking MAC addresses

What might cause the first ping to timeout?

• Incorrect IP address

• Network congestion

• Address resolution needs to be performed

• Server downtime

What does traceroute use to determine the path between two hosts?

• ICMP time exceeded messages

• UDP packets

• ICMP echo requests

• SSL certificates

What does an asterisk (*) in a traceroute output signify?

• Lost or unreplied packet

• Encryption enabled

• Successful packet delivery

• Optimal path found

What is the maximum TTL value used by traceroute to reach a destination?

• 64

• 128

• 255

• 512