GCIA: GIAC Certified Intrusion AnalystDemo

By GIAC · Question Mode

QuestionQ457

Concepts of TCP/IP and the Link Layer

Which statements apply to packets?

Each correct response represents a complete solution. Choose all that apply.

Choose three
  • A The PING utility uses them to verify connectivity between two hosts.
  • B They guarantee the delivery of datagrams.
  • C They are encapsulated within IP datagrams.
  • D They use UDP datagrams.
  • E They are used to report errors if a problem in IP processing occurs.
Explanation

ICMP provides diagnostic and error-reporting functions for IP. Ping uses ICMP Echo messages to test host reachability, and ICMP messages are carried within IP datagrams. ICMP does not guarantee datagram delivery and does not use UDP as its transport.

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