M4_L1_ICMP

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Strayer University *

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PT1420

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Computer Science

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Feb 20, 2024

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DCOM 252: Lab Assignment 1 Module 4: Internet Control Message Protocol (ICMP) Name (Please Print) : _______LENORA GIBSON______________ Total Points : 20 (each question is worth 2 points each) Graded Score: Submission Requirements : write your answers directly on this sheet in the spaces provided 1. The ICMP is defined in RFC __ 792_____, as of what month and year? FEB 1979 2. ICMP messages are encapsulated within _ DATA PORTION OF THE IP DATAGRAM______. 3. ICMP doesn’t use port numbers (like those used by TCP and UDP). Instead, ICMP uses _ MESSAGE TYPES______. For example, an echo reply uses message type _ 0______. 4. Describe a situation when a system would receive an ICMP type 3, code 3 error: For questions 5-10, use the pingfrag.pcap trace file: 5. What protocol field and value tells the receiving node that what follows the header is ICMP data? VALUE OF 1 6. Packet #3: the client (10.0.99.2) is sending a type __8_____, code ___ 0____ message to the server (10.0.0.1). 7. Another name for the type of message sent in packet #3 is an echo ping _ A REQUEST______. 8. Packet #3: How many bytes of data are being sent in this ICMP packet? What’s in the payload? 4096 Bytes A-W 9. What packet number is the reply for the echo request sent in packet #3? 6 1
DCOM 252: Lab Assignment 1 Module 4: Internet Control Message Protocol (ICMP) 10.What ICMP fields and values support your answer in question #9? Packet 3 and 6 2
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