day 10- IPv4 Header Condensed CCNA Flashcards

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Description and Tags

Vocabulary flashcards covering the IPv4 header fields, TTL function and behavior, and protocol numbers for TCP, UDP, and ICMP.

6 Terms

1
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IPv4 TTL Purpose

Prevents packets from looping forever.

2
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TTL Router Decrement

Decreases by 1 at each router.

3
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IPv4 Protocol Field

Identifies the encapsulated Layer 4 protocol.

4
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TCP Protocol Number

6

5
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UDP Protocol Number

17

6
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ICMP Protocol Number

1