ITPEC IP October 2024 Question 33
ITPEC IP October 2024 — Question 33 of 100
A packet is a block of data transmitted through a packet-switched network together with control information in a header. Large data is divided into manageable units for transmission. Headers contain information needed for delivery and processing, such as source and destination addresses, sequence-related information at an appropriate protocol layer, and fields used for integrity checks. The receiver uses this information to process and reassemble the data.
Answer (b)
Why not others:
- (a) Domain is a naming or administrative area, such as a DNS domain
- (c) Port identifies a communication endpoint for an application or service
- (d) Router is a device that forwards packets between networks
Key rule: The data unit is a packet; a router forwards it, an address identifies its destination, and a port identifies the destination service.
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