ITPEC IP October 2024 Question 33
When transmitted over the Internet, data is divided into blocks, each of which is transmitted with a header that specifies the destination, the block number, and an error detecting code. Which of the following is the term for such blocks of data?
Explanation
Packet — the block into which data is divided for transmission, each carrying a header with control information.
On the Internet, data is split into packets. Each packet has a header holding the destination address, a sequence (block) number so the receiver can reassemble the data in order, and an error-detecting code. Packets travel independently and are put back together at the destination.
Answer (b)
Why not others:
- •(a) Domain — a name area such as
example.used to identify hosts, not a unit of datacom - •(c) Port — a number that identifies the application or service on a host
- •(d) Router — the device that forwards packets between networks, not the packets themselves
Key rule: Data travels as packets; the router forwards them, the IP address says which host, and the port says which service.
Networks · AI-written, may contain errors
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