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Chapter 2: Data Transmission

What smaller units is data broken down into, to be transmitted?
Accomodations
Payloads
Trailers
Packets
A router is a device that...
Breaks down data into packets
Controls how each packet is transmitted
Doesn't exist
Switches packets
The packet header contains the payload
True
False
The trailer is sometimes known as the footer.
True
False
The methods of data transmission are...
Serial, parallel, synchronised, unsynchronised
Serial, parallel, asynchronous, synchronous
Simplex, [half/full] duplex, asynchronous, synchronous
Serial, parallel, simplex, [half/full] duplex
Which method of data transmission sends data multiple bits at a time using multiple wires?
Serial
Parallel
Synchronous
Full-duplex
What is a disadvantage of USB?
Complicated interface
Cannot be used to power a device
Length of cable is limited
Has a higher transmission speed than ethernet
Which is an error detection method?
Checksum; check digit
Automatic repeat request
Echo check
Parity check
What is the first step for asymmetric encryption?
Plain text encrypted to cipher text using private key
Plain text encrypted to cipher text using public key
Cipher text is decrypted to plain text using private key
Plain text encrypted to cipher text using asymmetric key
USB stands for Universal Signal Bus
True
False
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