Computing Flashcards

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What is a DNS Server?
A DNS server is a index table which converts hypertext addresses into their IP addresses.
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What is a modem?
A combined modulator/demodulation device for changing a digital signal to an analog signal.
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What is a router?
A router is a device for connecting multiple networks and routing data between them.
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What is a parity bit used for?
A parity bit is used to detect whether or not a packet of data is corrupted by checking if it is odd or even.
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What is lossy compression?
Lossy compression is a file size reduction process which does not allow for complete file reconstruction.
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Where is encryption used?
Encryption is used to securely send data that is unusable unless a decryption key is given.
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What is an ISP?
An Internet Service Provider.
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What is a data packet?
A data packet is a broken down part of a file, which is sent along the quickest route to a node on a network.
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What is an IP address?
An IP address is a unique number given to each node connected to the internet. (Eg. 192.123.4.11)
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What is TCP?
Transmission control protocol. In order to ensure all packets of data arrive, the TCP will check before and after sending for the total number of packets.
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What is symmetric encryption?
A method of encryption where the sender and receiver share the same encryption key.
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What is a public key?
A public key is usually a 256 bit encryption key used by anyone to securely obfuscate data.
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What is a private key?
A private key is a single key given to a receiver of encrypted data in order to de-scramble packets.
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Other cards in this set

Card 2

Front

What is a modem?

Back

A combined modulator/demodulation device for changing a digital signal to an analog signal.

Card 3

Front

What is a router?

Back

Preview of the front of card 3

Card 4

Front

What is a parity bit used for?

Back

Preview of the front of card 4

Card 5

Front

What is lossy compression?

Back

Preview of the front of card 5
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