What does CPU stand for?
AnswerCentral Processing Unit
The CPU is the chip that carries out program instructions, often called the brain of the computer.
Tech · Facts & stats
IT facts & stats
7 fact-checked facts about information technology, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does RAM stand for?
AnswerRandom Access Memory
RAM is fast working memory that holds data in use and is cleared when power is off.
Going deeper
What is the main job of DNS on the internet?
AnswerTurning domain names into IP addresses
The Domain Name System looks up the numeric IP address that matches a name like example.com.
How many bits long is an IPv4 address?
Answer32
IPv4 addresses are 32 bits, usually written as four numbers from 0 to 255.
What is 'phishing'?
AnswerA fake message that tricks people into revealing information
Phishing uses messages pretending to be trusted senders to steal passwords or other details.
Expert level
How many bits long is an IPv6 address?
Answer128
IPv6 uses 128-bit addresses, usually written as eight groups of hexadecimal digits separated by colons.
What is the default port number for HTTPS?
Answer443
HTTPS uses TCP port 443 by default, while plain HTTP uses port 80.
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