Networks and Protocols (OCR A-Level Computer Science): Flashcards
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Practise the cards
15 cards from this deck
Network definition
Network definition
Interconnected devices sharing resources & communicating
Min. devices for a network
Min. devices for a network
Two or more
LAN (Local Area Network)
LAN (Local Area Network)
Network covering small geographical area (home, school, office)
WAN (Wide Area Network)
WAN (Wide Area Network)
Network covering large area; internet is largest WAN
PAN (Personal Area Network)
PAN (Personal Area Network)
Small network of individual's devices (e.g., Bluetooth)
Protocol definition
Protocol definition
Set of rules defining how data is transmitted across a network
Standard definition
Standard definition
Agreed specification providing consistent technical guidelines
TCP/IP purpose
TCP/IP purpose
Foundational protocol suite for data transmission over internet
UDP characteristic
UDP characteristic
Faster but less reliable protocol; used when speed is priority
SMTP function
SMTP function
Simple Mail Transfer Protocol; manages sending of emails
HTTP function
HTTP function
Primary protocol for transmitting web pages on the internet
HTTPS function
HTTPS function
Secure version of HTTP that encrypts data for secure transactions
IEEE role
IEEE role
Develops standards for LANs (Ethernet) & wireless (Wi-Fi)
W3C role
W3C role
Sets standards for web technologies like HTML and CSS
Protocols vs Standards
Protocols vs Standards
Protocols: rules of communication; Standards: ensure compatibility