J277 Paper 1 Specification

Active Topic Review

Networks, Protocols and Layers

Understand
The FOllowing Concepts

Networks and Topologies

Types of network
What is a network
Home/Business networks

Network performance
Bandwidth
Latency
Number of users
Error rate
Wi-Fi performance

Roles of computers
Client-server
Peer-to-peer

Network hardware
Hubs, switches and routers
Transmission media
Wireless hardware

Internet technology
DNS system

Local hosting
Web servers and the Cloud

Network topology
Star topology
Mesh topology
Hybrid topology
Make your own network


Networks, protocols, and layers
Modes of connection

Ethernet
Wi-Fi
Bluetooth

Encryption
Encryption methods
Symmetric
Public - Private key

IP and MAC addressing
IP addressing
MAC addressing

Common protocols
TCP/IP
HTTP(S)
FTP
POP
IMAP
SMTP
Layer concept

Assessment Blueprint

OCR J277 Paper 1 Examination Breakdown

80 Marks

Total paper raw marks

50%

Weighting of overall GCSE

1h 30m

Written exam duration

Theory

Mandatory topic modules

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