J277 Paper 1 Specification
Active Topic Review


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




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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