OCR GCSE Computer Networks

Encryption

________ is necessary on public networks to avoid data being intercepted.

Static addresses

________ may be used so that a network manager knows which devices are on a network.

Backups

________ are done centrally from the file server so each device updates at the same time in one go.

Peer to Peer

________ is more suitable for low traffic environments.

Standards

________: Rules that make sure different manufacturers and providers create products that work together.

Transmission capacity

________ of a network connection in a given amount of time.

Star Topology

The ________ requires fewer cables but that can cause bottlenecks on a busy network.

Protocol

________: Standard used to define a method of exchanging data over a computer network.

TCP IP Stack

The ________ is a 4 layer concept where there is an Application layer, Transport /Transmission Layer, Internet Layer and Data Link /Network Layer.

IPv4

________ is usually 4 sets of digits between 0 and 255 while IPv6 is usually 8 blocks of 4 hexadecimal digits.

LANs

________ are generally safer in terms of security due to their small size but may still experience risks like: Viruses, Email attachments, Trojan horses and clicking on unsafe links.

electrical signals

Controls how data is sent as ________ over cables, wireless or other hardware.

Data Packet

________: Parts of files that have been split up to be sent over the internet.

Web browser

________ sends request to the IP address for the website.

Cloud software

________ is good for low- powered devices or for travelers as it just stores your files and allows you to use web based software.

Client Servers

________ are useful for high traffic environments.

Cloud

The ________ is remotely accessed storage, which is accessed through the Internet.

Network

________: Two or more computers connected together to share information and resources.

IP

________ is a set of rules devices use to communicate with each other.

LANs

________ may be connected via Ethernet cables or wirelessly due to their small sizes.

Internet

The ________ is a WAN made up of smaller networks.

Web browser

________ sends web address to a DNS server.

Network

Two or more computers connected together to share information and resources

LAN

Local Area Network

WAN

Wide Area Network

WANs

________cover a much larger area so may need to use other forms of connection like: Dedicated lines, Leased lines, Phone lines or satellites

Viruses

LANs may still experience risks like: ______, Email attachments, Trojan horses and clicking on unsafe links

Security risks may include:

Gaps in security, Increased vulnerability to viruses and data breaches

Data Packet

Parts of files that have been split up to be sent over the internet

Client

Device able to request information from a server

Server

Manages access to centralised resources

Peer

Something of the same status/ability

The Internet

Collection of computers worldwide that are connected together

IP

Internet Protocol

ISP

Internet Service Provider

DNS

Domain Name System

MAC

Media Access Control

Standards

Rules that make sure different manufacturers and providers create products that work together

Protocol

Standard used to define a method of exchanging data over a computer network

TCP/IP

Transmission Control Protocol/Internet Protocol

HTTP/HTTPS

Hyper Text Transfer Protocol (Secure)

FTP

File Transfer Protocol

POP

Post Office Protocol

IMAP

Internet Message Access Protocol

SMTP

Simple Mail Transfer Protocol

Packet switching

Splitting data into packets to be sent along different routes to its destination