1.3.3 Networks Flashcards

1
Q

What Is a Node?

A

A computer in a network.

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2
Q

What is a Network?

A

A collection of connected nodes.

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3
Q

What is a NIC?

A

Allows a node to attach to a network.

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4
Q

What is a switch?

A

Connects several devices in a network.

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5
Q

What is a LAN?

A

Local Area Network - Devices linked in the same geographic location

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6
Q

What is a WAN?

A

Wide Area Network - Devices linked across a large geographic area. Often connect via 3rd party channels.

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7
Q

What is a protocol?

A

A set of rules to govern data transmission.

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8
Q

What is HTTP?

A

Hyper Text Transfer Protocol - A protocol for viewing web pages.

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9
Q

What is HTTPS?

A

A protocol for viewing web pages securely using encryption.

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10
Q

What is FTP?

A

File Transfer Protocol - A protocol for transferring files.

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11
Q

What is a standard?

A

An agreed set of rules for creating a type of code

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12
Q

What is an Internet Protocol (IP) address?

A

A 4 byte number used to locate a device on a network unique.

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13
Q

What is a Media Access Control (MAC)?

A

A 6 byte hex number used to locate a network card or device. Always unique.

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14
Q

What is circuit switching?

A

A direct connection between two devices. Eg.a 1950’s phone call.

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15
Q

What is packet switching?

A

A connection between two devices sent in a small amounts of data.

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16
Q

Network Interface Card (NIC)

A

Provides a MAC address for a node.
Sends and receives network data.

17
Q

What is Ethernet?

A

A type of wired connection using coper cables.Also a protocol and a standard

18
Q

What is a Network Topology?

A

A map of how devices on a network connect to each other and the Internet.

19
Q

What are the 3 types of network topologies?

A

Star Topology
Mesh Topology
Bus Topology

20
Q

What is a server?

A

A computer that holds data for other computers.

21
Q

What is a client?

A

A computer that requests data from a server

22
Q

Two types of network service?

A

Client - Server and Peer to Peer

23
Q

What is a Wireless Access Point?

A

A device that sends and receives data using radio signals.

24
Q

What are the 2 types of WiFi speed?

A

2.4Ghz
5Ghz

25
What is a Layer?
A step in a protocol
26
What are the 4 layers for the TCP/IP stack?
Application Transport Internet Link
27
What is Application Layer?
Select an appropriate protocol
28
What is the Transport layer?
Split data into packets. Add the packet numbers and a port.
29
What Is the Internet layer?
Add the sender and recipient IP. Creates a socket.
30
What is a Link layer?
Add the sender and recipient MAC addresses.
31
What is a DNS?
Domain Name System - A database matching IP addresses to Domain names.
32
What is a URL?
Uniform Resource Locater - The written of a website.
33
What are the key DNS characteristics?
Speed Privacy Personalisation