1.3.3 Network Design Quiz: OCR Computer Science A Level Networks

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Questions and Answers

What is the main difference between a Local Area Network (LAN) and a Wide Area Network (WAN)?

WAN is limited to a single site while LAN can cover a large geographical area (correct)

LAN covers a larger geographical area than WAN

LAN is spread over a large geographical area while WAN is spread over a small geographical area

WAN covers a smaller geographical area than LAN

What does the physical topology of a network refer to?

The layout which shows how data flows

The physical layout of the wires and components which form the network (correct)

The method used to transmit data between computers

The security measures in place to protect the network

Which protocol is responsible for translating domain names to IP addresses?

FTP

TCP

DNS (correct)

HTTP

What does the logical topology of a network describe?

The layout which shows how data flows Signup and view all the answers

Which type of network is commonly found in schools and small businesses?

Local Area Network (LAN) Signup and view all the answers

What is the purpose of a firewall in network security?

To filter incoming and outgoing network traffic based on predetermined security rules Signup and view all the answers

What is a disadvantage of bus topology?

If backbone cable fails, the entire network gets disconnected Signup and view all the answers

Which network topology is most commonly found with wireless technology such as Wi-Fi?

Mesh Topology Signup and view all the answers

What is an advantage of star topology?

Performance is consistent even with heavy network traffic Signup and view all the answers

What makes maintaining the network difficult in mesh topology?

Every node is connected to every other node Signup and view all the answers

Which protocol is used for web page rendering?

HTTP Signup and view all the answers

What is the TCP/IP stack of networking protocols used for during communication?

Routing of packets through networks Signup and view all the answers

What does a protocol define?

Set of rules defining how two computers communicate with each other Signup and view all the answers

What is the Internet structure that allows computers on opposite sides of the globe to communicate with each other?

Network of networks Signup and view all the answers

What happens if the central switch fails in star topology?

The rest of the network fails Signup and view all the answers

What is the main disadvantage of mesh topology if using a wired network?

A large quantity of cable is required compared to other network topologies like bus and star Signup and view all the answers

Study Notes

Network Fundamentals

The main difference between a Local Area Network (LAN) and a Wide Area Network (WAN) is the geographical area it covers, with LAN connecting devices in a limited geographical area and WAN covering a larger geographical area.
The physical topology of a network refers to the physical layout of devices and connections.

Protocols and Addressing

The protocol responsible for translating domain names to IP addresses is DNS (Domain Name System).
DNS is used to resolve human-readable domain names to IP addresses.

Network Types

A Local Area Network (LAN) is commonly found in schools and small businesses.
LAN connects devices in a limited geographical area.

Network Security

The purpose of a firewall in network security is to block or allow incoming and outgoing network traffic based on predetermined security rules.

Network Topologies

A disadvantage of bus topology is that if the backbone cable fails, the entire network fails.
Star topology is commonly found in wireless technology such as Wi-Fi.
An advantage of star topology is that if one device fails, others remain unaffected.
In mesh topology, each device is connected to every other device, making it difficult to maintain the network.
If the central switch fails in star topology, the entire network fails.
A disadvantage of mesh topology in a wired network is that it requires a large number of cables.

Internet and Communication

The TCP/IP stack of networking protocols is used for communication between devices on the internet.
A protocol defines the rules and structure of data exchanged between devices.
The internet structure that allows computers on opposite sides of the globe to communicate with each other is TCP/IP.
HTTP (Hypertext Transfer Protocol) is used for web page rendering.

Network Troubleshooting

In mesh topology, maintaining the network is difficult due to the complexity of multiple connections.

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Description

Test your knowledge on networks, protocols, internet structure, network security, network hardware, client-server and peer-to-peer concepts as per the OCR Computer Science A Level 1.3.3 syllabus.