Edexcel GCSE Computer Science: Topic 4: Networks

What is the main reason why computers are connected in a network?

• To reduce power consumption

• To improve display resolution

• To increase processing speed

• To share resources and information

Which of the following is an example of a LAN (Local Area Network)?

• The network of a single home

• The network of an entire city

• The network of multiple countries

• The network of a continent

What is the structure of the internet based on?

• Domain naming

• IP addressing

• Physical location

• MAC addressing

How does the characteristics of wired and wireless connectivity impact on performance?

• Memory, storage, processing power

• Resolution, refresh rate, response time

• Color, brightness, contrast

• Speed, range, latency

In what units are network speeds measured?

• Miles per hour, kilometers per hour, knots

• Bytes, kilobytes, megabytes

• Kilobit, megabit, gigabit per second

• Hertz, kilohertz, megahertz

What is the role of TCP/IP in network communication?

• Ensuring physical security

• Providing wireless connectivity

• Handling data transmission

• Managing access control

Which layer of the TCP/IP model is responsible for addressing and routing?

• Link

• Internet

• Transport

• Application

What are examples of network topologies?

• CPU, RAM, hard drive

• Keyboard, mouse, monitor

• Bus, star, mesh

• Database, spreadsheet, presentation

What is the importance of network security?

• To increase processing speed

• To reduce power consumption

• To improve display resolution

• To protect against unauthorized access

Which of these will not help guard against unauthorised access of a computer

• Password policy

• Firewalls

• Physical security

• Defragmenting