networks

What is a network?

• Two or more computers connected together for the purpose of communicating

• A standalone computer

• Two or more computers working in the same time

What is a LAN?

• Large area network

• Large arrayed network

• Local area network

What is an advantage of using fibre-optic cables over copper cable?

• Fibre-optic cables cost less than copper cable

• Fibre-optic cables have a higher data transfer rate than copper cable

• Fibre-optic cables are more flexible than copper cable

What is the purpose of a router?

• The purpose of a router is to connect networks together.

• To broadcast messages across a network

Which of the following is a disadvantage of using a wireless connection?

• Limited connection range

• Freedom of movement

• Users cannot share files

Answer explanation

Limited connection range is a disadvantage of using a wireless connection.

Which of these is a disadvantage of networks?

• Spread of malware

• Sharing of files

• Access to hardware

Answer explanation

When devices are connected together, this increases the risk that malicious software - malware - may be spread.

Which of these is a WAN?

• The internet

• A business network that is contained within one building

• A school network that covers two buildings on the same site

Answer explanation

The internet is a wide area network (WAN).

What is a protocol?

• A set of rules governing communication across a network

• A component of a packet

• A unique serial number assigned to a network interface card/controller (NIC)

Answer explanation

A protocol is a set of rules governing communication across a network.

What is meant by encryption?

• Disguising a message so that it cannot be understood by anyone but its intended recipient

• Abbreviating data for simpler transmission and storage

• Password protecting a file

Answer explanation

Encryption is disguising a message so that it cannot be understood by anyone but its intended recipient.