Introduction to computer networks

What are fibre-optic cables made of?

• Copper

• Glass

• Aluminium

• Iron

Complete the sentence: Fibre-optic cables transmit signals in the form of (a)   signals.

• Light

• Electrical

• Radio

Complete the sentence: In wireless connections, data is transmitted in the form of (a)   signals.

• Light

• Electrical

• Radio

Which of the following is an advantage of wireless networks when compared to wired networks?

• Security

• Higher quality

• Connection of multiple devices without any additional hardware

• None of the above

Complete the sentence: A MAC address consists of (a)   bits.

• 8

• 16

• 24

• 48

Which of the following is TRUE about a MAC address?

• A user cannot change the MAC address.

• A MAC address is assigned by the manufacturer.

• A MAC address uniquely identifies a computer.

• All of the above

Which of the following network hardware connects two separate LAN networks?

• Router

• Modem

• Hub

• Bridge

Complete this sentence: A (a)   turns a digital data into an electrical signal

• Router

• Modem

• Hub

• Bridge

Complete the sentence: (a)   broadcasts data to all devices in the network.

• Router

• Modem

• Hub

• Bridge

Which of the following is FALSE about switches?

• Switches store the MAC address of devices on a network.

• Switches broadcast data to all devices in the network.

• Switches filters data packets.

• All of the above