1.3 Recap Short

Which device is used to connect multiple networks and direct data traffic?

• Hub

• Router
• Switch

• NIC

What does the term 'packet' refer to in a network?

• A piece of hardware that directs data.

• A set of rules for data communication.

• One unit of data sent through an IP network.

• A storage unit for data before it is transmitted.

What is the primary function of a network switch?

• To modulate analog signals into digital signals.

• To send data to the appropriate connected computer within a network.

• To convert electrical signals into data packets.

• To amplify the signal strength across a network.

Which topology is used when every device in a network is connected to every other device in the network?

• Star

• Mesh

• Wireless

• Bus

What is the primary purpose of a WAN?

• To connect devices within a single room.

• To connect computers across a large geographical area.

• To connect devices using Bluetooth technology.

• To connect network devices within a single building.

What is the role of the Domain Name System (DNS)?

• It translates domain names into ISP sub-domains.

• It translates domain names into IP addresses.

• It determines the fastest route for data packets.

• It translates IP addresses into domain names.

Why are IP addresses important in networking?

• They specify the target physical device for sent data.

• They specify the packet number and the error checksum for sent data.

• They specify where packets of data are sent to and received from.

• They secure data with encryption.

What is the advantage of using fibre optic cables over copper cables for data transmission?

• Fibre optic cables are less expensive.

• Fibre optic cables offer higher data transmission speeds.

• Fibre optic cables are easier to splice.

• Fibre optic cables can carry electrical power as well as data.

What is a MAC address?

• A type of password to access a network.

• The address of a website.

• The unique identifier of each device or network interface card.

• The identifier for the manufacturer of a device.

Match the address to the format

• 2001:0db8:85a3:0000:0000:8a2e:0370:7334

• IP v6

• 98-81-55-CD-F2-2F

• IP v4 Address

• 123.89.56.190

• MAC

Answer explanation

IP v4 is 4 groups of 8 bit denary values (min 0; max 255)

Ip v6 is 8 groups of 4 hexadecimal digits (min 0000; max FFFF)

MAC is 6 groups of 2 hexadecimal values (min 00; max FF)