Understanding Computer Networks

The main function of a computer network in a school or office is to:

• facilitate communication and resource sharing

• increase the number of computers

• reduce the need for teachers

• eliminate the use of paper

Answer explanation

The main function of a computer network in a school or office is to facilitate communication and resource sharing, allowing users to connect, collaborate, and access shared resources efficiently.

A computer network helps manage computers by:

• allowing resource sharing and communication between computers

• increasing the physical size of computers

• making computers run on solar power

• turning computers into smartphones

Answer explanation

A computer network facilitates resource sharing and communication between computers, enabling them to work together efficiently. The other options do not accurately describe the primary function of a network.

The role of a server in a computer network is to:

• store and manage data

• provide internet access

• connect different networks

• secure the network

Answer explanation

The primary role of a server in a computer network is to store and manage data, allowing clients to access and utilize this information efficiently. Other options do not define the core function of a server.

Fill in the blank: A computer network firewall is like an ______ system, fighting off viruses and other harmful things.

• immune

• digestive

• respiratory

• circulatory

Answer explanation

The correct choice is 'immune' because a computer network firewall protects against viruses and threats, similar to how the immune system defends the body from harmful invaders.

True or False: The switches in a network make decisions where to send the different requests made by the user.

• True

• False

Answer explanation

True. Switches in a network analyze incoming data packets and make decisions on where to forward them based on their destination addresses, ensuring efficient data transmission.

The purpose of a router in a computer network is to:

• connect different networks and direct data packets between them

• store data permanently

• provide power to network devices

• act as a firewall to block unauthorized access

Answer explanation

The correct choice is to connect different networks and direct data packets between them, as routers facilitate communication between different networks by routing data efficiently.

Fill in the blank: Wireless routers turn internet data that travels in wires into data that travels through the ______.

• air

• water

• ground

• fiber optics

Answer explanation

Wireless routers convert internet data from wired connections into wireless signals that travel through the air, allowing devices to connect without physical cables.

Cloud computing allows us to access files from anywhere by:

• storing files on local devices

• using a centralized server accessible via the internet

• requiring physical transfer of files

• using Bluetooth technology

Answer explanation

Cloud computing enables access to files from anywhere by using a centralized server accessible via the internet, allowing users to retrieve and store data remotely, unlike local storage or physical transfers.

Name some popular cloud computing services mentioned in the passage.

• Amazon, Apple, Ebay

• Dropbox, iCloud, OneDrive

• Slack, Zoom, Microsoft Teams

• GitHub, Bitbucket, GitLab

Answer explanation

The correct answer is Dropbox, iCloud, and OneDrive, as they are well-known cloud storage services. The other options include collaboration tools and version control platforms, which do not fit the category of cloud storage services.

How many data centres does Google have around the world?

• 10

• 23

• 35

• 50

Answer explanation

Google has a total of 35 data centres worldwide, which support its vast cloud services and infrastructure. This number reflects their global reach and commitment to providing reliable services.