cis exam 2

Question 1

What is the system unit of a computer?

Answer 1

the main case of a computer, housing essential components like the motherboard, CPU, memory, and power supply.

Question 2

What are examples of system units?

Answer 2

Smartphones, tablets, laptops, desktops, and wearables.

Question 3

What is the function of the motherboard (system board)?

Answer 3

It facilitates communication between components and contains sockets, slots, and bus lines for data transfer.

Question 4

What is the CPU (Central Processing Unit)?

Answer 4

The CPU, or microprocessor, is responsible for executing instructions and consists of a control unit and an Arithmetic Logic Unit (ALU).

Question 5

What does the control unit do in the CPU?

Answer 5

It manages operations within the CPU.

Question 6

What is the role of the ALU (Arithmetic Logic Unit)?

Answer 6

It performs calculations and logical operations.

Question 7

What are key CPU performance metrics?

Answer 7

Word size (16, 32, 64-bit) and clock speed (GHz).

Question 8

What are the main types of memory in computers?

Answer 8

RAM (volatile memory) and ROM (non-volatile memory).

Question 9

What is flash memory?

Answer 9

A hybrid of RAM and ROM that provides fast access and retains data.

Question 10

Why is understanding memory types important?

Answer 10

It helps optimize computer performance and data management.

Question 11

What do expansion slots and cards do?

Answer 11

They allow for additional functionality, like installing graphics or network cards.

Question 12

What is the difference between system buses and expansion buses?

Answer 12

System buses connect the CPU to memory; expansion buses connect the CPU to peripheral devices.

Question 13

Name common ports used for connectivity.

Answer 13

USB, HDMI, and Ethernet.

Question 14

What is secondary storage?

Answer 14

Storage that retains data when the computer is powered off (e.g., hard drives, USB drives).

Question 15

What is the difference between physical and logical storage?

Answer 15

Physical storage is hardware; logical storage is data organization by the OS.

Question 16

How do HDDs and SSDs differ?

Answer 16

HDDs use magnetic storage for large capacity; SSDs are faster and more durable.

Question 17

What are examples of optical storage devices?

Answer 17

CDs, DVDs, and Blu-ray discs.

Question 18

What is cloud storage?

Answer 18

Online data access from anywhere with an internet connection.

Question 19

What is archival storage?

Answer 19

Storage designed for long-term data retention, crucial for records and backups.

Question 20

What are communication channels in networking?

Answer 20

Pathways for data transmission: wireless (Wi-Fi, Bluetooth) and physical (twisted-pair, coaxial, fiber-optic).

Question 21

What does a modem do?

Answer 21

Acts as a gateway to the internet.

Question 22

What is the role of a router?

Answer 22

Manages data traffic within networks.

Question 23

What is bandwidth?

Answer 23

The maximum data transmission capacity over a network.

Question 24

Name key internet protocols.

Answer 24

HTTPS (secure browsing), TCP/IP (data transmission), DNS (domain name resolution).

Question 25

What is packetization?

Answer 25

Breaking data into smaller packets for efficient transmission.

Question 26

Why are internet protocols important?

Answer 26

They ensure reliable and secure network communication.

Question 27

What is network topology?

Answer 27

The arrangement of elements in a computer network (bus, ring, star, mesh, tree).

Question 28

What is a firewall?

Answer 28

A security system that monitors and controls incoming/outgoing network traffic.

Question 29

What is a VPN (Virtual Private Network)?

Answer 29

A secure, encrypted connection over public networks.

Question 30

What is an intranet?

Answer 30

A private network used within an organization.

Question 31

What is an extranet?

Answer 31

A network that extends access to external partners.

Question 32

Why are intranets and extranets important?

Answer 32

They facilitate secure collaboration and efficient data flow within and between organizations.

Question 33

What does a scanner do?

Answer 33

Digitizes physical documents/images into digital format.

Question 34

What is a webcam used for?

Answer 34

Captures video/images for video conferencing and streaming.

Question 35

What does a microphone do?

Answer 35

Captures sound for communication, recording, and voice recognition.

Question 36

What is a virtual keyboard?

Answer 36

A software-based keyboard displayed on a touchscreen.

Question 37

What is a multitouch screen?

Answer 37

A screen that allows multiple touch points, enabling gestures like pinch-to-zoom.

Question 38

Why are input devices important?

Answer 38

They enable user interaction with computers for data entry and software control.

Question 39

How are input devices integrated in various fields?

Answer 39

Used in education, healthcare, entertainment, and more.

Question 40

How have input devices evolved?

Answer 40

From traditional keyboards/mice to advanced touch and voice recognition systems.