MCIT Newest Actual Exam Complete Questions &
Correct Detailed Answers (Verified )
1. Which component is considered the brain of a computer?
A) RAM
B) CPU
C) Hard drive
D) Power supply
Answer: B
Rationale: The CPU (Central Processing Unit) executes instructions and performs calculations. RAM is
temporary storage, the hard drive is permanent storage, and the power supply provides electricity.
2. What does RAM stand for?
A) Read Access Memory
B) Random Access Memory
C) Rapid Access Module
D) Runtime Allocation Memory
Answer: B
Rationale: RAM is volatile memory used for temporary data storage while the computer is running. It loses
data when power is removed.
3. Which storage type has no moving parts?
A) HDD
B) SSD
C) Optical disc
D) Magnetic tape
Answer: B
Rationale: Solid State Drives (SSDs) use flash memory and have no moving parts, making them faster and
more durable than HDDs.
4. What is the primary function of an operating system?
A) Manage hardware and software resources
,B) Create documents
C) Browse the internet
D) Edit images
Answer: A
Rationale: An OS manages hardware, provides services to applications, and controls system resources.
Document creation and browsing are application functions.
5. Which file system is commonly used by Windows?
A) ext4
B) NTFS
C) HFS+
D) APFS
Answer: B
Rationale: NTFS (New Technology File System) is the default file system for modern Windows. ext4 is Linux,
HFS+ and APFS are macOS.
6. What does BIOS stand for?
A) Basic Input Output System
B) Binary Integrated Operating Software
C) Basic Internal Operating Setup
D) Boot Input Output Service
Answer: A
Rationale: BIOS is firmware that initializes hardware during boot. UEFI is its modern replacement.
7. Which port is commonly used for video output?
A) USB-A
B) HDMI
C) RJ-45
D) Audio jack
Answer: B
Rationale: HDMI transmits video and audio. USB-A is for peripherals, RJ-45 for Ethernet, and audio jack for
sound.
2
,8. What is the purpose of a GPU?
A) Process graphics and parallel tasks
B) Store files
C) Provide network access
D) Manage power
Answer: A
Rationale: A GPU handles rendering and parallel computations. It is distinct from storage, networking, and
power components.
9. Which command displays IP configuration in Windows?
A) ipconfig
B) ifconfig
C) netstat
D) ping
Answer: A
Rationale: ipconfig shows IP configuration on Windows. ifconfig is Linux/macOS, netstat shows connections,
and ping tests reachability.
10. What is a subnet mask used for?
A) Identify network and host portions of an IP
B) Encrypt traffic
C) Assign DNS
D) Block malware
Answer: A
Rationale: The subnet mask separates the network ID from the host ID in an IP address.
11. Which protocol is connection-oriented?
A) UDP
B) TCP
C) ICMP
D) ARP
Answer: B
3
, Rationale: TCP establishes a connection with a three-way handshake. UDP is connectionless.
12. What is the default port for HTTPS?
A) 80
B) 443
C) 21
D) 25
Answer: B
Rationale: HTTPS uses port 443. HTTP uses 80, FTP uses 21, and SMTP uses 25.
13. Which device operates at Layer 2 of the OSI model?
A) Router
B) Switch
C) Hub
D) Firewall
Answer: B
Rationale: Switches use MAC addresses at Layer 2. Routers operate at Layer 3, hubs at Layer 1, and firewalls
can operate at multiple layers.
14. What does DNS do?
A) Assign IP addresses
B) Resolve domain names to IP addresses
C) Encrypt data
D) Route packets
Answer: B
Rationale: DNS translates human-readable domain names into IP addresses. DHCP assigns IPs.
15. Which cable type is immune to electromagnetic interference?
A) UTP
B) STP
C) Fiber optic
D) Coaxial
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Correct Detailed Answers (Verified )
1. Which component is considered the brain of a computer?
A) RAM
B) CPU
C) Hard drive
D) Power supply
Answer: B
Rationale: The CPU (Central Processing Unit) executes instructions and performs calculations. RAM is
temporary storage, the hard drive is permanent storage, and the power supply provides electricity.
2. What does RAM stand for?
A) Read Access Memory
B) Random Access Memory
C) Rapid Access Module
D) Runtime Allocation Memory
Answer: B
Rationale: RAM is volatile memory used for temporary data storage while the computer is running. It loses
data when power is removed.
3. Which storage type has no moving parts?
A) HDD
B) SSD
C) Optical disc
D) Magnetic tape
Answer: B
Rationale: Solid State Drives (SSDs) use flash memory and have no moving parts, making them faster and
more durable than HDDs.
4. What is the primary function of an operating system?
A) Manage hardware and software resources
,B) Create documents
C) Browse the internet
D) Edit images
Answer: A
Rationale: An OS manages hardware, provides services to applications, and controls system resources.
Document creation and browsing are application functions.
5. Which file system is commonly used by Windows?
A) ext4
B) NTFS
C) HFS+
D) APFS
Answer: B
Rationale: NTFS (New Technology File System) is the default file system for modern Windows. ext4 is Linux,
HFS+ and APFS are macOS.
6. What does BIOS stand for?
A) Basic Input Output System
B) Binary Integrated Operating Software
C) Basic Internal Operating Setup
D) Boot Input Output Service
Answer: A
Rationale: BIOS is firmware that initializes hardware during boot. UEFI is its modern replacement.
7. Which port is commonly used for video output?
A) USB-A
B) HDMI
C) RJ-45
D) Audio jack
Answer: B
Rationale: HDMI transmits video and audio. USB-A is for peripherals, RJ-45 for Ethernet, and audio jack for
sound.
2
,8. What is the purpose of a GPU?
A) Process graphics and parallel tasks
B) Store files
C) Provide network access
D) Manage power
Answer: A
Rationale: A GPU handles rendering and parallel computations. It is distinct from storage, networking, and
power components.
9. Which command displays IP configuration in Windows?
A) ipconfig
B) ifconfig
C) netstat
D) ping
Answer: A
Rationale: ipconfig shows IP configuration on Windows. ifconfig is Linux/macOS, netstat shows connections,
and ping tests reachability.
10. What is a subnet mask used for?
A) Identify network and host portions of an IP
B) Encrypt traffic
C) Assign DNS
D) Block malware
Answer: A
Rationale: The subnet mask separates the network ID from the host ID in an IP address.
11. Which protocol is connection-oriented?
A) UDP
B) TCP
C) ICMP
D) ARP
Answer: B
3
, Rationale: TCP establishes a connection with a three-way handshake. UDP is connectionless.
12. What is the default port for HTTPS?
A) 80
B) 443
C) 21
D) 25
Answer: B
Rationale: HTTPS uses port 443. HTTP uses 80, FTP uses 21, and SMTP uses 25.
13. Which device operates at Layer 2 of the OSI model?
A) Router
B) Switch
C) Hub
D) Firewall
Answer: B
Rationale: Switches use MAC addresses at Layer 2. Routers operate at Layer 3, hubs at Layer 1, and firewalls
can operate at multiple layers.
14. What does DNS do?
A) Assign IP addresses
B) Resolve domain names to IP addresses
C) Encrypt data
D) Route packets
Answer: B
Rationale: DNS translates human-readable domain names into IP addresses. DHCP assigns IPs.
15. Which cable type is immune to electromagnetic interference?
A) UTP
B) STP
C) Fiber optic
D) Coaxial
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