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Cisco IT Essentials Module 1 – 4 Practice Questions v2

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.

Which component converts AC to DC voltages (3.3V, 5V, 12V) for internal parts?

a)

Motherboard

b)

Power supply

c)

CPU

d)

Expansion card

2.

In which socket type are the pins located in the socket rather than on the CPU package?

a)

PGA

b)

LGA

c)

ZIF

d)

BGA

3.

Which memory is volatile working storage for data/programs in use by the CPU?

a)

ROM

b)

RAM

c)

EEPROM

d)

Flash

4.

Which cooling method is passive (no power required)?

(a)  

5.

Which optical format has the highest capacity per disc listed?

a)

CD

b)

DVD

c)

Blu-ray

d)

Zip disk

6.

Which statement about power-supply rails is TRUE?

a)

12V lines feed digital logic only

b)

3.3V/5V typically feed digital logic, 12V powers motors/fans

c)

5V powers only GPUs

d)

3.3V powers only fans

7.

Which PSU form factor is most common in modern desktops?

a)

AT

b)

ATX12V

c)

EIDE

d)

ITX

8.

Which interface is the legacy parallel predecessor to SATA for internal drives?

a)

NVMe

b)

IDE/EIDE (PATA)

c)

USB

d)

SCSI-3

9.

What benefit does NVMe provide for SSDs?

a)

Uses VGA port

b)

Lets SSDs attach to PCIe without special drivers

c)

Only for optical drives

d)

Requires IDE cables

10.

Which memory type can detect multi-bit errors and correct single-bit errors?

a)

Non-parity

b)

Parity

c)

ECC

d)

SRAM

11.

The fastest cache used closest to the CPU core is typically:

a)

DRAM

b)

SRAM (cache)

c)

GDDR

12.

Which statement best distinguishes an adapter from a converter?

a)

Adapters change signals; converters only change shapes

b)

Adapters physically connect different formats; converters also translate signals

c)

Converters are passive; adapters are active

d)

They are identical

13.

Which legacy analog video port is commonly the oldest still seen on PCs?

a)

DisplayPort

b)

HDMI

c)

VGA

d)

DVI-D

14.

In a traditional chipset design, which component managed high-speed access to RAM and video?

a)

Southbridge

b)

Northbridge

c)

Super I/O

d)

TPM

15.

Q15. Select the motherboard form factor from the options below:

a)

ATX

b)

USB

c)

HDMI

d)

DDR4

16.

Which module type is commonly used in laptops?

a)

SIMM

b)

DIMM

c)

SODIMM

d)

DIP

17.

People generally begin to feel an ESD shock at approximately:

a)

30 V

b)

300 V

c)

3,000 V

d)

30,000 V

18.

Which two PS/2 port colors historically mapped to keyboard and mouse?

a)

Blue/pink

b)

Purple/green

c)

Black/yellow

d)

Orange/white

19.

Which storage technology uses magnetized domains to represent bits?

a)

SSD

b)

HDD

c)

NVMe

d)

UFS

20.

Which voltage rail primarily powers motors and cooling fans?

a)

1.8 V

b)

3.3 V

c)

5 V

d)

12 V

21.

What hardware prevents the motherboard from shorting against the case?

a)

I/O shield

b)

Standoffs

c)

Thermal pads

d)

Zip ties

22.

When installing a CPU, what must be applied between the CPU heat spreader and the heat sink?

a)

Thermal compound

b)

Dielectric grease

c)

Thread locker

d)

Isopropyl alcohol

23.

Which action confirms a RAM module is fully seated?

a)

Module sits flush but latches open

b)

Press until latches click closed

c)

Tighten two screws

d)

Add thermal pads

24.

For airflow, when installing multiple 3.5" drives, it is recommended to:

a)

Pack them tightly

b)

Leave space between drives

c)

Install upside-down

d)

Use IDE cables

25.

Front-panel internal USB cables commonly connect to headers with how many pins?

a)

4 or 5

b)

7

c)

9 or 10

d)

12

26.

A newly built PC’s HDD LED doesn’t light. After power off and unplugging, the most likely fix is to:

a)

Reverse the LED connector orientation

b)

Replace the LED

c)

Replace the motherboard

d)

Replace the power supply

27.

Many modern GPUs require which extra connection from the power supply?

a)

SATA power

b)

6- or 8-pin PCIe power

c)

Molex to Berg

d)

USB-C PD

28.

Which statement about SATA vs eSATA cables is correct?

a)

They are identical and interchangeable

b)

eSATA is only for optical drives

c)

They are similar but not interchangeable

d)

SATA is slower than IDE

29.

Which connector provides supplemental power to the CPU socket on the motherboard?

a)

24-pin ATX

b)

4/8-pin EPS/CPU power

c)

SATA power

d)

PCIe power

30.

Which build tip helps align components before final tightening?

a)

Tighten the first screw fully

b)

Hand-tighten all screws first

c)

Use thread locker

d)

Only install two screws

31.

Case fans should be oriented to:

a)

Blow hot air into the PSU

b)

Move cooler air in and heat out

c)

Blow in only

d)

Blow out only

32.

When selecting a replacement motherboard, which is LEAST relevant?

a)

CPU/socket/chipset compatibility

b)

RAM and expansion slots

c)

Power connectors and case fit

d)

Printer driver availability

33.

If the FSB is 400 MHz and CPU core runs 3,200 MHz, the multiplier is:

a)

4×

b)

6×

c)

8×

34.

Which memory type is typically used in servers for large RAM capacities?

a)

Unbuffered

b)

Buffered/registered

c)

VRAM

d)

EEPROM

35.

What aids correct placement of cables on the tiny system panel connector?

a)

Printed labels on the motherboard

b)

BIOS setup screen

c)

PSU switch

d)

Windows Device Manager

36.

How is ‘pin 1’ often indicated on front-panel connectors?

a)

Red wire only

b)

Arrow on the plug and '+' on LED pins

c)

Triangular bracket

d)

It’s always the bottom-left pin

37.

When selecting a power supply for a computer, which of the following is the best practice?

a)

Match exact current load with no headroom

b)

Choose wattage with headroom for future upgrades

c)

Use the cheapest available unit

d)

Ignore connector count

38.

Completing assembly typically ends with:

a)

Flashing the BIOS

b)

Closing side panel and connecting external cables

c)

Installing GPU first

d)

Formatting the drive

39.

To connect to a wired network you should attach the cable to:

a)

RJ-11

b)

RJ-45 Ethernet port

c)

VGA

d)

eSATA

40.

Which device reads SD/microSD/CompactFlash cards?

a)

Optical drive

b)

Media card reader

c)

Floppy drive

d)

Tape drive

41.

Secure Boot in UEFI helps ensure that:

a)

RAM runs at rated speed

b)

Only trusted OS bootloaders are executed

c)

CPU temperatures stay low

d)

SSDs use NVMe

42.

A PC that loses its date/time each shutdown likely has a failing:

a)

PSU fan

b)

CMOS battery

c)

GPU

d)

NIC

43.

Which device provides the best protection during brownouts/blackouts?

a)

Surge protector

b)

UPS

c)

SPS

d)

Power strip

44.

A sudden short-duration increase well above normal line voltage is called a:

a)

Brownout

b)

Spike

c)

Noise

d)

Blackout

45.

Which CPU feature allows multiple threads to execute on one core?

a)

Hyper-Threading

b)

HyperTransport

c)

Virtualization

d)

Throttling

46.

Which technology is an AMD high-speed interconnect (historically CPU–northbridge)?

a)

Hyper-Threading

b)

HyperTransport

c)

VT-x

d)

SSE2

47.

CPU virtualization support enables:

a)

Faster RAM installs

b)

Multiple OSes to run in parallel on VMs

c)

Lower power consumption always

d)

BIOS password recovery

48.

Which action can permanently damage a CPU and is NOT recommended?

(a)  

49.

Which RAID level provides mirroring of data across drives?

a)

RAID 0

b)

RAID 1

c)

RAID 5

d)

RAID 6

50.

Which RAID level stripes data with single-disk parity for fault tolerance?

a)

RAID 0

b)

RAID 1

c)

RAID 5

d)

JBOD

51.

Which connector terminates UTP for Ethernet?

a)

RJ-45

b)

RJ-11

c)

BNC

d)

F-type

52.

The coax type typically used for high-bandwidth Internet/cable TV feeds is:

a)

RG-6

b)

RG-59

c)

RG-11

d)

RG-8

53.

Which cable type is heavier gauge with better shielding for high-frequency applications?

a)

RG-59

b)

RG-6

c)

Twinax

d)

STP

54.

Which display term identifies the best resolution for a specific monitor panel?

a)

Aspect ratio

b)

Native resolution

c)

Refresh rate

d)

Response time

55.

Monitor brightness is measured in:

a)

Hertz (Hz)

b)

Candela per square meter (cd/m²)

c)

Watts (W)

d)

Volts (V)

56.

Refresh rate is measured in:

a)

Hertz (Hz)

b)

Frames (F)

c)

Lumens (Lm)

d)

Bytes (B)

57.

Full HD (FHD/1080p) corresponds to:

a)

1280×720

b)

1920×1080

c)

2560×1440

d)

3840×2160

58.

Which port was designed to replace VGA/DVI for PC monitors and also carries audio?

a)

HDMI

b)

DisplayPort

c)

DVI-D

d)

VGA

59.

Adding multiple monitors primarily allows you to:

a)

Increase CPU speed

b)

Expand desktop space or mirror display

c)

Increase RAM capacity

d)

Lower GPU temps

60.

Which connector is commonly used for external SATA devices?

a)

SATA

b)

eSATA

c)

IDE

61.

Which environment needs more frequent preventive maintenance?

a)

Clean office

b)

Climate-controlled lab

c)

Dusty construction site

d)

Library

62.

When cleaning the exterior case you should:

a)

Spray cleaner directly on the case

b)

Apply cleaner to a cloth, then wipe

c)

Use compressed air only

d)

Use water

63.

Why is interior dust removal critical?

a)

Dust improves conductivity

b)

Dust reduces airflow and cooling

c)

Dust absorbs shocks

d)

Dust protects components

64.

Which item is NOT on a basic internal inspection checklist?

a)

CPU heat sink/fan

b)

RAM modules

65.

Software maintenance should include:

a)

Ignoring driver updates

b)

Removing unused apps, updating OS, AV scans

c)

Disabling security patches

d)

Skipping virus definition updates

66.

What is the FIRST step in the six-step troubleshooting process?

a)

Establish a theory

b)

Identify the problem

c)

Test the theory

d)

Document findings

67.

After establishing a theory, the next step is to:

a)

Document findings

b)

Test the theory

c)

Replace the motherboard

d)

Format the drive

68.

After implementing a fix, you should:

a)

Test the system to ensure the fix works

b)

Ship the PC immediately

c)

Ignore further testing

d)

Remove all previous backups

69.

The final troubleshooting step is to:

a)

Reboot twice

b)

Document findings, actions, outcomes

c)

Run disk defrag

d)

Update GPU drivers

70.

Common PSU problems are often due to:

a)

Loose connections or inadequate wattage

b)

Faulty keyboard

c)

Wrong browser

d)

RAID level

71.

A PC repeatedly forgets BIOS settings. Likely cause?

a)

GPU throttling

b)

Weak CMOS battery

c)

Damaged USB header

d)

Outdated printer driver

72.

A newly installed HDD isn’t detected. What is the MOST likely cause?

a)

Loose or disconnected data cable

b)

Faulty power supply

c)

Incorrect file system format

d)

Overheating of the HDD

73.

A display shows no signal intermittently. Common causes include:

a)

Loose video cable or corrupted driver

b)

Low microphone volume

c)

Wrong keyboard layout

d)

Missing printer tray

74.

Which personal reference tool helps avoid repeating mistakes?

a)

Repair journal with notes/history

b)

Wallpaper library

c)

Screenshot folder

d)

Keyboard layout list

75.

Which Internet resource is most authoritative for hardware updates?

a)

Random forum post

b)

Manufacturer FAQs and manuals

c)

Social media poll

d)

Video comments