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Practice Test 3 CompTIA A+ (Core 1)

Total questions: 140

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

A laptop display is visible only at extreme angles and colors look washed out. Which panel type is it most likely not using?

a)

TN

b)

IPS

c)

VA

d)

TFT with poor backlight

2.

A modern laptop with USB-C Power Delivery can accept up to 65 W for charging. What else can that same cable carry simultaneously if supported?

a)

Only DC power

b)

Power + DisplayPort video + USB data

c)

Power + analog VGA

d)

Power + PS/2

3.

A user wants to connect a phone to a car stereo for hands-free calls and audio streaming. Which profile set is required?

a)

A2DP + HFP

b)

PAN + HID

c)

IRDA + OBEX

d)

802.11ac + WEP

4.

An iPad needs to mirror its screen to an Apple TV over the same LAN. Which two technologies partner under the hood?

a)

NFC + WPA

b)

Bluetooth + AirDrop

c)

mDNS/Bonjour + AirPlay

d)

L2TP + IPsec

5.

A laptop with a smart card reader is used for two-factor login. What does the card primarily store?

a)

SIM profiles

b)

Cryptographic certificates/keys

c)

iCloud credentials

d)

BIOS passwords

6.

A user complains their Android phone’s photos no longer sync to the cloud on cellular, only on Wi‑Fi. Which setting likely changed?

a)

VPN split tunneling

b)

Battery saver

c)

Upload on Wi‑Fi only

d)

NFC payments

7.

A stylus supports tilt and 4096 levels. What display hardware must the device include?

a)

Resistive touch grid

b)

Active digitizer layer

c)

Infrared touch frame

d)

Only capacitive glass

8.

A laptop has one M.2 slot that supports SATA or NVMe. Which keying will most likely be present?

a)

B key only

b)

M key only

c)

B+M key

d)

A key

9.

Which mobile connection allows a laptop to share a phone’s internet using a USB cable?

a)

Wi‑Fi hotspot

b)

Bluetooth PAN

c)

USB tethering

d)

NFC pairing

10.

A smartphone supports eSIM + physical SIM. What practical use does this enable?

a)

SIMless operation only

b)

Two active carriers/profiles for travel and work

c)

Faster Wi‑Fi roaming

d)

More internal storage

11.

A user reports “Storage almost full” on iOS. Which action frees the most space with least data loss?

a)

Erase all content

b)

Enable “Offload Unused Apps”

c)

Disable iCloud

d)

Turn on Airplane Mode

12.

On a thin ultraportable, the RAM is LPDDR5 and soldered. What upgrade path exists?

a)

Replace SO‑DIMMs

b)

Add a second SO‑DIMM

c)

None—capacity is fixed

d)

Upgrade in BIOS

13.

Which wireless standard adds the 6 GHz band in supported regions?

a)

802.11ac (Wi‑Fi 5)

b)

802.11ax (Wi‑Fi 6E)

c)

802.11n (Wi‑Fi 4)

d)

802.11g

14.

What feature allows contactless payments at a retail terminal?

a)

QR codes only

b)

NFC secure element/tokenization

c)

Bluetooth BR/EDR only

d)

Wi‑Fi Direct

15.

A laptop shows “No boot device found” after a repair. External USB boots fine. What laptop‑specific step might have been missed?

a)

Enable AirDrop

b)

Re‑seat or re‑enable the internal drive in BIOS/UEFI

c)

Lower screen brightness

d)

Disable Wi‑Fi

16.

When a 2‑in‑1 is folded into tablet mode, which OS behavior is expected?

a)

Keyboard/trackpad disabled automatically

b)

Brightness locked at 100%

c)

CPU underclocked permanently

d)

Wi‑Fi disabled

17.

A phone repeatedly disconnects from a car’s infotainment system using Android Auto (wired). What is the most likely culprit?

a)

Weak cellular coverage

b)

Low‑quality/charge‑only USB cable

c)

Mismatched Bluetooth code page

d)

Outdated GNSS almanac

18.

A user wants to quickly share large video files phone→phone without internet. Best option?

a)

Email attachments

b)

Wi‑Fi Direct/AirDrop nearby sharing

c)

SMS/MMS

d)

POP3

19.

Which device operates at Layer 2 and builds a MAC address table?

a)

Router

b)

Switch

c)

Hub

d)

Firewall

20.

A network has VLAN 10 for users and VLAN 20 for VoIP. What allows both across a single uplink?

a)

RSTP

b)

802.1Q trunk

c)

LACP hashing

d)

PoE+

21.

Your ISP provides a /29. How many usable IPv4 addresses do you get?

a)

6

b)

8

c)

14

d)

30

22.

Which is a link‑local IPv6 address format?

a)

fe80::/10

b)

fc00::/7

c)

2001:db8::/32

d)

ff00::/8

23.

Which DNS record type indicates the authoritative name server for a zone?

a)

A

b)

MX

c)

NS

d)

CNAME

24.

A user can ping by IP on the internet but not by name. First best step?

a)

Replace NIC

b)

Check DNS server settings and try nslookup

c)

Rebuild BCD

d)

Clear printer spooler

25.

What is a characteristic symptom of a DHCP scope at capacity?

a)

Clients get 169.254.x.x

b)

Duplicate MAC addresses

c)

Switch port err‑disable

d)

High CPU on the DHCP server only

26.

Which Wi‑Fi security method should not be used in 2025 if avoidable?

a)

WPA2‑AES

b)

WPA3‑Personal

c)

Open with captive portal for guest

d)

WEP

27.

Which physical cable type is best for long single-mode fiber runs?

a)

RG-6

b)

Cat 6a

c)

OS2 with LC connectors

d)

Multimode OM3 with ST

28.

You need to copy files between two PCs on different subnets securely. Which protocol is best?

a)

FTP

b)

TFTP

c)

SFTP

d)

Telnet

29.

A SOHO router’s DMZ feature is enabled for a game console. What does this do?

a)

Blocks all inbound traffic

b)

Forwards unsolicited inbound traffic to that host

c)

Creates a site-to-site VPN

d)

Enables QoS by default

30.

Which 2.4 GHz channel plan minimizes overlap (20 MHz)?

a)

1, 6, 11

b)

2, 5, 8

c)

3, 6, 9

d)

4, 7, 10

31.

Which port is default for POP3S (encrypted POP3)?

a)

110

b)

995

c)

143

d)

993

32.

A cable internet installation terminates at the customer premise with what connector to the modem?

a)

RJ-11

b)

F-type coax

c)

LC duplex

d)

BNC T

33.

Which feature allows power to access points over Ethernet cables?

a)

QoS

b)

PoE/PoE+

c)

PortFast

d)

TACACS+

34.

A user on Wi-Fi complains of slow performance during lunch when many people are present. What common factor explains this?

a)

Increased SNR

b)

Higher contention and airtime utilization

c)

Lower interference

d)

Higher transmit power

35.

What tool is best for verifying pair order and split pairs in a copper cable?

a)

OTDR

b)

Cable certifier/advanced cable tester

c)

Tone and probe

d)

Multimeter only

36.

Which record points a subdomain to a different canonical name?

a)

MX

b)

CNAME

c)

TXT

d)

SRV

37.

Which motherboard form factor is smallest?

a)

ATX

b)

microATX

c)

Mini-ITX

d)

E-ATX

38.

A PSU lists 80 PLUS Gold. What does that indicate?

a)

Peak wattage

b)

Efficiency level across load ranges

c)

GPU compatibility

d)

Number of rails

39.

Which connector provides additional GPU power?

a)

4-pin Molex

b)

6/8-pin PCIe power

c)

8-pin EPS12V (CPU)

d)

24-pin ATX main

40.

Which storage has lowest latency for random I/O?

a)

HDD 7200 RPM

b)

SATA SSD

c)

NVMe (PCIe) SSD

d)

USB flash drive

41.

A user needs fault tolerance with two drives and the simplest configuration. Choose:

a)

RAID 0

b)

RAID 1

c)

RAID 5

d)

RAID 10

42.

In a laser printer, what does the transfer step do?

a)

Heats toner

b)

Places charge on drum

c)

Moves toner from drum to paper

d)

Cleans residual toner

43.

Which port provides digital video + audio and supports ARC/eARC on TVs?

a)

VGA

b)

DVI-D

c)

HDMI

d)

DisplayPort mini

44.

A thermal printer produces very light output. First action?

a)

Replace toner

b)

Use correct thermal paper and clean the print head

c)

Replace the drum

d)

Calibrate color profiles

45.

Which M.2 code indicates PCIe x4 (NVMe) support on the device?

a)

B key

b)

M key

c)

E key

d)

A key

46.

A new build won’t power on. You notice the 24-pin ATX isn’t fully seated. What symptom matches?

a)

Fans spin but no video

b)

No power at all

c)

Hard drive clicks only

d)

Beeps continuously

47.

Which expansion slot is used by a high-end capture card requiring moderate bandwidth?

a)

PCIe x1 or x4

b)

ISA

c)

AGP

d)

AMR

48.

Which cable type is code-compliant for air-handling spaces?

a)

PVC jacket (CM)

b)

Riser (CMR)

c)

Plenum-rated (CMP)

d)

Outdoor gel-filled

49.

A user asks for a workstation tuned for CAD with 3D rendering. Best upgrade priority?

a)

High-end gaming audio

b)

ECC RAM only

c)

Multi-core CPU + workstation GPU + lots of RAM

d)

Extra SATA ports

50.

Which connector is used by SATA power?

a)

7-pin L-shaped

b)

15-pin flat

c)

6-pin PCIe

d)

8-pin EPS

51.

A photo printer needs borderless prints with high color accuracy. Which technology fits best?

a)

Dot-matrix impact

b)

Dye-sublimation or photo-grade inkjet

c)

Thermal receipt

d)

Line printer

52.

Which battery chemistry is standard in modern laptops?

a)

NiCd

b)

NiMH

c)

Li-ion

d)

Lead-acid

53.

A user adds a second identical RAM module but dual-channel doesn’t engage. What’s the likely oversight?

a)

Mixed DDR generations

b)

Slots not matched as per motherboard color coding

c)

ECC vs non-ECC mix

d)

RAM voltage too low

54.

Which device enables one keyboard, one mouse, and one monitor to control multiple PCs?

a)

NAS

b)

KVM switch

c)

Docking station

d)

Patch panel

55.

A Type 1 hypervisor runs:

a)

On bare metal

b)

Inside a VM

c)

As an app in Windows only

d)

Only on ARM

56.

Which VM networking mode shares the host’s IP but provides NAT to the guest?

a)

Host-only

b)

NAT

c)

Bridged

d)

Promiscuous

57.

Which cloud model delivers complete apps (email, CRM) to end users?

a)

IaaS

b)

PaaS

c)

SaaS

d)

FaaS

58.

Which cloud characteristic refers to on-demand self-service?

a)

Capacity planning

b)

Users provision resources without human interaction

c)

Single-tenant hardware

d)

Tape rotation

59.

Spinning up many VMs without lifecycle control or ownership tracking is:

a)

Cloud bursting

b)

VM sprawl

c)

Blue/green deployment

d)

DRaaS

60.

What is the best safety net before patching a critical VM?

a)

Export as CSV

b)

Take a snapshot and verify free space

c)

Increase vCPU

d)

Power off for 24 hours

61.

A cloud provider charges per GB and per hour of VM runtime. This is:

a)

Rapid elasticity

b)

Resource pooling

c)

Measured service

d)

Multitenancy

62.

In IaaS, which responsibility lies with the customer?

a)

Physical host patching

b)

Hypervisor upgrades

c)

Guest OS hardening and application patches

d)

Data center power

63.

Containers differ from VMs in that containers:

a)

Include a full guest OS

b)

Share the host kernel and package only what’s needed

c)

Require VT-x disabled

d)

Replace all security controls

64.

Which storage feature allows instant clones and “thin” space use?

a)

Copy-on-write snapshots

b)

Tape libraries

c)

Optical jukebox

d)

JBOD only

65.

A company uses on-prem for databases and public cloud for web front ends with VPN between. What model is this?

a)

Community cloud

b)

Hybrid cloud

c)

Private cloud only

d)

Multi-tenant private

66.

Which VM resource usually becomes the bottleneck first on a small lab host?

a)

RAM

b)

Optical drive

c)

Keyboard

d)

Serial ports

67.

A developer needs managed runtime + database without server admin. Choose:

a)

IaaS

b)

PaaS

c)

SaaS

d)

Colo

68.

You need to run nested VMs. What host support is required?

a)

CPU virtualization extensions enabled (VT-x/AMD-V) and nested virt support

b)

Disable virtualization in BIOS

c)

GPU passthrough only

d)

Extra NICs

69.

During a regional outage, your cloud app fails over automatically to a second region. What concept is this?

a)

Elastic IP

b)

Multi-region redundancy

c)

DHCP relay

d)

VLAN pooling

70.

Which option most reduces cloud cost for non-critical batch jobs?

a)

Always-on large instances

b)

Spot/preemptible instances with checkpoints

c)

Dedicated hosts

d)

Overprovision for headroom

71.

Which VM disk type expands as data is written instead of using the full size up front?

a)

Thick eager zeroed

b)

Thick lazy zeroed

c)

Thin-provisioned

d)

Raw LUN

72.

A desktop powers on with fans, but there are continuous memory beeps. First step?

a)

Reinstall Windows

b)

Reseat RAM and try one stick in the recommended slot

c)

Replace PSU

d)

Update GPU driver

73.

After a move, a PC shows no link lights on Ethernet. Which is the first check?

a)

Swap to a known-good cable/port

b)

Clear DNS cache

c)

Rebuild TCP stack

d)

Replace the motherboard

74.

Laptop shuts down suddenly when the power adapter is nudged; battery icon shows “Not charging.” Most likely?

a)

Display driver issue

b)

Damaged DC-in jack or adapter cable

c)

DNS problem

d)

Keyboard failure

75.

A user reports vertical streaks on laser prints in the same positions on each page. Likely cause?

a)

Dirty transfer corona or damaged drum

b)

Wrong paper size

c)

Empty waste toner bottle on inkjet

d)

Low fuser temperature on inkjet

76.

A PC reboots under GPU load. Temperatures are normal. What else should you check next?

a)

DHCP lease time

b)

PCIe power connectors and PSU wattage/rails

c)

Wi-Fi channel width

d)

Printer driver

77.

A workstation shows CPU temps of 98°C at idle. Which step is most effective?

a)

Lower screen resolution

b)

Reseat cooler, reapply thermal paste, and verify fan operation

c)

Change to DHCP

d)

Reinstall GPU drivers

78.

A user cannot access a share by name but can by IP. Ping to hostname returns a different IP than expected. What’s the fix?

a)

Replace switch

b)

Correct DNS entry/flush cache

c)

Disable IPv6

d)

Increase MTU

79.

A new Cat 6 run fails certification due to split pairs. Where is the error most likely?

a)

Patch panel labeling

b)

One or both RJ-45 terminations

c)

Switch port speed

d)

DHCP scope

80.

Users on one floor get 169.254.x.x addresses. The switch and gateway are up. Next check?

a)

DHCP relay (IP helper) on that VLAN

b)

DNS TXT records

c)

VLAN MTU

d)

Printer SNMP

81.

A monitor displays “Out of range” after setting 4K@120 Hz on an older HDMI link. Quick recovery?

a)

Replace CPU

b)

Boot to Safe Mode/low-res and set a supported resolution/refresh

c)

Rebuild BCD

d)

Clear CMOS battery

82.

A laptop keyboard misses certain keys after a small spill. Trackpad works. What’s the likely remedy?

a)

Replace the keyboard assembly

b)

Reinstall chipset drivers

c)

Replace the HDD

d)

Update firmware for the NIC

83.

Users complain Wi-Fi drops near the break room microwave. Best mitigation?

a)

Increase 2.4 GHz channel width

b)

Move clients/APs to 5/6 GHz bands

c)

Enable WEP

d)

Lower AP transmit power

84.

A printer is pingable but shows Offline in Windows. What first action commonly resolves it?

a)

Delete and reinstall Windows

b)

Restart the Print Spooler and verify the TCP/IP port points to the correct IP

c)

Replace toner

d)

Change VLANs

85.

A PC posts but shows no boot device after adding a second SSD. Which setting likely changed?

a)

DHCP options

b)

Boot order/drive priority in UEFI

c)

Wi-Fi country code

d)

Keyboard layout

86.

A patch panel port is unlabeled. You need to find the matching wall jack. Which tool set?

a)

Loopback plug only

b)

Tone generator and probe

c)

OTDR for copper

d)

Optical power meter

87.

A fiber link shows high attenuation after a rack move. What’s the most common cause?

a)

DNSSEC

b)

Dirty connectors or tight bend radius

c)

Duplex mismatch

d)

DHCP starvation

88.

A PoE AP won’t power from one switch port but works on another. What’s the likely issue?

a)

DNS failure

b)

PoE disabled or non-PoE port

c)

VLAN mismatch

d)

Wrong SSID

89.

After a brief outage, domain logons fail with time skew errors. Quick fix?

a)

Disable DNS

b)

Restore NTP/time service and resync clocks

c)

Change to static IPs

d)

Update GPU firmware

90.

A laptop display is visible only at extreme angles and colors look washed out. Which panel type is it most likely not using?

a)

IPS

b)

TN

c)

VA

d)

OLED

91.

A modern laptop with USB-C Power Delivery can accept up to 65 W for charging. What else can that same cable carry simultaneously if supported?

a)

Power only

b)

Power + USB data

c)

Power + DisplayPort video

d)

Power + DisplayPort video + USB data

92.

A user wants to connect a phone to a car stereo for hands-free calls and audio streaming. Which profile set is required?

a)

A2DP + HFP

b)

HSP only

c)

AVRCP + A2DP

d)

PAN

93.

An iPad needs to mirror its screen to an Apple TV over the same LAN. Which two technologies partner under the hood?

a)

Bluetooth + AirDrop

b)

mDNS/Bonjour + AirPlay

c)

SMB + AirPrint

d)

Wi‑Fi Direct + Miracast

94.

A laptop with a smart card reader is used for two-factor login. What does the card primarily store?

a)

Contact list

b)

Photos

c)

Cryptographic certificates/keys

d)

BIOS passwords

95.

Android photos no longer sync on cellular, only on Wi‑Fi. Which setting likely changed?

a)

Enable background sync

b)

Upload on Wi‑Fi only

c)

Cellular data unlimited

d)

Roaming disabled

96.

A stylus supports tilt and 4096 levels. What display hardware must the device include?

a)

Capacitive touch only

b)

Resistive touch

c)

Active digitizer layer

d)

OLED backlight

97.

A laptop has one M.2 slot that supports SATA or NVMe. Which keying will most likely be present?

a)

B key

b)

M key

c)

B+M key

d)

A key

98.

Which mobile connection allows a laptop to share a phone’s internet using a USB cable?

a)

Bluetooth PAN

b)

Wi‑Fi hotspot

c)

USB tethering

d)

NFC sharing

99.

A smartphone supports eSIM + physical SIM. What practical use does this enable?

a)

Use dual cameras

b)

Two active carriers/profiles

c)

Extra storage

d)

Faster charging

100.

iOS shows “Storage almost full.” Which action frees the most space with least data loss?

a)

Delete Photos

b)

Factory reset

c)

Enable “Offload Unused Apps”

d)

Disable iCloud

101.

On a thin ultraportable, the RAM is LPDDR5 and soldered. What upgrade path exists?

a)

Add SODIMM

b)

Replace motherboard RAM module

c)

None—capacity is fixed

d)

Use external RAM

102.

Which wireless standard adds the 6 GHz band?

a)

802.11ac

b)

802.11ax (Wi‑Fi 6E)

c)

802.11n

d)

802.11ad

103.

What feature allows contactless payments at a retail terminal?

a)

QR code scanning

b)

NFC secure element/tokenization

c)

Bluetooth pairing

d)

EMV chip only

104.

A laptop shows “No boot device found” after a repair. What step might have been missed?

a)

Replace power supply

b)

Re‑seat or re‑enable the internal drive in BIOS/UEFI

c)

Clean the screen

d)

Update antivirus

105.

When a 2‑in‑1 is folded into tablet mode, which OS behavior is expected?

a)

Increase fan speed

b)

Keyboard/trackpad disabled automatically

c)

Enable Safe Mode

d)

Switch to guest account

106.

Android Auto (wired) repeatedly disconnects. Most likely culprit?

a)

Outdated car stereo

b)

Low‑quality/charge‑only USB cable

c)

Incorrect APN

d)

Weak Wi‑Fi signal

107.

Quickly share large video files phone→phone without internet. Best option?

a)

MMS

b)

Wi‑Fi Direct/AirDrop nearby sharing

c)

Upload to social media

d)

Email attachment

108.

Which device operates at Layer 2 and builds a MAC address table?

a)

Router

b)

Switch

c)

Hub

d)

Firewall

109.

VLAN 10 (users) and VLAN 20 (VoIP) across one uplink requires:

a)

Access port

b)

802.1Q trunk

c)

Spanning tree disabled

d)

Link aggregation only

110.

Your ISP provides a /29. How many usable IPv4 addresses?

a)

2

b)

4

c)

6

d)

8

111.

Which is a link‑local IPv6 address format?

a)

2001:db8::/32

b)

fe80::/10

c)

fc00::/7

d)

::1/128

112.

Which DNS record indicates the authoritative name server for a zone?

a)

A

b)

MX

c)

NS

d)

TXT

113.

Ping by IP works, by name fails. First best step?

a)

Replace router

b)

Check DNS server settings and try nslookup

c)

Clear ARP cache

d)

Change subnet mask

114.

Characteristic symptom of a DHCP scope at capacity?

a)

Clients get 10.0.0.x

b)

Clients get 169.254.x.x

c)

Clients get static IP

d)

Clients get duplicate IP

115.

Which Wi‑Fi security method should not be used in 2025 if avoidable?

a)

WPA2‑PSK

b)

WPA3‑SAE

c)

WEP

d)

WPA‑TKIP

116.

Best for long single‑mode fiber runs?

a)

OM3 with SC

b)

OS2 with LC

c)

OM1 with ST

d)

RG6 coax

117.

Secure copy between PCs on different subnets?

a)

FTP

b)

SMB

c)

SFTP

d)

TFTP

118.

SOHO router DMZ feature enabled for a console does what?

a)

Blocks all outbound traffic

b)

Forwards unsolicited inbound traffic to that host

c)

Enables QoS for games

d)

Assigns static IP

119.

2.4 GHz non‑overlapping channel plan (20 MHz)?

a)

1, 6, 11

b)

2, 7, 12

c)

3, 8, 13

d)

4, 9, 14

120.

Default port for POP3S (encrypted POP3)?

a)

110

b)

143

c)

993

d)

995

121.

Cable internet to the modem terminates with what connector?

a)

RJ45

b)

F‑type coax

c)

BNC

d)

LC

122.

Which feature provides power to APs over Ethernet cables?

a)

VLAN tagging

b)

PoE/PoE+

c)

QoS

d)

LACP

123.

Wi‑Fi slows at lunchtime when many users are present. Why?

a)

AP rebooting

b)

Higher contention and airtime utilization

c)

Channel bonded too wide

d)

DHCP leases expiring

124.

Best tool for verifying pair order and split pairs in copper?

a)

Tone generator

b)

Cable certifier/advanced cable tester

c)

Crimp tool

d)

Optical power meter

125.

Which record points a subdomain to a different canonical name?

a)

A

b)

CNAME

c)

MX

d)

PTR

126.

Which motherboard form factor is smallest?

a)

ATX

b)

microATX

c)

Mini‑ITX

d)

E‑ATX

127.

A PSU lists 80 PLUS Gold. What does that indicate?

a)

Output wattage

b)

Efficiency level across load ranges

c)

Modular cabling

d)

Single‑rail design

128.

Which connector provides additional GPU power?

a)

24‑pin ATX

b)

4‑pin Molex

c)

6/8‑pin PCIe power

d)

SATA data

129.

Which storage has lowest latency for random I/O?

a)

7200‑RPM HDD

b)

SATA SSD

c)

NVMe (PCIe) SSD

d)

USB flash drive

130.

Fault tolerance with two drives, simplest configuration:

a)

RAID 0

b)

RAID 1

c)

RAID 5

d)

JBOD

131.

In a laser printer, the transfer step does what?

a)

Heats the fuser

b)

Charges the drum

c)

Moves toner from drum to paper

d)

Cleans the waste bin

132.

Which port provides digital video + audio and supports ARC/eARC on TVs?

a)

VGA

b)

DVI

c)

HDMI

d)

DisplayPort

133.

A thermal printer produces very light output. First action?

a)

Replace fuser

b)

Use correct thermal paper and clean the print head

c)

Update drivers

d)

Increase DPI

134.

Which M.2 code indicates PCIe x4 (NVMe) support on the device?

a)

B key

b)

M key

c)

B+M key

d)

A key

135.

A new build won’t power on; the 24‑pin ATX isn’t fully seated. What symptom matches?

a)

Random reboots

b)

No power at all

c)

No video but fans spin

d)

BSOD only

136.

Which expansion slot is used by a high‑end capture card requiring moderate bandwidth?

a)

PCIe x1 or x4

b)

PCI

c)

AGP

d)

M.2

137.

Which cable type is code‑compliant for air‑handling spaces?

a)

PVC jacket

b)

Riser‑rated (CMR)

c)

Plenum‑rated (CMP)

d)

Armored fiber

138.

Workstation tuned for CAD with 3D rendering—best upgrade priority?

a)

Add Wi‑Fi card

b)

Multi‑core CPU + workstation GPU + lots of RAM

c)

Larger hard drive only

d)

RGB lighting

139.

Which connector is used by SATA power?

a)

7‑pin

b)

15‑pin flat

c)

6‑pin PCIe

d)

4‑pin Molex

140.

Photo printer needs continuous-ton and lab-quality photos. Which tech fits best?

a)

Thermal transfer label printer

b)

Dye‑sublimation

c)

Photo‑grade inkjet

d)

Dot‑matrix