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Mobile Devices 1 > Mock Exam 90 > Flashcards

Mock Exam 90 Flashcards

1
Q

What is the purpose of airplane mode on mobile devices?

A

Disables wireless communication including cellular, Wi-Fi, and Bluetooth.

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2
Q

What is the most common type of mobile device battery?

A

Lithium-ion (Li-ion).

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3
Q

What is the function of a gyroscope in a smartphone?

A

Detects orientation and supports motion-based features.

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4
Q

What is the difference between IMEI and IMSI?

A

IMEI identifies the device, IMSI identifies the subscriber.

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5
Q

What is the purpose of a SIM card in a mobile phone?

A

Stores subscriber information and enables cellular communication.

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6
Q

What is the purpose of DHCP?

A

Dynamically assigns IP addresses to devices on a network.

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7
Q

What is the range of private IP addresses for Class A networks?

A

10.0.0.0 to 10.255.255.255.

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8
Q

What does DNS stand for, and what is its purpose?

A

Domain Name System; translates domain names into IP addresses.

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9
Q

What is the function of a subnet mask?

A

Defines the network and host portions of an IP address.

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10
Q

What is the maximum speed of Cat6 Ethernet cable?

A

10 Gbps over short distances.

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11
Q

What is the primary function of a motherboard?

A

To connect and allow communication between computer components.

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12
Q

What is the purpose of thermal paste?

A

Improves heat transfer between the CPU and the heatsink.

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13
Q

What type of memory is used in laptops?

A

SO-DIMM (Small Outline Dual In-line Memory Module).

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14
Q

What is the function of a power supply unit (PSU)?

A

Converts AC power to DC power for the computer.

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15
Q

What is the difference between HDD and SSD?

A

HDD uses spinning disks; SSD uses flash memory for faster performance.

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16
Q

What is the primary purpose of virtualization?

A

To run multiple operating systems on a single physical machine.

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17
Q

What is IaaS in cloud computing?

A

Infrastructure as a Service; provides virtualized computing resources.

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18
Q

What is the difference between private and public clouds?

A

Private clouds are dedicated to one organization; public clouds are shared among multiple users.

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19
Q

What is the purpose of a hypervisor?

A

Manages virtual machines on a host system.

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20
Q

What is the main advantage of cloud storage?

A

Access files from any device with internet connectivity.

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21
Q

What should you do if a laptop screen is dim?

A

Check the brightness settings and test the display with an external monitor.

22
Q

What is a common cause of a paper jam in printers?

A

Misaligned or overloaded paper in the tray.

23
Q

What does the ping command test?

A

Connectivity to a specific IP address or hostname.

24
Q

What tool is used to test the functionality of Ethernet cables?

A

Cable tester or continuity tester.

25
Q

What is the purpose of Safe Mode in Windows?

A

Boots the system with minimal drivers to troubleshoot issues.

26
Q

What is the function of a firewall?

A

Monitors and controls incoming and outgoing network traffic.

27
Q

What is the purpose of two-factor authentication?

A

Enhances security by requiring two forms of verification.

28
Q

What is a strong password policy?

A

Includes uppercase, lowercase, numbers, and special characters.

29
Q

What does antivirus software do?

A

Detects and removes malware from a system.

30
Q

What is the purpose of file permissions?

A

Restricts access to files and directories based on user roles.

31
Q

What is the function of the task manager in Windows?

A

Monitors running processes and system performance.

32
Q

What is the purpose of a system restore?

A

Reverts the computer to a previous state to fix issues.

33
Q

What does the command ipconfig display?

A

Shows IP address configuration on a Windows system.

34
Q

What is the difference between FAT32 and NTFS file systems?

A

NTFS supports larger files and permissions; FAT32 does not.

35
Q

What is the purpose of a recovery partition?

A

Contains tools to restore the system to factory settings.

36
Q

What is a common cause of slow application performance?

A

Low system resources such as RAM or CPU usage.

37
Q

What should you do if a program is unresponsive?

A

Force close it using Task Manager and restart it.

38
Q

What is the purpose of application logs?

A

Records information about application events and errors.

39
Q

What should you check if a system cannot connect to the internet?

A

Verify network settings and test with another device.

40
Q

What does the term ‘blue screen of death’ (BSOD) refer to?

A

A critical Windows error that requires a system restart.

41
Q

What is the maximum length for a USB cable before signal loss?

A

5 meters for USB 2.0.

42
Q

What type of connector is used for Thunderbolt 3?

A

USB-C connector.

43
Q

What is the purpose of a UPS?

A

Provides backup power during electrical outages.

44
Q

What is the maximum resolution supported by HDMI 2.1?

A

Up to 10K resolution.

45
Q

What is the difference between single-mode and multimode fiber optic cables?

A

Single-mode is for long distances; multimode is for short distances.

46
Q

What is the role of a patch panel in networking?

A

Organizes and connects network cables in a central location.

47
Q

What is the default gateway in networking?

A

The device that routes traffic from a local network to other networks.

48
Q

What is the purpose of a NAS device?

A

Provides network-attached storage for file sharing.

49
Q

What does the tracert command do?

A

Shows the path packets take to a destination.

50
Q

What is the function of the POST process during boot?

A

Performs hardware checks before loading the operating system.

Mobile Devices 1 (37 decks)

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