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WorksheetsTech+ Unit 1 Review 02
Total questions: 60
Worksheet time: 33mins
What is the binary equivalent of the decimal number 142?
10001110
10101001
11100100
10010010
What is the hexadecimal representation of 142 in decimal?
0xA2
0x8E
0x91
0xEE
One byte consists of:
2 bits
4 bits
8 bits
16 bits
The hexadecimal digit A equals what in decimal?
(a)
How many ASCII characters exist?
64
128
256
512
How many bits are used for one ASCII character?
4 bits
8 bits
16 bits
32 bits
Unicode (UTF-8) can use up to how many bytes per character?
1
2
3
4
ASCII is a subset of:
UTF-16
Unicode (UTF-8)
EBCDIC
Morse code
The hexadecimal value 0x41 represents which ASCII character?
B
C
A
D
How many hexadecimal characters are needed to represent one ASCII byte?
1
2
4
8
What is the decimal value of hexadecimal 0x76?
116
118
126
128
The binary number 11000011 equals what in decimal?
193
195
200
255
What is the primary advantage of Unicode over ASCII?
It uses fewer bits
It supports only English
It can represent many world languages and emojis
In binary, each bit represents:
A decimal 10
A hexadecimal 16
An on/off state
A storage unit of 4 bytes
The ASCII code for lowercase 'a' is:
41
61
65
97
The four main functions of a computer are:
Input, Output, Storage, Processing
Display, Input, Security, Power
Storage, Networking, Power, Sound
Cooling, Power, Data, Video
An HDD stores data using:
Electrical charges
Flash memory
Magnetic bits on spinning platters
Optical lasers
The process of destroying an HDD with a strong magnet is called:
Defragmentation
Degaussing
Formatting
Encryption
HDD speed is measured in:
Mbps
GHz
RPM
FPS
Which drive is fastest for data access?
HDD
SSD
M.2 NVMe
DVD
SSDs store data using:
Magnets
Flash memory
Optical discs
Transistors on spinning disks
The PSU in a computer stands for:
Power Source Unit
Power Supply Unit
Processing System Unit
Peripheral Support Unit
SATA III is used for:
Network connections
Power supply
Data transfer between drives and motherboard
Connecting monitors
PATA is another name for:
IDE
NVMe
SCSI
PCI
DAS stands for:
Data Access Service
Direct Attached Storage
Disk Array System
Device Access Service
26. NAS stands for:
Network Attached Storage
New Access Server
Non-Active Storage
Network Array Setup
Which type of memory is volatile?
HDD
SSD
RAM
ROM
Which type of memory retains data after power loss?
RAM
HDD
Cache
Register
The fastest memory in a computer is:
Dynamic RAM
Static RAM (CPU cache)
Hard drive
Virtual memory
SODIMM memory modules are found in:
Desktops
Laptops
Servers only
External hard drives
What is the first process when a computer powers on?
BIOS loads the OS
POST
Bootloader starts
CMOS initializes
The instructions for the POST process are stored in:
RAM
BIOS ROM
CMOS battery
Hard drive
BIOS stands for:
Basic Input Output System
Binary Input Output Sequence
Base Integrated Output Software
Boot Initialization Operating System
34. UEFI stands for:
Unified Extended File Interface
Unified Extensible Firmware Interface
Universal Embedded Firmware Input
Universal Environment Firmware Integration
What does CMOS store?
Which key is often used to enter BIOS setup?
F1
F2
F5
F12
The small battery on the motherboard maintains:
GPU settings
CMOS memory
RAM contents
SSD power
The Master Boot Record (MBR) occupies how much space?
128 bytes
256 bytes
512 bytes
1024 bytes
The BIOS primarily communicates with:
Operating system only
Hardware components
Network servers
User applications
Which is NOT a bootable device?
Hard drive
USB drive
Network
Monitor
Changes made in BIOS are saved to:
ROM
CMOS
Hard drive
Cache
What is the purpose of POST?
To load Windows
To check hardware health
To update the BIOS
To erase old data
UEFI is preferred over BIOS because it:
Uses text-only menus
Supports mouse and larger disks
Is slower but more secure
Lacks compatibility
Which of the following is an example of firmware?
Windows
BIOS
Microsoft Word
What is an .iso file?
A document file
A compressed image
An exact copy of CD/DVD data
A BIOS configuration file
The main function of an Operating System (OS) is to:
Design websites
Manage hardware and software resources
Power the computer
Store documents
The core part of an OS that manages communication between hardware and software is the:
Shell
Kernel
Cache
BIOS
The Windows kernel is called:
WinCore
NT Kernel
X86 Base
A program that creates virtual computers within a computer is called a:
Compiler
Emulator
Hypervisor
BIOS
A Type I hypervisor is also known as:
Software-based hypervisor
Bare-metal hypervisor
Hosted hypervisor
Virtualized OS
Which of the following is a Type II hypervisor?
VMware Player
vCenter
ESXi
Hyper-V Server
An embedded OS is:
Installed on desktops
Stored in a device’s ROM
Used for virtualization
Cloud-hosted
The term firmware refers to:
Hardware replacement
Software installed on a device’s chip
Temporary software
Mobile apps
IoT stands for:
Internet of Terminals
Internet of Things
Internal Operating Technology
Interconnected Terminals
Why are IoT devices often vulnerable to hacking?
They lack user interfaces
They are expensive
Their firmware is hard to update
They use secure protocols
The OS component that assigns unique process IDs (PIDs) is the:
BIOS
Task Manager
Kernel
CPU
Which OS type is used by everyday users on PCs?
Server OS
Desktop OS
Virtual OS
Embedded OS
What is a “distribution” in Linux?
A user interface
A software driver
A version or variant of Linux
A hardware model
Firmware stored in a ROM chip is called:
Kernel
Application
Embedded OS
Cloudware
Which type of hypervisor is more efficient and faster?
Type II
Type I
Both are equal
None
