75 of 83 questions · Page 1/2 · Itf Concepts Terminology topic · Answers revealed
Which component of a computer stores data permanently even when the power is turned off?
Correct: SSD is non-volatile storage.
Why this answer
SSDs and HDDs are non-volatile storage; they retain data without power.
A user notices their computer is running slowly and has many applications open. Which TWO hardware components are most likely to impact the speed at which multiple applications can run simultaneously? (Select TWO).
More RAM allows more applications to run concurrently without swapping.
Why this answer
RAM provides working memory for running programs; more RAM allows more programs to run smoothly. CPU speed and cores affect processing. HDD/SSD affect loading times but not simultaneous execution as directly.
GPU is for graphics.
A user wants to permanently delete files from a USB flash drive without any possibility of recovery. Which of the following techniques should be used?
Overwriting ensures original data is no longer recoverable.
Why this answer
Overwriting the data with random patterns ensures the original data cannot be recovered. Quick format only removes the file system index, and deletion marks space as available.
A company wants to run multiple operating systems on a single physical server to maximize resource utilization. Which technology should they use?
Correct.
Why this answer
Virtualization, via a hypervisor, allows multiple VMs (each with its own OS) to run on one physical host.
A technician is evaluating the CPU specifications of two computers. Which THREE factors directly affect the CPU's performance? (Select THREE.)
More cores allow parallel processing.
Why this answer
Clock speed (GHz), number of cores, and cache size directly affect CPU performance. RAM size and PSU wattage do not directly affect CPU speed.
An IT specialist is explaining ASCII and Unicode to a trainee. Which statement accurately describes a difference between ASCII and Unicode?
Unicode supports global scripts; ASCII covers English and basic symbols.
Why this answer
ASCII uses 7 bits and can represent 128 characters. Unicode is a variable-width encoding that supports characters from many languages.
Which type of memory is volatile and loses its data when the computer is turned off?
RAM is volatile.
Why this answer
RAM (Random Access Memory) is volatile and loses data on power loss.
Which of the following best describes the function of a hypervisor?
A hypervisor creates and manages virtual machines.
Why this answer
A hypervisor allows multiple operating systems to run on one physical machine by virtualizing hardware. It does not manage cloud resources directly, nor is it an OS or antivirus.
A systems administrator is configuring a new server and needs to ensure high availability and reliability. Which THREE of the following are characteristics of cloud computing that support high availability? (Select THREE.)
Multiple customers share resources, allowing redundancy across data centers.
Why this answer
Cloud computing provides on-demand self-service, resource pooling, rapid elasticity, measured service, and broad network access. These enable redundancy and automatic scaling for high availability.
A technician needs to convert a decimal IP address octet value of 192 to binary. Which of the following is the correct binary representation?
11000000 is 128 + 64 = 192 in decimal.
Why this answer
192 in binary is 11000000. This can be calculated by subtracting powers of 2: 192 = 128 + 64, so bits 7 and 6 are 1, bits 5-0 are 0.
A user wants to store a file with lossless compression. Which TWO of the following file formats support lossless compression? (Select TWO.)
PNG uses lossless compression.
Why this answer
PNG and ZIP are lossless; JPEG is lossy; MP3 is lossy; BMP is uncompressed.
A computer has 8 GB of RAM. If the operating system and applications are using 3.2 GB, how much RAM is available for other processes?
8 - 3.2 = 4.8 GB.
Why this answer
Available RAM = total - used = 8 GB - 3.2 GB = 4.8 GB.
A network technician needs to perform a bitwise AND operation on two binary numbers: 10110110 and 11001101. What is the result in decimal?
10000100 binary = 128 + 4 = 132.
Why this answer
Perform AND bitwise: 10110110 AND 11001101 = 10000100 (binary) = 132 decimal.
Which of the following is an example of system software?
Linux is an operating system, a type of system software.
Why this answer
System software includes the operating system and utilities that manage hardware. Linux is an operating system, hence system software. Word processor, web browser, and spreadsheet are application software.
Which of the following best describes the role of an operating system?
This describes the core purpose of an OS.
Why this answer
An OS manages hardware resources and provides services for application software. It acts as an intermediary between user and hardware.
A memory address is displayed as 0x1A3F. What is the correct base of this representation?
Correct: 0x denotes hexadecimal.
Why this answer
The prefix 0x indicates hexadecimal (base 16).
An IT professional is explaining to a client the difference between an HDD and an SSD. Which statement best describes a key advantage of an SSD over an HDD?
SSDs are solid-state and withstand shock better.
Why this answer
SSDs use flash memory and have no moving parts, making them faster, more durable, and quieter than HDDs, which use spinning platters and mechanical arms.
A company is considering moving its email system to the cloud and wants to avoid managing the underlying servers and software. Which cloud service model would best suit this need?
SaaS delivers software applications over the internet.
A network engineer is configuring a device and needs to enter a MAC address. Which notational system is typically used for MAC addresses?
MAC addresses are represented in hexadecimal.
Why this answer
MAC addresses are usually represented in hexadecimal (base-16) notation, e.g., 00:1A:2B:3C:4D:5E.
A company is choosing a storage solution for archival data that is rarely accessed. Which TWO characteristics are typically true of HDDs compared to SSDs? (Choose two.)
HDDs have slower access times.
Why this answer
HDDs are generally cheaper per gigabyte and have slower access speeds due to mechanical parts.
Which of the following describes a nibble?
Correct: a nibble is 4 bits.
Why this answer
A nibble is half a byte, or 4 bits.
A technician is troubleshooting a network issue and needs to view the MAC address of a device. Which notational system is the MAC address most likely represented in?
Correct.
Why this answer
MAC addresses are typically represented in hexadecimal (base-16) format, e.g., 00:1A:2B:3C:4D:5E.
Which of the following is the decimal equivalent of the binary number 1101?
Binary 1101 equals decimal 13.
Why this answer
Binary 1101 = 1*8 + 1*4 + 0*2 + 1*1 = 13.
A company wants to run a Linux virtual machine on a Windows host without dual-booting. Which type of software is needed to create and manage the virtual machine?
Correct: a hypervisor manages virtual machines.
Why this answer
A hypervisor (or virtual machine monitor) enables running VMs on a host OS.
A user notices that their computer runs slowly when multiple applications are open simultaneously. Which hardware component is most likely insufficient for the current workload?
RAM provides temporary storage for active programs; insufficient RAM leads to slowdowns.
Why this answer
RAM (Random Access Memory) is volatile memory used to store data for running programs. Insufficient RAM causes the system to use slower storage (paging), slowing performance.
Which of the following is the binary representation of the decimal number 10?
1010 is decimal 10.
Why this answer
Decimal 10 in binary is 1010 (8+2). 1000 is decimal 8, 1100 is 12, 1110 is 14.
A technician is troubleshooting a computer that fails to boot. The technician suspects corrupted firmware. Which component stores the firmware that initializes hardware during boot?
Correct: BIOS/UEFI firmware is stored in ROM.
Why this answer
The BIOS/UEFI firmware is stored in a ROM chip on the motherboard.
A programmer writes a loop that performs a bitwise AND operation between the byte 0b11001100 and the mask 0b00001111. What is the result in decimal?
Correct result.
Why this answer
0b11001100 AND 0b00001111 = 0b00001100 = 12 decimal.
A technician is explaining data representation to a trainee. Which TWO of the following are character encoding standards used in computing? (Select TWO).
ASCII is a 7-bit character encoding standard.
Why this answer
ASCII and Unicode/UTF-8 are both character encoding standards. JPEG is an image format, MP3 is an audio format, and ZIP is a compression format.
A company is planning to adopt cloud computing. Which THREE of the following are benefits of using cloud services compared to on-premises infrastructure? (Select THREE).
Cloud provider handles hardware maintenance.
Why this answer
Cloud benefits include on-demand resource provisioning (scalability), pay-as-you-go (reduced upfront cost), and reduced maintenance. Guaranteed uptime is not absolute (though SLAs exist), and full control is less in cloud.
A digital image is stored in a file that retains all original data without any loss. Later, the file is compressed using a technique that discards some data to reduce file size, but the image quality is lower. Which type of compression was applied?
Lossy compression discards data, reducing quality.
Why this answer
Lossy compression permanently removes data to reduce file size, resulting in quality loss. Lossless compression retains all data. JPEG is a lossy format.
A user is concerned about losing edits to a document if the power fails. Which type of memory is the document most likely stored in while being edited?
Correct.
Why this answer
RAM (Random Access Memory) is volatile; data is lost when power is removed. The document is stored in RAM during active editing.
A technician is troubleshooting a computer that fails to boot. The technician checks the system's low-level software stored on a chip on the motherboard. Which type of software is being inspected?
Firmware (BIOS/UEFI) is stored on a chip and controls initial boot.
Why this answer
Firmware is software embedded in hardware devices, such as BIOS/UEFI on the motherboard, which initializes hardware during boot.
A user is experiencing slow performance and wants to upgrade their computer's RAM. Which TWO factors should they consider when purchasing new RAM? (Choose two.)
Must match motherboard support.
Why this answer
RAM must be compatible with the motherboard's form factor (e.g., DDR4 vs DDR5) and the motherboard must have available slots. Capacity is also a factor, but the question asks for factors to consider, compatibility and slots are key.
A company wants to use a cloud service where they can deploy their own applications on virtual machines without managing the underlying hardware. Which cloud service model best fits this requirement?
IaaS offers virtual machines and storage for custom deployments.
Why this answer
IaaS (Infrastructure as a Service) provides virtualized computing resources. The customer manages OS and apps, while the provider manages the hardware.
A user needs to run a Windows application on a Mac. Which approach uses a hypervisor to create a separate environment?
A virtual machine uses a hypervisor.
Why this answer
A virtual machine uses a hypervisor to run one OS inside another.
What is the decimal equivalent of the binary number 1101?
Correct conversion.
Why this answer
Binary 1101 = 1*8 + 1*4 + 0*2 + 1*1 = 13.
A technician is troubleshooting a computer that does not start. They suspect the BIOS may be corrupted. Which type of software is the BIOS?
BIOS is firmware.
Why this answer
BIOS (Basic Input/Output System) is firmware that is embedded in the motherboard's ROM chip.
Which of the following is an example of lossy compression?
JPEG uses lossy compression.
Why this answer
Lossy compression reduces file size by permanently removing some data, as in JPEG and MP3.
Which of the following is an example of application software?
Correct: Word is application software.
Why this answer
Microsoft Word is an end-user application for word processing.
Which cloud service model provides the customer with the ability to run and manage applications on a cloud infrastructure but does NOT give control over the underlying operating system?
PaaS abstracts the OS.
Why this answer
PaaS provides a platform to develop and run applications without managing the OS or infrastructure.
A technician needs to install a new graphics card in a desktop computer. Through which type of slot is the graphics card typically connected to the motherboard?
Correct: PCIe slots are used for expansion cards like GPUs.
Why this answer
Graphics cards connect via PCI Express (PCIe) slots.
Which of the following character encodings can represent characters from virtually all written languages?
Correct: UTF-8 supports all languages.
Why this answer
Unicode (UTF-8) is variable-width and supports all languages.
A student is converting the hexadecimal number 2F to decimal. What is the correct decimal value?
2F hex = 2*16 + 15 = 47 decimal.
Why this answer
Hexadecimal 2F: 2*16 + 15 = 32 + 15 = 47.
A system administrator is configuring a server to provide email services for a small business. The business wants to avoid managing the underlying infrastructure. Which cloud service model best fits this need?
Correct.
Why this answer
Software as a Service (SaaS) provides ready-to-use software over the internet, such as Office 365 for email.
Which cloud service model provides users with access to software applications over the internet without managing the underlying infrastructure?
Correct: SaaS delivers software applications.
Why this answer
SaaS (Software as a Service) delivers applications via the cloud.
A technician needs to identify a network interface on a device. Which notational system is most commonly associated with MAC addresses?
Hexadecimal is the standard representation for MAC addresses.
Why this answer
MAC addresses are typically written in hexadecimal (base 16) notation, using digits 0-9 and letters A-F.
Which of the following units represents the largest amount of data?
TB is the largest among the options.
Why this answer
TB (terabyte) is larger than GB, MB, and KB. 1 TB = 1024 GB, 1 GB = 1024 MB, 1 MB = 1024 KB.
A company is choosing between public, private, and hybrid cloud deployments. Which TWO statements correctly describe characteristics of these cloud models? (Select TWO.)
Public cloud is multi-tenant by design.
Why this answer
Public cloud resources are shared across multiple tenants. Private cloud is dedicated to a single organization. Hybrid combines both.
A technician is troubleshooting a computer that fails to boot. Which of the following types of firmware is responsible for initializing hardware and loading the operating system?
BIOS/UEFI is firmware that performs POST and loads the OS.
Why this answer
BIOS/UEFI is firmware that initializes hardware and boots the OS. The OS itself, boot loader, and device drivers are software loaded later.
A file is compressed using a lossless algorithm. Which of the following file types is most likely the result?
PNG uses lossless compression.
Why this answer
PNG uses lossless compression. JPEG is lossy. MP3 is lossy audio.
ZIP is a lossless archive format. The question asks for a file type (not archive).
A technician is converting the decimal number 255 to binary. Which binary value is correct?
Correct: 11111111 equals 255 decimal.
Why this answer
255 in binary is 11111111 (eight 1s).
A user wants to save a photo with the highest quality but does not care about file size. Which file format should they use?
PNG is lossless, preserving all image data.
Why this answer
Lossless formats like PNG preserve all data, while lossy formats like JPEG reduce quality for smaller size.
A support technician is explaining file compression to a user. Which THREE of the following are examples of lossless compression formats? (Select THREE).
Correct.
Why this answer
Lossless compression preserves all original data. ZIP and PNG are lossless. FLAC is a lossless audio format.
JPEG and MP3 are lossy.
A network technician is troubleshooting a connectivity issue and needs to identify the destination MAC address of a frame. Which TWO of the following are true about MAC addresses? (Select TWO.)
MAC addresses are 48 bits (6 bytes).
Why this answer
MAC addresses are 48-bit (6 bytes) and commonly represented in hexadecimal. They are assigned by manufacturers and are used at the data link layer.
A user notices that a file saved as a JPEG is smaller than the original BMP file. Which type of compression does JPEG typically use?
Correct: JPEG uses lossy compression.
Why this answer
JPEG uses lossy compression, which discards some data to reduce file size.
A user wants to upgrade a desktop computer for better gaming performance. Which TWO components should the user consider upgrading to improve graphics processing? (Select TWO).
Correct.
Why this answer
GPU (graphics card) and RAM (system memory) both impact gaming performance. CPU also matters but the question specifically says graphics processing.
A graphic designer needs to save an image with high quality and no data loss. Which THREE file formats should the designer consider for lossless compression? (Select THREE.)
TIFF supports lossless compression options.
Why this answer
Lossless compression preserves all original data. PNG uses lossless compression for images, ZIP compresses files without loss, and TIFF can be stored uncompressed or with lossless compression.
A graphic designer needs a component to accelerate rendering of 3D models. Which of the following computer hardware components is specifically designed for this purpose?
GPU accelerates graphics rendering.
Why this answer
GPU (Graphics Processing Unit) is specialized for rendering graphics and is used for 3D modeling, AI, and ML. CPU, RAM, and SSD are general-purpose components.
Which of the following best describes the function of an operating system?
Correct definition.
Why this answer
An operating system manages hardware resources and provides a platform for applications to run.
Which of the following best describes the function of a CPU cache?
Cache holds frequently used data for fast access.
Why this answer
CPU cache is a small, fast memory that stores frequently accessed data to speed up processing.
A network technician is analyzing a hexadecimal IP address representation. Which TWO of the following are true about hexadecimal notation? (Select TWO).
Correct.
Why this answer
Hexadecimal notation uses base-16, with digits 0-9 and letters A-F. Each hexadecimal digit represents 4 bits, which is useful for representing binary data in a compact form. In the context of IP address representation (such as IPv6), these are the key characteristics.
While hexadecimal is also used for MAC addresses, memory addresses, and HTML color codes, those are not directly related to IP address representation, so options B and E are not correct in this specific context. Option D is false because hexadecimal is base-16, not base-8.
A company is moving its email system to a cloud provider. The provider offers the software, platform, and infrastructure. Which TWO cloud service models are being used? (Select TWO.)
PaaS provides platform for application development and deployment.
Which of the following is the binary representation of the decimal number 5?
0101 is binary for 5.
Why this answer
In binary, 5 is 0101 (often written as 101). 4 in binary is 0100, 6 is 0110, and 3 is 0011.
Which of the following storage technologies uses spinning platters and a mechanical arm to read and write data?
Correct.
Why this answer
HDDs (Hard Disk Drives) use spinning magnetic platters and a mechanical read/write head.
Which of the following storage types uses spinning platters to read and write data?
HDDs use spinning platters.
Why this answer
HDDs (Hard Disk Drives) use spinning magnetic platters, while SSDs use flash memory.
An IT instructor is teaching about binary arithmetic operations. Which TWO of the following are correct results of a logical XOR operation on the binary inputs 1 and 0? (Select TWO.)
Inputs differ, result is 1.
Why this answer
XOR outputs 1 when inputs differ. 1 XOR 0 = 1. Also, 0 XOR 1 = 1. So both pairs produce 1.
Which component on the motherboard is responsible for temporarily storing frequently accessed data to speed up processing?
Correct.
Why this answer
CPU cache (L1, L2, L3) is a small, fast memory that stores frequently accessed data.
A support technician is explaining binary operations to a junior technician. Which TWO of the following are valid binary arithmetic operations? (Select TWO.)
AND is a valid binary operation.
Why this answer
AND and XOR are standard binary operations; NOT is unary; OR is included but only TWO must be selected. The correct ones are AND and XOR.
A network technician is configuring a device and needs to enter a MAC address. Which of the following is a valid MAC address in hexadecimal notation?
Valid MAC address with hex digits.
Why this answer
MAC addresses are 12 hexadecimal digits (0-9, A-F), typically displayed in pairs separated by colons, e.g., 3A:4B:5C:6D:7E:8F. Option A uses letters beyond F (G, H, I, J, K, L) which are not hex digits. Option B has only 6 digits (AB:CD:EF), which is too few.
Option D uses Z, Y, W which are not valid hex digits. Only option C meets the requirements: 12 hex digits using only 0-9 and A-F.
A user is selecting a new computer and sees that the CPU has a clock speed of 3.6 GHz and four cores. What does the clock speed of 3.6 GHz indicate?
GHz means billions of cycles per second.
Why this answer
Clock speed (GHz) indicates how many billions of cycles per second the CPU can execute. It does not directly indicate cache size, core count, or power consumption.
A developer is writing a program that needs to handle text in multiple languages, including Chinese and Arabic. Which THREE character encoding systems should they consider? (Choose three.)
UTF-8 supports all languages.
Why this answer
Unicode (and its implementations UTF-8, UTF-16, UTF-32) and ASCII (though limited) are relevant. UTF-8 is variable-width and supports all languages. ASCII is 7-bit English.
UTF-16 is another Unicode form.
Which of the following is an example of a lossy compression format?
Correct.
Why this answer
JPEG is a lossy image compression format that discards some data to reduce file size.
A technician is explaining the difference between lossy and lossless compression to a colleague. Which of the following file formats uses lossy compression?
JPEG uses lossy compression for images.
Why this answer
JPEG uses lossy compression, discarding some image data to reduce file size. ZIP, PNG, and GIF use lossless compression.
Which of the following best describes the function of an operating system?
Correct: the OS handles resource management and serves as a platform.
Why this answer
The OS manages hardware resources and provides services for application software.
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