Computer systems tech quiz lesson 2 &3

How many major functions does a computer system have?

• 3

• 2

• 4

• 1

What do the computer hardware components comprise of?

• Peripherals, Motherboard and CPU

• Chassis/Casing and Peripherals

• Random Access Memory(RAM), Motherboard and Power Supply Unit(PSU)

• Chassis/Casing, Power Supply Unit (PSU) and peripherals

What is software?

• Instructions executed by the computer that tells the computer what to do

• A program that help perform a specific task according to the utilization of a computer

• A program that provides an interface to run application software and less noticed by end users

• A complete, self contained program that performs a specific function directly for the user

What can an operating system do?

• Recognizes, Keeps track, decides, ensures and provides

• Process, ensures and decides

• program, ensures and provides

• Recognizes, keeps track and decides

What is Virtualization?

• A piece of computer software, firmware that runs virtual machines

• Process of creating a software based of OS applications, servers, storage and networks

• Provides abstraction of operating system level virtualization

• A desktop-centric service that hosts user desktop environments on remote servers

Answer explanation

Virtualization is the process of creating a software-based, or virtual representation of operating system, applications, servers, storage and networks

What are the advantages of virtualization?

• Maximise resources, run multiple systems, IT budget integration, security, effective resource usage and ease management

• effective resource usage, ease of management and security

• Maximise resources, run multiple systems, IT budget integration

• Translates all OS instructions on the fly and caches the result for future use

How many types of virtualization are there?

• 2

• 6

• 5

• 8

Answer explanation

Server, Desktop, Storage, Network and Data virtualization

What are the benefits of desktop virtualization?

• Virtualized PC can support testing and development environments.

• Sensitive applications can be isolated into specific PC VMs.

• It provides hypercall interfaces for other critical kernel operations

• allows an application to retrieve and manipulate data without requiring technical details about the data, such as how it is formatted at source

What command displays extra information?

• ls -l

• ls -a

• ls -a

• ls -la

Which command counts the number of lines, words and characters?

• wc -l

• nano <filename>

• cat <filename>

• touch <filename>