A+ 902 Test 12

Question 1

Which of the following answers refers to a software tool used for searching and installing software packages on Debian and Debian-based Linux distributions?

Answer 1

apt-get

Question 2

Which of the answers listed below refers to a command used for invoking a text editor in Unix-like operating systems?

Answer 2

vi

Question 3

A low-level utility that can be used for creating/restoring filesystem backup copies in Linux is called:

Answer 3

dd

Question 4

Which of the following terms refers to a solution that allows multiple operating systems to work simultaneously on the same hardware?

Answer 4

Virtualization

Question 5

Which of the virtualization-related definitions listed below are correct?

Answer 5

An operating system run inside a virtual machine is referred to as a guest operating system
The term “Host machine” refers to a computer that uses virtualization software to run virtual machines
The term “Virtual machine” refers to an isolated operating system installation within the host operating system

Question 6

Which components would have the highest priority while building a custom workstation designed to run virtual machines?

Answer 6

Maximum amount of RAM

Multicore CPU

Question 7

Hardware enhancements adding support for virtualization developed by AMD for its CPUs are known as:

Answer 7

AMD-V

Question 8

A set of Intel CPU hardware enhancements improving support for virtualization is called:

Answer 8

VT-x

Question 9

The term “Emulator” refers to a solution that allows to bridge the gap between different OSs by enabling them to run software specifically designed for other (incompatible) operating systems.

Answer 9

True

Question 10

In virtualization technology, a software program that manages multiple operating systems (or multiple instances of the same operating system) on a single computer system is called:

Answer 10

Hypervisor

Question 11

Which of the following statements describe(s) disadvantages of virtualization?

Answer 11

Multiple virtual machines run on a single host share hardware resources which has a degrading effect on performance
Hardware used for hosting virtual machines becomes a single point of failure

Question 12

A cloud computing service model offering remote access to applications based on monthly pricing or annual subscription fee is called:

Answer 12

SaaS

Question 13

In which of the cloud computing service models clients, instead of buying all the hardware and software, purchase computing resources as an outsourced service from suppliers who own and maintain all the necessary equipment and software?

Answer 13

IaaS

Question 14

Which of the following cloud service types would provide the best solution for a web developer intending to create a web app?

Answer 14

PaaS

Question 15

Which of the answers listed below refers to a cloud computing deployment model in which the cloud infrastructure is provisioned for open use by the general public?

Answer 15

Public cloud

Question 16

A cloud deployment model consisting of two or more interlinked cloud infrastructures (private, community, or public) is referred to as a hybrid cloud.

Answer 16

True

Question 17

Which of the terms listed below refers to a cloud computing feature that allows for automatic allocation of computing resources in proportion with the demand?

Answer 17

Rapid elasticity

Question 18

Which of the following terms applies to cloud computing feature that allows consumers to control the volume and type of utilized computing resources?

Answer 18

On-demand self-service

Question 19

In cloud computing, the practice of grouping together computing resources and making them available for shared access for multiple consumers is referred to as:

Answer 19

Resource pooling

Question 20

In cloud computing, the term “Measured service” refers to the cloud provider’s ability to track the computing resources consumers are accessing as well as the amount of resources they are consuming. It provides transparency for both the provider and consumer and is used, among other applications, for the purpose of billing.

Answer 20

True

Question 21

What is the function of an HTTP server?

Answer 21

Serving of web pages

Question 22

A dedicated file server is also referred to as:

Answer 22

FTP server

Question 23

Which of the server types listed below is used to assign dynamic IP addresses to devices on a network?

Answer 23

DHCP server

Question 24

In order to be able to connect to a website and display its contents, a URL entered in the web browser address bar needs to be translated into an IP address. Which of the following server types is used to handle this type of request?

Answer 24

DNS server

Question 25

In computer networks, a computer system or an application that acts as an intermediary between another computer and the Internet is commonly referred to as:

Answer 25

Proxy