A+ 902 Test 12 Flashcards
Which of the following answers refers to a software tool used for searching and installing software packages on Debian and Debian-based Linux distributions?
apt-get
Which of the answers listed below refers to a command used for invoking a text editor in Unix-like operating systems?
vi
A low-level utility that can be used for creating/restoring filesystem backup copies in Linux is called:
dd
Which of the following terms refers to a solution that allows multiple operating systems to work simultaneously on the same hardware?
Virtualization
Which of the virtualization-related definitions listed below are correct?
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
Which components would have the highest priority while building a custom workstation designed to run virtual machines?
Maximum amount of RAM
Multicore CPU
Hardware enhancements adding support for virtualization developed by AMD for its CPUs are known as:
AMD-V
A set of Intel CPU hardware enhancements improving support for virtualization is called:
VT-x
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.
True
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:
Hypervisor
Which of the following statements describe(s) disadvantages of virtualization?
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
A cloud computing service model offering remote access to applications based on monthly pricing or annual subscription fee is called:
SaaS
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?
IaaS
Which of the following cloud service types would provide the best solution for a web developer intending to create a web app?
PaaS
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?
Public cloud
A cloud deployment model consisting of two or more interlinked cloud infrastructures (private, community, or public) is referred to as a hybrid cloud.
True
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?
Rapid elasticity
Which of the following terms applies to cloud computing feature that allows consumers to control the volume and type of utilized computing resources?
On-demand self-service
In cloud computing, the practice of grouping together computing resources and making them available for shared access for multiple consumers is referred to as:
Resource pooling
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.
True
What is the function of an HTTP server?
Serving of web pages
A dedicated file server is also referred to as:
FTP server
Which of the server types listed below is used to assign dynamic IP addresses to devices on a network?
DHCP server
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?
DNS server
