Which of these processor architectures have smartphones traditionally used?

Which of these processor architectures have smartphones traditionally used?

• Pentium
• Core i7
• Phenom II
• ARM

EXPLANATION

Most commonly, mobile devices use Advanced RISC Machine (ARM) CPUs. Core i7, Phenom II, and the older Pentium are used by desktop and laptop computers.

 

Read More

A group of servers that work together to maintain high availability of applications and services is known as a

A group of servers that work together to maintain high availability of applications and services is known as a

• Fallover Cluster
• Fallsafe Cluster
• Failsafe Cluster
• Failover Cluster 

EXPLANATION

A failover cluster is a group of servers that work together to maintain high availability of applications and services. If one of the servers, or nodes, fails, another node in the cluster can take over its workload without any downtime (this process is known as failover).
https://technet.microsoft.com/en-us/library/hh831579(v=ws.11).asp

Read More

The physical server that runs the hypervisor is known as the:

The physical server that runs the hypervisor is known as the:

• Master
• Trunk
• Host
• Root 

EXPLANATION

A hypervisor is a program that allows multiple operating systems to share a single hardware host. The hypervisor runs on a host server, which is the physical server that provides the resources used these virtual operating systems. https://en.wikipedia.org/wiki/Hypervisor
The term "Host" comes from the biological relationship between a host and a parasite. http://www.businessdictionary.com/definition/host-computer.html
 

Read More

A device is having a problem accessing the web and internal network via Ethernet. The ticket says it's an OSI layer 1 issue. What is the most reasonable first troubleshooting step to take once you're at the user's desk?

A device is having a problem accessing the web and internal network via Ethernet. The ticket says it's an OSI layer 1 issue. What is the most reasonable first troubleshooting step to take once you're at the user's desk?

• Make sure the cable is plugged in and has link lights
• Check the IP address and make sure it is appropriate for the network
• See if it works in a different browser
• Make sure the TCP port isn't blocked 

 

EXPLANATION

Layer 1 is the physical layer. This layer transmits raw bits and doesn't differentiate them into packets.

Read More

Which of the following file extensions is used by Windows PowerShell script files?

Which of the following file extensions is used by Windows PowerShell script files?

• .ps1
• .cmd
• .shl
• .cpp 

 

EXPLANATION

A PowerShell script is a text file with a .ps1 extension  

Read More

Which of the following is true of IMAP?

Which of the following is true of IMAP?

• It uses port 110
• It sends and receives email
• It can only be used to send email
• It leaves messages on the mail server 

EXPLANATION

Unlike POP3, IMAP does not directly download and then remove messages from the mail server. Instead, it leaves the email on the server so that messages can be retrieved from various locations. IMAP is used only to retrieve email and uses port 143.
Here is some further discussion about this question

SOURCE

https://www.siteground.com/tutorials/email/pop3-imap-smtp-ports.htm

Read More

What Linux command sets a files permission?

What Linux command sets a files permission?

• properties
• rights
• chmod
• attrib 

EXPLANATION

In order to make this practical, a method had to be devised to protect the users from each other. After all, you could not allow the actions of one user to crash the computer, nor could you allow one user to interfere with the files belonging to another user.
This lesson will cover the following commands:
chmod - modify file access rightssu - temporarily become the superuserchown - change file ownershipchgrp - change a file's group ownership

SOURCE

http://linuxcommand.org/lc3_lts0090.php

Read More