IT Questions and Answers :)

Monday, May 27, 2019

Why would you change the default channel on a wireless access point?

Why would you change the default channel on a wireless access point?

  • To release the SSID
  • To decrease WEP security settings
  • If channel overlap occurs between access points [Please report iif the answer is incorrect]
  • To increase WEP security settings

Why would you change the default channel on a wireless access point?

EXPLANATION

 

One reason your wireless network may have poor Wi-Fi signal is because of interference caused by other devices. Since most wireless home networks transmit their signals in a narrow radio frequency range around 2.4 GHz, it's common for devices on the same frequency to affect the wireless signal.
Other electronics in a home, like cordless phones, garage door openers, baby monitors, and microwave ovens, may also use this same frequency range. Any such device can easily interfere with a wireless home network, slowing down its performance and potentially breaking network connections.
One reason your wireless network may have poor Wi-Fi signal is because of interference caused by other devices. Since most wireless home networks transmit their signals in a narrow radio frequency range around 2.4 GHz, it's common for devices on the same frequency to affect the wireless signal. Other electronics in a home, like cordless phones, garage door openers, baby monitors, and microwave ovens, may also use this same frequency range. Any such device can easily interfere with a wireless home network, slowing down its performance and potentially breaking network connections. Likewise, the wireless networks of neighbors generally all use the same form of radio signaling. Especially in residences that share walls with each other, interference between different home networks is not uncommon. Fortunately, most routers give you the option to change the wireless channel so they can communicate on a different frequency to avoid interference.
Likewise, the wireless networks of neighbors generally all use the same form of radio signaling. Especially in residences that share walls with each other, interference between different home networks is not uncommon.
Fortunately, most routers give you the option to change the wireless channel so they can communicate on a different frequency to avoid interference.

 https://community.spiceworks.com/topic/125991-mulitple-wireless-access-points-same-channel-or-different

Share:

Using the command prompt, what Active Directory command adds a user?

Using the command prompt, what Active Directory command adds a user?

  • -ad user
  • dsadd user
  • add-user user
  • AddUser user 


EXPLANATION

Adding a new user with the dsadd command is a little easier than with PowerShell, as we don’t need to convert the password to a secure string. Open a PowerShell prompt or command prompt, type the command below and press ENTER. To open a PowerShell prompt, click the blue PowerShell icon on the desktop taskbar, or click the Windows PowerShell tile on the Start screen. It doesn’t matter that dsadd is not a PowerShell cmdlet, it can still be run from a PowerShell window.

dsadd user cn=Russell Smith,cn=Users,dc=ad,dc=contoso,dc=com -samid russellsmith -upn russellsmith@ad.contoso.com -fn Russell -ln Smith -display Russell Smith -disabled no -pwd PassW0rd! -mustchpwd yes
Share:

Which Active Directory folder contains login scripts?

Which Active Directory folder contains login scripts?

  • SYSVOL
  • System32
  • Sciripts
  • Schema 

Which Active Directory folder contains login scripts?


EXPLANATION

 In Microsoft Windows, the System Volume (Sysvol) is a shared directory that stores the server copy of the domain's public files that must be shared for common access and replication throughout a domain. The term SYSVOL refers to a set of files and folders that reside on the local hard disk of each domain controller in a domain and that are replicated by the File Replication service (FRS). Network clients access the contents of the SYSVOL tree by using the NETLOGON and SYSVOL shared folders. Sysvol uses junction points-a physical location on a hard disk that points to data that is located elsewhere on your disk or other storage device-to manage a single instance store.

The System Volume (Sysvol) is a shared directory that stores the server copy of the domain's public files that must be shared for common access and replication throughout a domain. The Sysvol folder on a domain controller contains the following items:

  • Net Logon shares. These typically host logon scripts and policy objects for network client computers.
  • User logon scripts for domains where the administrator uses Active Directory Users and Computers.
  • Windows Group Policy.
  • File replication service (FRS) staging folder and files that must be available and synchronized between domain controllers.
  • File system junctions.
File system junctions are used extensively in the Sysvol structure and are a feature of NTFS file system 3.0. You must be aware of the existence of junction points and how they operate so that you can avoid data loss or corruption that may occur if you modify the Sysvol structure.

 

Share:

Which of the following allows electrical power to transmit over twisted-pair ethernet cable?

Which of the following allows electrical power to transmit over twisted-pair ethernet cable?

  • EESR
  • PPPoE
  • PoE
  • MaMM 
Which of the following allows electrical power to transmit over twisted-pair ethernet cable?

EXPLANATION

Which of the following acronyms refers to a solution that allows for carrying both data and electrical power over a single twisted-pair Ethernet cable?

PoE


Power over Ethernet or PoE describes any of several standard or ad-hoc systems which pass electric power along with data on twisted pair Ethernet cabling

  

 

Share:

What is vi?

What is vi?

  • A script
  • A mail program
  • An editor
  • A shell 

EXPLANATION

vi
vi is a screen-oriented text editor originally created for the Unix operating system. The portable subset of the behavior of vi and programs based on it, and the ex editor language supported within these programs, is described by the Single Unix Specification and POSIX.Wikipedia
Developer(s):Bill Joy
Initial release:1976
Written in:C

 


Share:

What is a Hybrid Cloud?

What is a Hybrid Cloud?

  • Public + Private Cloud
  • Public + IAM Cloud
  • Private + Home Cloud
  • Private + Bob Cloud 

 
What is a Hybrid Cloud?

EXPLANATION

It is the combination of public and private cloud. It is the most robust approach to implement cloud architecture as it includes the functionalities and features of both the worlds.
It allows organizations to create their own cloud and allow them to give the control over to someone else as well.

SOURCE

https://www.careerride.com/cloud-computing-interview-questions.aspx
Share:

Thursday, May 23, 2019

Wi-Fi commonly makes transmissions at what frequencies?

Wi-Fi commonly makes transmissions at what frequencies?

  • 3 or 8 GHz
  • 5 or 13 GHz
  • 2.4 or 5 GHz
  • Any GHz 
Wi-Fi commonly makes transmissions at what frequencies?

EXPLANATION

Few devices are as essential to the smooth running of a modern-day digital household than a wireless router, so it’s strange that this black box is so little understood. Here we’ll outline one of the key features of many modern routers, dual band 2.4GHz and 5GHz support, so you know exactly what it is and how to take advantage of each.

Not every router out there offers both 2.4GHz and 5GHz, but most devices released in the last few years do. These boxes are typically advertised as “dual band” and while the specifics of each router are different, the principles behind these two bands are the same no matter what hardware you’ve got installed.
As well as a router that supports both these bands, you need devices that do too—and the vast majority of recent gadgets out there now do. Low-powered and older bits of hardware might be limited to 2.4GHz only, but they’re becoming less common.
Share:

Popular Posts