IT Questions and Answers :)

Thursday, January 16, 2020

What common command line utility can be used to see MAC addresses of network devices on a LAN?

What common command line utility can be used to see MAC addresses of network devices on a LAN?

  • telnet -l
  • arp -a
  • ipconfig /all
  • ping -a 
What common command line utility can be used to see MAC addresses of network devices on a LAN?

EXPLANATION

Address Resolution Protocol (ARP) is a procedure for mapping a dynamic Internet Protocol address (IP address) to a permanent physical machine address in a local area network (LAN). The physical machine address is also known as a Media Access Control or MAC address.
arp is an operating system command used to view and modify the Address Resolution Protocol (ARP) cache. These activities will show you how to use the arp command.
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What 32-bit bus architecture was introduced by IBM with their new PS/2 range of personal computers in 1987?

What 32-bit bus architecture was introduced by IBM with their new PS/2 range of personal computers in 1987?

  • Peripheral Component Interconnect (PCI)
  • Micro Channel (MCA)
  • VESA Local Bus (VLB)
  • Extended Industry Standard Architecture (EISA) 
What 32-bit bus architecture was introduced by IBM with their new PS/2 range of personal computers in 1987?

EXPLANATION

Micro Channel architecture, or the Micro Channel bus, was a proprietary 16- or 32-bit parallel computer bus introduced by IBM in 1987 which was used on PS/2 and other computers until the mid-1990s.


IBM PC AKA Acorn
The code name for the new computer was "Acorn." Twelve engineers, led by William C. Lowe, assembled in Boca Raton, Florida, to design and build the "Acorn." On August 12, 1981, IBM released their new computer, re-named the IBM PC.

 


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80mm and 120mm are common sizes for what type of PC component?

80mm and 120mm are common sizes for what type of PC component?

  • USB
  • IEEE 1284
  • Case Fan
  • Heat sink 


EXPLANATION

A computer fan is any fan inside, or attached to, a computer case used for active cooling. Fans are used to draw cooler air into the case from the outside, expel warm air from inside and move air across a heat sink to cool a particular component.
It is always our recommendation that you buy cases with a minimum of 3 fans (or at least slots for adding them yourself) for gaming systems, not counting the power supply, CPU, and GPU fans. I know we say this about a lot of things (especially power supplies), but you really don't want to skimp on cooling.

 

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When it comes to the Windows Driver Model, what does WMI stand for?

When it comes to the Windows Driver Model, what does WMI stand for?

  • Windows Media Integration
  • Windows Module Instrument
  • Windows Management Instrumentation
  • Where's My Invoice 
When it comes to the Windows Driver Model, what does WMI stand for?

EXPLANATION

Windows Management Instrumentation (WMI) consists of a set of extensions to the Windows Driver Model that provides an operating system interface through which instrumented components provide information and notification. ... WMI comes preinstalled in Windows 2000 and in newer Microsoft OSes.


Windows Management Instrumentation (WMI) is a set of specifications from Microsoft for consolidating the management of devices and applications in a network from Windows computing systems.
WMI stands for Windows Management Instrumentation. ... In other words, WMI is an implementation of 'standards based' management, which only works on and with Windows. WMI's purpose is similar to that of SNMP: to enable the querying and control of management information in an enterprise.

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On Windows, which command displays a list of the shared folders on a system?

On Windows, which command displays a list of the shared folders on a system?

  • net share
  • Ntds
  • net view
  • sysvol 

On Windows, which command displays a list of the shared folders on a system?

EXPLANATION


The NET Share command is used to manage file/printer shares.
Syntax
      NET SHARE sharename=drive:path [/GRANT:user,[READ | CHANGE | FULL]]
             [/USERS:number | /UNLIMITED]]
                [/REMARK:"text"]
                   [/CACHE:Manual | Documents | Programs | BranchCache | None ]

      NET SHARE sharename /DELETE

      NET SHARE devicename /DELETE

      NET SHARE drive:path /DELETE

To modify an existing share, the syntax above can be simplified to NET SHARE sharename ...
with the one exception of the /GRANT option.

Filename Limits

When creating shares you should be aware that the mapped drive will always be shorter than the real path on the server. This can cause issues with the 260 character filename limit.
For example, if you have a folder on a server called E:\workgroups\ thats mapped for the users as X:\
A legal filename created on a client via the mapped drive:
X:\something\... 158 chars
then becomes on the server
E:\workgroups\something\...168 chars (which some server backup software may fail to read.)
You can minimise this issue by keeping the server path as short as possible E:\wg\
Examples
Display the details of the local share called workgroups
NET SHARE workgroups

Display the details of all local shares, including the folder/pathname that is being shared:
NET SHARE
To retrieve share details from a remote machine, use WMIC share
Create a new local file share
NET SHARE workgroups=C:\work /REMARK:"workgroups share" /CACHE:No

Limit the number of users who can connect to a share
NET SHARE workgroups /USERS:15

Remove any limit on the number of users who can connect to a share
NET SHARE workgroups /UNLIMITED

Delete the share
NET SHARE workgroups /DELETE

Delete all shares that apply to a given device
NET SHARE devicename /DELETE
In this case the devicename can be a printer (Lpt1) or a pathname (C:\Docs\)

To create file shares, File and Printer sharing must be enabled on the (server) computer.
“Don’t worry about people stealing an idea. If it's original, you will have to ram it down their throats” ~ Howard Aiken

Related:

NET - Manage network resources.
NET USE - Connect to a file share (Drive MAP).
NET VIEW - View existing file/printer shares (local or remote).
Enable Admin Shares
WMIC share - View remote file/print shares.
Q149427 - Change Password from the CMD prompt.
Powershell: Get-WmiObject win32_share


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