DESKTOP VIRTUALIZATION
Desktop virtualization has become a catch all phrase for various mechanisms that simplify the
management of the user’s desktop environment.
VDI is a concept that has been around for some years. The basic concept is to host the desktops in
the datacenter rather than on the user’s desk. This concept was pioneered by Hewlett-Packard about
5 years ago. The first iteration of the idea involved taking a rack of blade computers, and installing
Windows XP on each blade; users then accessed their assigned blade using a standard Microsoft RDP
(Remote Desktop Protocol) client. As a concept, it worked for some high-end requirements. The advent
of server virtualization into the mainstream has meant that we can now host 30+ desktops on a single
server,A such that this technology is now far more affordable. Figure 1.1 is a diagram of a basic VDI.
The Client Hypervisor is another desktop virtualization technology. The Client Hypervisor
entails installing a hypervisor on a laptop or PC, which is used to host one or more desktop operating systems. This technology should not be confused with “Type 2” hypervisors like virtual PC or
VMware workstation that execute on top of a guest operating system. This differs from a server
hypervisor insofar as it allows the guest operating system to be accessible from the device itself.
Thursday, October 8, 2020
CITRIX Tutorials
MacOS Tutorials
What is macOS?
macOS is an operating system designed by Apple. The operating system is what allows you to use a computer. macOS comes preloaded on all new Apple Macintosh computers (commonly known as Macs).
macOS makes it possible to complete all kinds of everyday tasks on your computer. For example, you can use it to browse the Internet, check your email, edit digital photos, listen to music, and play games.
Earlier versions of macOS have been around since the mid-1980s. There have been many versions since then, but the most recent ones include macOS Catalina (2019), macOS Mojave (2018), High Sierra (2017), Sierra (2016). El Capitan (2015), and Yosemite (2014).
In some older versions, macOS was called OS X (pronounced O-S ten). However, many people use the terms OS X and macOS interchangeably because the basic functionality of the operating system is still very similar.
Getting started with macOS
Whether you're new to computers or just new to the macOS operating system, it's important to learn the basics of using your computer. If it all seems a little overwhelming right now, don't worry! We'll take you through it step by step.
How to Install Mac OS
How to Join MacOS Into Active Directory Domain.
More to Come.......
Tuesday, April 21, 2020
Dynamic Host Configuration Protocol
DHCP
DHCP
Dynamic
Host Configuration Protocol (DHCP) is a protocol for assigning dynamic IP
addresses to devices on a network. With dynamic addressing, a device can have a
different IP address every time it connects to the network. In some systems,
the device's IP address can even change while it is still connected. DHCP also
supports a mix of static and dynamic IP addresses.
How does DHCP work.
DHCP is based on a client-server model and
based on discovery, offer, request, and acknowledgment .DHCP port number for server is 67 and for the client is
68. It is a Client server protocol which uses UDP services. IP address is
assigned from a pool of addresses. In DHCP, the client and the server exchange
mainly 4 DHCP messages in order to make a connection, also called DORA process,
but there are 8 DHCP messages in the process.
DORA
is nothing but a sequence of messages which is exchanged between the DHCP
Server and Client. DORA stands for mentioned messages :
·
Discover
·
Offer
·
Request
·
Acknowledgment
Now, take a look on this image. This
image will clear the sequence of different messages which is used in DORA
Process.
Advantages – The advantages of using DHCP include:
·
centralized
management of IP addresses
·
ease
of adding new clients to a network
·
reuse
of IP addresses reducing the total number of IP addresses that are required
·
simple
reconfiguration of the IP address space on the DHCP server without needing to
reconfigure each client,The DHCP protocol gives the network administrator a method to configure the network
from a centralized area.
With the help of DHCP, easy handling of new users and reuse of IP address can
be achieved.
Monday, April 20, 2020
Top 10 Desktop Support Interview questions & Answers
Top 10 Desktop Support Interview questions & Answers
Q1- How to install operating system in USB Pen drive?
Ans-
Step 1. Format the USB Flash Disk
Run CMD (elevated) and type:
1. diskpart
2. list disk (now find your USB disk number, you will find it by its size)
3. select disk 2 (if your USB is disk 2)
Step 1. Format the USB Flash Disk
Run CMD (elevated) and type:
1. diskpart
2. list disk (now find your USB disk number, you will find it by its size)
3. select disk 2 (if your USB is disk 2)
4. clean
5. create partition primary
6. select partition 2 (this is 2, no matter what number is your USB disk)
7. active
8. format fs=fat32 (or ntfs, works with both)
9. assign
10. exit
Step 2. Copy Windows 10 or Windows 8 DVD content to the Flash Disk
5. create partition primary
6. select partition 2 (this is 2, no matter what number is your USB disk)
7. active
8. format fs=fat32 (or ntfs, works with both)
9. assign
10. exit
Step 2. Copy Windows 10 or Windows 8 DVD content to the Flash Disk
Q2- How to set the IP address by using the command prompt?
Ans-
There are Two ways to Set the IP address from CMD Prompt
1. Go to start, select run, type CMD, and in CMD Prompt type the command
1. Go to start, select run, type CMD, and in CMD Prompt type the command
C:>netsh interface ip set address name="Local Area Connection" source=dhcp
2.Go to start, select run, type CMD, and in CMD Prompt type the command
C:>netsh interface ip set address local static 192.168.10.100 255.255.255.0 192.168.10.20
C:>netsh interface ip set address local static 192.168.10.100 255.255.255.0 192.168.10.20
Q3- What is the technical difference between Desktop Support & Help Desk?
Answer:-
The difference between desktop support and helpdesk are the following:
1. Desktop support is the one doing the troubleshooting on hand.
2. Helpdesk support is the one receiving the call and troubleshoot it remotely
1. Desktop support is the one doing the troubleshooting on hand.
2. Helpdesk support is the one receiving the call and troubleshoot it remotely
Q4- What is LDAP Server?
Answer:-
LDAP, Lightweight Directory Access Protocol, is an Internet protocol that email and other programs use to look up information from a server.
Q5-What is Bluescreen? What would you do if your PC turns into Bluescreen?
Answer:-
major problem is RAM first check with ram then go to safe mode scan your PC by using antivirus at the same time update drivers it should be mother board supported drivers or else use recommended software
Q6-What is UAC (User Account control)?
Answer:-
user account control setting is a tools for administration that raise & alert if you modify the privilege of administrator.user account control protect your computer from malicious software because it allow user to notice when a document & program trying access.
Q7-What is HOSTS?
Answer:-
The "HOSTS" file contains entries that simulate "A" records in DNS (and PTR records, too). Only DNS-legal names are allowed in this file.
Q8-You are required to install a new printer on the Print Server what are your steps? Remember this will be a shared printer?
Answer:-
First Start--->Control Panel--->Printers---->Add printer--->Local (or) Network Printer--->Choose which brand printer and which one type of printer
(if it's needed drivers, push the driver CD in that PC)---->Select TYPE (LPT1 or USB)--->Finish. It's ready to use printer. now printer is online.
(if it's needed drivers, push the driver CD in that PC)---->Select TYPE (LPT1 or USB)--->Finish. It's ready to use printer. now printer is online.
Q9-Suppose there are a couple of way to view and disable the items that start to the task pain, how would you go about doing it and give me the full path to get you there?
Answer:-
To see the most start up item,
Go to start>programm>start up
To make any changes, enable or disable Go to Run & type "msconfig"
Go to start>programm>start up
To make any changes, enable or disable Go to Run & type "msconfig"
Q10-What is difference between MSI and EXE file?
Answer:-
AN msi is an installer, uninstaller and program repairer, it performs all those functions. The same file that installs the program also uninstalls it and if the programs detects missing files or corrupt settings the msi repairs it. When you install a program with an msi, a copy of it or a near copy is also installed somewhere so that the program is always able to be repaired without you having to really do anything.
C:Windows Installer is one of the folders where back-up msi are kept. If you have a choice choose msi.
C:Windows Installer is one of the folders where back-up msi are kept. If you have a choice choose msi.
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