Desktop Support Questions
What
is active directory?
Active directory authorizes
and authenticates all users and computers in a window domain network, ensuring
the security of the computer and software. Through active directory
various functions can be managed like creating admin users, connecting to
printers or external hard drives.
What
is DHCP and what it is used for?
DHCP stands for dynamic
host configuration protocol. It is used to allocate IP addresses to a large
number of the computer system in a network. It helps in managing the
large number of IP’s
very easily.
What
is DNS?
DNS mean Domain Naming
Service and it is used for resolving IP addresses to name and names to IP
address. DNS is like a translator for computers, computers understand the
number and not the alphabet. For example, if we type like hotmail.com, the
computer don’t understand this so they use DNS which converts
(hotmail.com) into (numbers) and then executes the command.
What
is forward and reverse lookup in DNS?
When we convert IP address
into names is called Reverse lookup, while converting names into IP address is called
Forward lookup
What
is ‘A’ record and what is ‘MX record’?
‘A’
record is also known as host record, and it has ability to map the IP address
by name. It is with this record that DNS can find out the IP address
of a name. While, ‘MX record’ also known as mail exchanger record, by the
help of ‘MX’ record, location of the mail server is identified. The record is also found
in DNS.
What is IPCONFIG command?
IPCONFIG
command is used to display the IP information of the computer assigned like DNS
IP address
and gateway IP address.
What
would you use to connect two computers without using switches?
Cross cables are used to
connect two computers without using switches.
What
is a domain?
Domain
is a set of computers which network recognizes by the internet. It can be used
by
centrally
administer computers. It is created when you install active directory.
What
are the types of operating system or O.S?
The two types of operating systems are: NOS : Network Operating System. Examples of
NOS- Windows NT, 2000,2003 SOS : Simple Operating System. Examples of SOS -
Windows 95,98, ME
Explain about RAS server?
RAS
means Remote Access Server. It allows operating the tool or
information that typically resides on a network or IT devices through
combination of hardware and software, for example connecting to printer or
file. It is usually used for mobile users who are in the network. It uses telephone
line to provide connectivity to its users. It can also connect two or more than
two offices
in the network.
Explain
about VPN server?
VPN
means Virtual Private Network. It is a private communications network often
used by companies or organizations to communicate confidentially over a public
network. This is used by the mobile users in the network.
What
is Ping command?
Between two or more
devices, to check the physical IP connectivity Ping command is used.
What
is OU?
OU means for Organizational
Unit. It is a container within Active Directory which can hold users, groups and computers. It is the smallest unit on which
administrator can assign group policy settings.
Explain
group policy?
Group
policy provides the stream line access to all the users in the network, it can
be used to define the users security and networking policies. By
group policy you can keep control over certain function like not allowing
the users to shut down the system or using the control panel or running
the command. Group policy is applicable on active directory container like OU,
site and Domain.
What is a “Default Gateway”?
Default
gateway is the IP address of the router in the network. In any case,
if the users wants to switch on to another network, or if they cannot locate
their particular network than their query will be forwarded to default gateway.
How
you can take backup of emails in ms outlook?
To
take a back-up in the ms outlook, you have to go in control panel. In control
panel you have to go under mail option and then open the data file, select
personal folder and click on open folder. After that, you have to copy
.pst and have to paste it wherever you want the backup.
What is the major difference you can mention about
Gateway and Router?
Gateway
works on different network architecture and router works on same network
architecture.
How
many classes are there for “IP addresses” and what are the ranges?
They are segregated into
five classes
1. Class A ==== 0 -126 (127 is reserved for loop back)
2. Class B ==== 128- 191
3. Class C ==== 192-223
4. Class D ==== 224-239
5. Class E ==== 240-255
What
is the difference between incremental backup and differential backup?
In
incremental backup only incremental parts are backup and not the full back up,
while in differential
backup we take full back up after the normal backup.
What is reservation?
Basically the term
“Reservation” is used in DHCP server. Some network equipment or
Computer
system needs a specific IP address, in such case we make a reservation in
DHCP server for that particular computer system. By creating
reservation it gives access to that particular IP address and at the same
time prevents other computer system to use that IP address.
What
is SMTP server or POP server?
SMTP
stands for simple mail transfer protocol. It is basically used for sending and
receiving the mail, whereas, POP stands for post office protocol it is used for
mail receiving purpose in the network.
