IT INTERVIEW EXAM QUESTIONS AND ANSWERS
You've received a trouble ticket that monitor is not working; what is the first thing you should do? -
CORRECT ANSWER✅✅The thing you should do is check to see if all cables are plugged in correctly. First
check power, then video signal cable and if both check out make sure that computer itself is powered
on. If asked for further troubleshooting steps, explain that there is a possibility that video driver or PC
hardware could be causing the issue...
What is Safe Mode, how do you get to it, and what is it used for? - CORRECT ANSWER✅✅In order to
reach Safe Mode, computer must be restarted and by pressing F8 key before the OS loads. You will
arrive at the selection screen at which you will scroll up to select "Safe Mode". Safe Mode is used to
troubleshoot driver issues, hardware issues and remove viruses or unwanted software.
What is an IP Address and how to find it? - CORRECT ANSWER✅✅IP address is a number assigned to
your computer to identify its existence/location on a network. Meaning that DHCP server will assign a
number to each computer connected to a network as part of identification.
You can find your IP address by opening a Command Prompt Windows "CMD" and type in ipconfig/all.
Alternatively, you can look at network adapter properties.
What is a Default Gateway? - CORRECT ANSWER✅✅You can see what the Default Gateway is by
performing an ipconfig/all command through CMD. Default Gateway serves as a path to reach other
networks... For example, in order to reach the internet outside of your business or home; you need a
gateway that will open the way for you. Default Gateway in a business environment is typically a proxy
server.
What is Active Directory? - CORRECT ANSWER✅✅Active Directory is a feature of Windows Server OS
and it contains User Accounts, Objects/Host Names, Group Policies and Domain Services. For example,
Active Directory will have information about a user login credentials. In addition, it can contain group
policy that will apply different permissions to user accounts that belong to specific groups within
organization; within a domain.
What is a Domain? - CORRECT ANSWER✅✅Leading in from the previous question; Domain IS a group of
computers and users connected to a network. A user will have Domain login access once their
credentials are created/added to that specific Domain within Active Directory. In other words, your PC
login will most likely be a Domain login. As a side note, PC host names must be added to the same
, Domain, but user can still login even if the computer is attached to another Domain; within the same
network.
You receive a trouble ticket that states: "My printer is not working properly. It prints out weird pattern
on paper. Please assist." - CORRECT ANSWER✅✅This issue is caused by a bad/wrong printer driver.
Solution is to acquire and install a correct printer driver.
What are some commonly used LAN Cables? - CORRECT ANSWER✅✅There 4 different types of LAN
Cables: CAT5, CAT5 e, CAT6, and CAT6 a.
CAT5 speeds are up to 100mbps, CAT5 e up to 1000mbps, CAT6 up to 1000mbps certified gigabit. and
CAT6 a up to 10,000 mbps. All the speeds are based of 100meters maximum distance.
What is Blue Screen of Death (BSOD)? - CORRECT ANSWER✅✅BSOD is most commonly caused by bad
hardware; the error appears as a blue screen crashing the computer. BSOD can be caused by hardware,
software or driver issues and conflicts. In order to trouble shoot BSOD you will need to run a full
Hardware diagnostic on the PC and update all of the drivers.
What is DHCP? - CORRECT ANSWER✅✅DHCP stands for Dynamic Host Configuration Protocol and it
deals with handling of IP addresses for all computers connected to a network. Each computer is allowed
to have connection to the network or internet resources after DHCP Server assigns an IP address,
dynamically. Dynamic type of IP address can change at any point.
What is DNS? - CORRECT ANSWER✅✅DNS stands for Domain Name System and it reroutes known host
names to IP address that hosts it's service. For example; DNS for www.microsoft.com is located at
104.90.84.14, but it can change randomly. You could say that it serves as an address book for the host
names, which are then translated in to numbers (ip) in order for computers to understand it. In this
example it assigns and routes web address names to webhosting services.
What is VPN? - CORRECT ANSWER✅✅A Virtual Private Network is commonly used as a secure way to
connect from remote location to network resources in your business/company. For example; you can
take your laptop to a coffee shop, start a VPN, and through it securely connect to a PC at work, or access
company's emails and files.
You've received a trouble ticket that monitor is not working; what is the first thing you should do? -
CORRECT ANSWER✅✅The thing you should do is check to see if all cables are plugged in correctly. First
check power, then video signal cable and if both check out make sure that computer itself is powered
on. If asked for further troubleshooting steps, explain that there is a possibility that video driver or PC
hardware could be causing the issue...
What is Safe Mode, how do you get to it, and what is it used for? - CORRECT ANSWER✅✅In order to
reach Safe Mode, computer must be restarted and by pressing F8 key before the OS loads. You will
arrive at the selection screen at which you will scroll up to select "Safe Mode". Safe Mode is used to
troubleshoot driver issues, hardware issues and remove viruses or unwanted software.
What is an IP Address and how to find it? - CORRECT ANSWER✅✅IP address is a number assigned to
your computer to identify its existence/location on a network. Meaning that DHCP server will assign a
number to each computer connected to a network as part of identification.
You can find your IP address by opening a Command Prompt Windows "CMD" and type in ipconfig/all.
Alternatively, you can look at network adapter properties.
What is a Default Gateway? - CORRECT ANSWER✅✅You can see what the Default Gateway is by
performing an ipconfig/all command through CMD. Default Gateway serves as a path to reach other
networks... For example, in order to reach the internet outside of your business or home; you need a
gateway that will open the way for you. Default Gateway in a business environment is typically a proxy
server.
What is Active Directory? - CORRECT ANSWER✅✅Active Directory is a feature of Windows Server OS
and it contains User Accounts, Objects/Host Names, Group Policies and Domain Services. For example,
Active Directory will have information about a user login credentials. In addition, it can contain group
policy that will apply different permissions to user accounts that belong to specific groups within
organization; within a domain.
What is a Domain? - CORRECT ANSWER✅✅Leading in from the previous question; Domain IS a group of
computers and users connected to a network. A user will have Domain login access once their
credentials are created/added to that specific Domain within Active Directory. In other words, your PC
login will most likely be a Domain login. As a side note, PC host names must be added to the same
, Domain, but user can still login even if the computer is attached to another Domain; within the same
network.
You receive a trouble ticket that states: "My printer is not working properly. It prints out weird pattern
on paper. Please assist." - CORRECT ANSWER✅✅This issue is caused by a bad/wrong printer driver.
Solution is to acquire and install a correct printer driver.
What are some commonly used LAN Cables? - CORRECT ANSWER✅✅There 4 different types of LAN
Cables: CAT5, CAT5 e, CAT6, and CAT6 a.
CAT5 speeds are up to 100mbps, CAT5 e up to 1000mbps, CAT6 up to 1000mbps certified gigabit. and
CAT6 a up to 10,000 mbps. All the speeds are based of 100meters maximum distance.
What is Blue Screen of Death (BSOD)? - CORRECT ANSWER✅✅BSOD is most commonly caused by bad
hardware; the error appears as a blue screen crashing the computer. BSOD can be caused by hardware,
software or driver issues and conflicts. In order to trouble shoot BSOD you will need to run a full
Hardware diagnostic on the PC and update all of the drivers.
What is DHCP? - CORRECT ANSWER✅✅DHCP stands for Dynamic Host Configuration Protocol and it
deals with handling of IP addresses for all computers connected to a network. Each computer is allowed
to have connection to the network or internet resources after DHCP Server assigns an IP address,
dynamically. Dynamic type of IP address can change at any point.
What is DNS? - CORRECT ANSWER✅✅DNS stands for Domain Name System and it reroutes known host
names to IP address that hosts it's service. For example; DNS for www.microsoft.com is located at
104.90.84.14, but it can change randomly. You could say that it serves as an address book for the host
names, which are then translated in to numbers (ip) in order for computers to understand it. In this
example it assigns and routes web address names to webhosting services.
What is VPN? - CORRECT ANSWER✅✅A Virtual Private Network is commonly used as a secure way to
connect from remote location to network resources in your business/company. For example; you can
take your laptop to a coffee shop, start a VPN, and through it securely connect to a PC at work, or access
company's emails and files.
