Network troubleshooting
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QUESTION 1:
You are on your computer and you find out that you cannot connect to any website. What basic testing you will do first?
Check the cable if it is plugged or not
Do an "ipconfig" to check the configuration of the IP address
Call your ISP
Get a network technician
QUESTION 2:
You are trying to connect to a website by typing its name but in vain. However, you can connect to it if you type its IP address. What can be the problem?
The DHCP server is down
A problem with the DNS
Your network card is faulty
IP address has not been properly configured
QUESTION 3:
You are having a double NAT issue. Which is one of the troubleshooting measures you can adopt to correct this?
Verify the router
Put one of the router in bridge mode
Disable WAN in the router
Change the router from wired to wireless
QUESTION 4:
You are in a network with several computers and you realize there is an IP conflict issue. What you will do?
Switch off the router
Turn off one of the computers
Put a different IP address on one of the computers which have the same network identifier
Change the network adaptor of one of the computers
QUESTION 5:
Is it recommended to install two antiviruses on a computer?
Yes, both will give better protections
Yes, because it is your choice
No, as it will be useless
No, they can cause conflicts on your computer
QUESTION 6:
You cannot access a website. What can cause this?
Your firewall perhaps is blocking the website
You are having a high speed connection
You are on a LAN
You are not using an antivirus
QUESTION 7:
You want to change the password of your WI-FI router, but you do not know your default gateway IP address. How to find it?
ping 192.168.1.1
ping localhost
Type "ipconfig" in command-prompt
Type "nslookup" in command-prompt
QUESTION 8:
You are having issues to transfer/receive files from a server in your network. What can you do?
telnet servername 80
telnet servername 20 & 21
telnet servername 443
telnet servername 53
QUESTION 9:
A customer phones you and tells you he/she cannot login on an online account. What is the possible cause of this issue?
The customer perhaps is not a member on the account
The customer perhaps has not typed the username or the password correctly
Perhaps a problem with the server to accept the customer's details
All of them above
QUESTION 10:
You are not getting IP address on your computer. Which server you have to check?
The DHCP server
The DNS server
The web server
The proxy server
QUESTION 11:
After finding the problems on a network, what you should do next?
Escalate the problem
Determine the scope of the problems
Solve the problems
Document the problems
QUESTION 12:
To enjoy a good wireless connection, it is better to not?
Surf on illegal websites
Place your wireless router near a microwave
Use a wireless router near the window
Configure the DNS on the router
QUESTION 13:
Which tool you can use to filter network traffics in a LAN?
Port scanner
Firewall
Switch
Anti-malware
QUESTION 14:
You are using a hub in your LAN to connect 5 computers. However, you find out you are getting network issues. Which device you can use to replace the hub?
A network adapter
Switch
Firewall
Cable
QUESTION 15:
You are using "telnet" command to check a port. Your result is a blank screen on your command-prompt. What does this mean?
The port is busy
The port is opened
The port does not work
The port is protected
QUESTION 16:
You are on a mobile device and you cannot connect to the web, what is the possible reason behind this?
The wireless router is switched off
The WI-FI is switched off on the mobile device
You have not inserted the correct WI-FI password
All of them above
QUESTION 17:
You are troubleshooting a home network and you find out that the computer's IP address is: 190.168.5.100. What does this mean?
It has a private IP address
It has the default gateway IP address
It has Class A IP address
It has a public IP address
QUESTION 18:
Which IP address class you will use in a home network?
Class B
Class A
Class C
Class E
QUESTION 19:
A measure to secure your files is?
To install an antivirus
To install a file server
To use a public IP address
To use a router
QUESTION 20:
You are configuring an email server and you need to input the port number for SMTP. What is it?
25
110
143
53
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