Day 5 Q2 Net Quiz

A small group of computers share files directly with each other without a central server. What model is this?

• Client-server

• WAN

• Peer-to-peer

• Cloud

A company wants to allow multiple devices on a private network to share one public IP address when accessing the internet. What technology is used?

• DHCP

• DNS

• NAT

• CIDR

What is the CIDR notation of the following subnet mask?

255.255.255.192

• /30

• /27

• /26

• /28

A network engineer wants to increase Wi-Fi performance by sending multiple data streams simultaneously using multiple antennas. Which technology is being used?

• OFDM

• MIMO

• NAT

• DNS

A Wi-Fi system splits signals into multiple smaller subcarriers to improve efficiency and reduce interference. What technology is this?

• DHCP

• OFDM

• MIMO

• WPA3

A network technician is troubleshooting why a secure website is not loading. Which port should they check is open?

• 80

• 21

• 25

• 443

A legacy web application is running without encryption. Which port is most likely being used?

• 80

• 443

• 25

• 53

An email server is configured to send outgoing mail but cannot connect externally. Which port should be checked?

• 80

• 443

• 25

• 23

A device has the IP address 192.168.5.12. Which class does this belong to?

• Class A

• Class B

• Class C

• Class D

A network uses the default subnet mask 255.255.0.0. What class is this?

• Class A

• Class B

• Class C

• Class D