Netops-Cyber security Question paper

Q1 . If an IP address uses a subnet mask of 255.255.255.0, how many usable hosts can be in this subnet?

• 254

• 256

• 128

• 512

Q2. A network administrator needs to open ports 5901 to 5920 on a firewall. How many ports are being opened?

• 19

• 20

• 21

• 18

Q3. You are asked to design a network with 4 subnets, each with 60 hosts. What is the minimum subnet mask you should use?

• 26

• 25

• 24

• 27

Q4. If you have a 1 Gbps network link and the total data transferred is 500 GB in 2 hours, what is the average bandwidth usage in Mbps?

• 300

• 600

• 500

• 555

Q5. If a switch has 48 ports and each port supports up to 1 Gbps, what is the total switching capacity if all ports are operating at full speed?

• 24 Gbps

• 48 Gbps

• 96 Gbps

• 12 Gbps

Q6. Which command is used to display all active network connections and listening ports on a Windows machine?

• ipconfig

• nslookup

• netstat

• tracert

Q7. If a network has a total of 500 devices connected and each device sends data at an average rate of 200 Kbps, what is the total bandwidth requirement in Mbps?

• 10 Mbps

• 100 Mbps

• 50 Mbps

• 200 Mbps

Q8. Which protocol ensures secure data transmission over the internet by encrypting it?

• TCP

• UDP

• HTTP

• HTTPS

Q9. What is the primary purpose of a firewall in network security?

• Block all incoming traffic

• Encrypt data

• Filter traffic based on rules

• Speed up network connections

Q10. Which device connects different networks and forwards data packets between them?

• Switch

• Router

• Hub

• Modem