Computer Networks Quiz

Which of the following is NOT a guided transmission medium?

• Twisted pair cable

• Coaxial cable

• Fiber optic cable

• Radio waves

Which of the following network topologies provides a direct connection between every device?

• Star

• Bus

• Mesh

• Ring

Which protocol is used for remote command execution?

• HTTP

• SSH

• FTP

• SMTP

Which protocol is responsible for transferring email between mail servers?

• SMTP

• POP3

• IMAP

• FTP

Which of the following layers of the OSI model deals with error detection and correction?

• Physical

• Data Link

• Network

• Transport

Which device operates at the network layer of the OSI model?

• Switch

• Hub

• Router

• Repeater

What is the maximum number of bits in an IPv4 address?

• 16

• 32

• 64

• 128

Which protocol is used to dynamically assign IP addresses to devices?

• DNS

• DHCP

• ARP

• ICMP

Which of the following is used to prevent unauthorized access to a private network?

• Firewall

• Hub

• Modem

• Switch

Which type of attack involves overwhelming a server with excessive traffic?

• Phishing

• DDoS

• Man-in-the-middle

• Trojan