Computer Networks

1. Which protocol is used to assign IP addresses automatically to devices on a network?

• DNS

• DHCP

• FTP

• HTTP

What is the main function of the Network layer in the OSI model?

• Data encapsulation

• Error detection

• Routing and forwarding

• Flow control

1. Which of the following is a connection-oriented protocol?

• TCP

• UDP

• IP

• ICMP

1. What does a firewall primarily protect against?

• Unauthorized access

• Data corruption

• Hardware failure

• Network congestion

1. Which topology requires a central hub or switch to connect all devices?

• BUS

• STAR

• RING

• MESH

1. What is the default subnet mask for a Class C IP address?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• 255.255.255.255

1. Which of the following is not a type of network topology?

• STAR

• RING

• CIRCULAR

• MESH

1. Which of the following is a wireless networking standard?

• Ethernet

• Token Ring

• Wi-Fi

•  FDDI

1. What is the purpose of the ICMP protocol?

• To handle data encapsulation

• To manage routing tables

• To provide error messages and operational information

• To establish a connection

1. Which of the following addresses is used to identify a device on a local network?

• IP address

• MAC address

• Subnet mask

• Gateway address