Networking Concepts Quiz

The unit of data transmission at the physical layer is:

• Frame

• Packet

• Segment

• Bit

Which of the following transmission media has the highest transmission speed?

• Coaxial cable

• Fiber optic cable

• Twisted pair cable

• Radio waves

The main function of the data link layer is:

• Routing

• Delivery of frames

• Data encryption

• Address resolution

The primary responsibility of the network layer is:

• Error correction

• Flow control

• Routing of packets

• Encryption

Which protocol provides logical addressing at the network layer?

• TCP

• MAC

• IP

• ARP

Which addressing method is used in IP to send a packet to all hosts?

• Unicast

• Anycast

• Broadcast

• None of these

Which of the following is NOT a valid IPv4 address?

• 192.168.1.1

• 256.100.50.25

• 10.0.0.1

• 172.16.254.1

In IPv4, the header includes:

• Port number

• Sequence number

• Time-to-Live (TTL)

• Acknowledgement number

Fragmentation is needed when:

• The destination is unreachable

• The MTU is smaller than the packet size

• The bandwidth is too high

• There is a delay in transmission

Which protocol is used for error reporting and diagnostics in the network layer?

• IP

• ICMP

• TCP

• DHCP