What is the primary function of a router?

• Connects devices within a network

• Switches data packets within a LAN

• Routes data between networks

• Manages power over Ethernet (PoE)

What is the default administrative distance of OSPF?

• 90

• 110

• 120

• 115

Which of the following is NOT a valid private IP address?

• 192.168.1.10

• 10.0.0.5

• 172.16.5.20

• 200.1.1.1

Which Ethernet cable standard is most common for straight-through cables in networking?

• TIA/EIA-568A

• TIA/EIA-568B

• TIA/EIA-568C

• TIA/EIA-569A

What is the size of an IPv6 address?

• 32 bits

• 48 bits

• 64 bits

• 128 bits

What type of topology uses a single main cable to connect all network devices?

• Star

• Ring

• Bus

• Mesh

In the OSI model, which layer is responsible for error-checking and flow control?

• Data Link

• Network

• Transport

• Session

What is the primary purpose of a subnet mask?

• Identify the network part of an IP address

• Define the gateway IP address

• Encrypt data packets

• Resolve hostnames

Which cable type has the longest distance capabilities without requiring repeaters?

• Coaxial

• Multimode fiber

• Single-mode fiber

• Twisted pair

Which type of address is unique to each device and used at the Data Link Layer?

• IP address

• MAC address

• Port number

• Subnet mask