mock test 2

Which protocol provides secure tunneling between networks over the internet?

• IPsec

• FTP

• HTTP

• ICMP

What function does a firewall serve in a network?

• Encrypts data for secure transmission

• Filters and controls incoming and outgoing traffic

• Connects multiple VLANs

• Routes data to remote networks

What is a defining characteristic of Layer 2 switches?

• They route packets using IP addresses.

• They operate based on MAC addresses.

• They provide firewall services.

• They support Network Address Translation (NAT).

What layer of the OSI model does TCP operate at?

• Layer 2

• Layer 3

• Layer 4

• Layer 7

What kind of topology connects each device directly to every other device in the network?

• Star

• Mesh

• Bus

• Ring

In a subnet mask, what does a '255' indicate?

• It's an IP address class.

• It represents the host portion.

• It represents the network portion.

• It represents the gateway address.

Which type of cable is most often used to connect similar devices, such as two switches?

• Straight-through

• Crossover

• Fiber optic

• Coaxial

What is the purpose of a default gateway in a network?

• It is a server used for IP address management.

• It routes packets to remote networks.

• It restricts access to local network segments.

• It resolves domain names to IP addresses.

Which layer of the OSI model is responsible for reliable data transfer?

• Layer 2

• Layer 3

• Layer 4

• Layer 7

What is the maximum transmission speed for a standard 802.11g wireless network?

• 54 Mbps

• 100 Mbps

• 450 Mbps

• 1 Gbps