Networking: Practice Questions

• a.Transport layer
• b.Link layer
• c.Application layer
• d.Network layer

• a.To ensure that only devices with authorised MAC addresses can connect to the access point.
• b.To encrypt data packets using the WPA2 standard before they are transmitted wirelessly.
• c.To detect when a collision has occurred and immediately retransmit the lost packet.
• d.To prevent data collisions by checking the medium and using a 'Request to Send/Clear to Send' handshake.

• a.The central switch acts as a router, examining the Network layer header to send packets only to the destination node.
• b.Data is passed in a sequential loop from one node to the next until it reaches the destination.
• c.Data is physically routed through a central point but logically behaves as if all nodes are connected to a single shared cable, broadcasting to all nodes.
• d.The switch creates a dedicated point-to-point circuit for every transmission, preventing all collisions.

• a.To forward packets within the same local area network using MAC addresses.
• b.To translate private IP addresses into a single public IP address for internet access.
• c.To assign dynamic IP addresses to devices as they join the network.
• d.To connect networks that use different protocols by performing protocol translation.

• a.6 bits
• b.4 bits
• c.3 bits
• d.5 bits

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.