DevOpsTheHardWay

Networking - OSI Model

Please answer the quiz and click the "Test" button at the bottom right.

Question 1

Which of the following services are guaranteed by UDP?

• Control packet order flow
• Detect corrupted packets
• Make sure all packets have been transferred
• None of the above

Question 2

WhatsUp voice call feature has two major components:

1. Call manager - responsible to initialize the call to the destined participant, to ring, and to start the conversation session once the two sides are on-line.
2. Call streamer - responsible to transmit the recorded voice buffer between participants.

Choose the most suitable underlying protocol for each component:

• The call manager relying on TCP while the streamer on UDP
• The call manager relying on UDP while the streamer on TCP
• Both components relying on TCP
• Both components relying on UDP

Question 3

Complete the missing words in the below paragraph:

In the ... layer, bits are passing from one node to another, for example using wires. The ... layer handles the delivery of segments from the application layer, in a reliable or unreliable way. Then comes the ... layer which is responsible for moving packets from the source host to the destination host. Lastly, the ... layer handles messages from a variety of network applications such as Outlook mail.

• Transport, application, network interface, network
• Network Interface, transport, network, application
• Application, network, transport, network interface
• Network, Network interface, transport, application

Question 4

How many different hosts can be connected to the subnet denoted by 10.0.1.0/24?

• 254
• 24
• 1024
• 255

Question 5

Which of the following subnets is most specifically describes the following list of hosts IP:

1. 172.31.8.17
2. 172.31.37.152
3. 172.31.33.152
4. 172.31.42.73
5. 172.31.8.46

• 172.31.0.0/16
• 172.31.0.0/24
• 172.31.8.0/24
• 172.0.0.0/16