Networking Quiz

A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows?

• The data flow is being tracked based on the destination MAC address of the technician PC.

• The data flow is being tracked based on the source port number that is used by each application.

• The data flow is being tracked based on the source IP address that is used by the PC of the technician.

• The data flow is being tracked based on the destination IP address that is used by the PC of the technician.

A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network?

• 255.255.255.240

• 255.255.255.224

• 255.255.255.192

• 255.255.255.128

Refer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network. (Not all options are used.)

What characteristic describes a DoS attack?

• the use of stolen credentials to access private data

• a network device that filters access and traffic coming into a network

• software that is installed on a user device and collects information about the user

• an attack that slows or crashes a device or network service

Match the application protocols to the correct transport protocols.

What service is provided by SMTP?

• Allows clients to send email to a mail server and the servers to send email to other servers.

• Allows remote access to network devices and servers.

• Uses encryption to provide secure remote access to network devices and servers.

• An application that allows real-time chatting among remote users.

Which scenario describes a function provided by the transport layer?

• A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.

• A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.

• A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

• A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

Refer to the exhibit. Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?

What does the term “attenuation” mean in data communication?

• strengthening of a signal by a networking device

• leakage of signals from one cable pair to another

• time for a signal to reach its destination

• loss of signal strength as distance increases

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?