Network and Security Foundations

Which layer of the OSI model is responsible for the establishment, maintaining and terminating the connection between two systems?

• Session
• Presentation
• Network
• Data Link

Which two layers of the OSI model are the same as the first layer of the TCP/IP model?

• Data Link
• Physical
• Application
• Session

Which of the following are transport layer protocols?

• TCP
• IP
• UDP
• ICMP
• TFTP

Starting at layer 1 and going to layer 7 what are the layers of the OSI model:

• application, presentation, session, transport, network, data link, physical
• session, presentation, data transport, MAC, network, physical
• physical, data link, network, transport, session, presentation, application
• presentation, application, session, network, transport, data link, physical
• application, encryption, network, transport, logical link control, physical

In the OSI model, what is the primary function of the Network layer?

• Allows applications to establish, use, and end a connection
• Routes data between networks
• Transmits data frames
• Ensures that packets are delivered with no loss or duplication

A switch forwards data only to the port that connects to the destination device. It knows which port to forward it to based on which value?

• Conf value

• IP address

• Port Number

• MAC Address

Which type of fiber cable is normally used to connect two buildings that are several miles apart?

• Single-mode

• Fibre Channel mode

• Multi-mode

• Dual-mode

Your company purchases a new bridge that filters packets based on the MAC address of the destination computer.

On which layer of the OSI model is this device functioning?

• Physical

• Data Link

• Network

• Session

Which of the following hardware devices forwards a signal out all connected ports without examining the frame or packet contents?

• Switch

• Modem

• Hub

• Bridge

Which command will show the hops that the packets passes through to get to its destination?

• ARP

• Route

• NSLOOKUP

• TRACERT