Basic Networking Concepts

What is the purpose of the data link layer in the OSI model?

• To handle error detection and correction

• To provide user interfaces

• To encrypt data

• To manage network connections

What are the two principal kinds of networks?

• WANs and MANs

• LANs and PANs

• WANs and LANs

• MANs and PANs

How many layers are involved in the OSI model?

• 5

• 6

• 7

• 8

Which OSI layer handles connection to the network by the higher layers?

• Network layer

• Data-link layer

• Physical layer

• Transport layer

Which layer of the OSI model is responsible for data encryption?

• Application layer

• Presentation layer

• Session layer

• Transport layer

What is the primary function of the Network layer in the OSI model?

• Routing packets

• Establishing connections

• Data encryption

• Error detection

Which protocol is used for secure communication over a computer network?

• HTTP

• FTP

• HTTPS

• SMTP

Which layer of the OSI model is responsible for end-to-end error recovery and flow control?

• Application Layer

• Transport Layer

• Network Layer

• Session Layer

FTP, DHCP, SMTP, SNMP, and Telnet are all protocols that are utilized by Applications and Web Browsers, so you would find these at what layer of the OSI Model?

• Data Link Layer (Layer 2)
• Application Layer (Layer 7)
• Network Layer (Layer 3)
• Transport Layer (Layer 4)

Which layer of the OSI model is responsible for starting and stopping communication between endpoints?

• Presentation Layer

• Session Layer

• Transport Layer

• Data Link Layer