C A+ U10 Networking

What is the primary purpose of the OSI model according to the document?

• Help understand how data travels through a network.

• Serve as a standard for all devices except those using an Apple OS.

• Ensure greater speed and connectivity for Internet of Things (IoT) devices.

• Provide a standard for developing and enhancing network security devices.

Which OSI model layer contains the hardware elements of networking such as Ethernet cables, COAX cables, and repeaters?

• Physical

• Data Link

• Network

• Transport

Which of the following layers of the OSI model is divided into two sections -- media access control and logical link control?

• Physical

• Network

• Data Link

• Transport

Which OSI layer is responsible for a three-way handshake to negotiate bidirectional communication?

• Physical

• Data Link

• Network

• Transport

Which OSI layer handles logical addressing and manages packet routing?

• Physical

• Data Link

• Network

• Transport

Which OSI layer establishes, maintains, and ends a session between computers?

• Session

• Data Link

• Network

• Presentation

Which OSI layer provides encryption and data compression?

• Session

• Data Link

• Network

• Presentation

At which OSI layer do services such as print services operate?

• Session

• Application

• Network

• Presentation

What is the problem with Sydney using a hub to connect two desktops to a printer?

• A hub operates at layer 3, and Sydney needs a layer 1 device.

• Hubs do not filter traffic, meaning that every device connected to it sees the transmissions.

• Hubs are expensive an only used in business (enterprise) networks.

• Printers will not communicate using a hub.

Which of the following statements best describe the differences between a hub and a switch?

• A hub can be used to connect a printer to the network, but a switch cannot.

• Hubs are used to segment networks, while switches are used to unsegment networks.

• A switch sends data to the correct device using MAC addresses, where a hub sends traffic to all connected devices.

• A hub greatly reduces the traffic on a network by only sending traffic to the appropriate device