CY1U10 Intro Network

The purpose of the OSI model is to

• 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 of the following layers of the OSI model 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
• Data Link
• Network
• Transport

Which of the following layers is where a three way handshake to negotiate bidirectional communication takes place?

• Physical
• Data Link
• Network
• Transport

Which of the following layers handles logical addressing and manages packet routing?

• Physical
• Data Link
• Network
• Transport

Which of the following layers establishes, maintains, and ends a session between computer?

• Physical
• Data Link
• Network
• Transport

Which of the following layers provides encryption and data compression?

• Physical
• Data Link
• Network
• Transport

Which of the following layers is where services, such as print services, operate?

• Physical
• Data Link
• Network
• Transport

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

• 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