Network Access

Multiple Choice

When you plug an Ethernet cable into your laptop to get an internet connection, which layer of the OSI model is primarily involved in the physical connection?

• Data Link Layer

• Network Layer

• Physical Layer

• Transport Layer

Multiple Choice

You are watching a movie in 4K resolution on a streaming service, and it loads without any buffering. This is a good real-life example of:

• Low latency

• High bandwidth

• Low throughput

• Attenuation

Multiple Choice

A large company decides to use fiber-optic cables as the backbone for its campus network. A key advantage of this choice is that the cables are immune to:

• Attenuation over short distances

• The need for a Network Interface Card (NIC)

• Crosstalk from adjacent cables

• Electromagnetic Interference (EMI)

Multiple Choice

A network manager wants to connect two buildings that are a kilometer apart. The best choice of physical media for this connection would be:

• Coaxial cable

• UTP cable

• STP cable

• Fiber-optic cable

Multiple Choice

Which type of wireless device concentrates wireless signals from users and connects to the existing copper-based network infrastructure?

• Wireless NIC adapter

• Wireless-N Router

• Wireless Access Point (AP)

• Range Extender

Multiple Choice

What is the function of the Data field within a data link layer frame?

• To contain the frame payload, which includes the packet header, segment header, and data.

• To identify the beginning and end of the frame.

• To indicate the source and destination nodes.

• To identify the Layer 3 protocol.

Multiple Choice

Which of the following is a type of WAN physical topology that provides high availability by interconnecting every end system to every other system?

• Point-to-Point

• Hub and Spoke

• Star

• Mesh

Assessment Time

Multiple Choice

What is the function of the Logical Link Control (LLC) sublayer?

• It provides data link layer addressing.

• It defines the media access processes by the hardware.

• It communicates with the network layer and identifies the Layer 3 protocol.

• It communicates with wireless technologies like Wi-Fi and Bluetooth.

Multiple Choice

Which of the following describes a logical topology?

• The physical cabling of a network.

• How a network transfers frames from one node to the next.

• The number of devices connected to a network.

• The type of cables used in a network.

Multiple Choice

Which of the following is a common issue with copper cabling that causes the signal to deteriorate the longer it travels?

• Crosstalk

• Attenuation

• Electromagnetic interference (EMI)

• Radio frequency interference (RFI)