Question 1

The ____ layer of the OSI model generates the receiver's address and ensures the integrity of messages by making sure packets are delivered without error,in sequence,and with no loss or duplication.

Accepted Answer

The transport layer of the OSI model is responsible for providing reliable end-to-end communication between applications. It ensures the integrity of messages by providing error-checking, flow control, and congestion control. It also generates the receiver's address and ensures packets are delivered without error, in sequence, and with no loss or duplication. Therefore, the best choice is D) Transport.

Question 2

A service set identifier is the part of a wirelessLAN that connects it to other networks.

Accepted Answer

A service set identifier (SSID) is a unique name that identifies a specific wireless local area network (WLAN), not the part that connects it to other networks.

Question 3

Any packet-switching network can handle multimedia data.

Accepted Answer

Packet-switching networks are designed to handle various types of data, including multimedia data, by breaking them down into small packets and transmitting them over the network. This allows for efficient and flexible transmission of large and diverse datasets. Therefore, any packet-switching network can handle multimedia data.

Question 4

____ cables are glass tubes surrounded by concentric layers of glass,called "cladding," to form a light path through wire cables.

Accepted Answer

Fiber-optic cables are glass tubes with multiple concentric layers of glass, also known as "cladding," that form a light path. This design allows for faster data transmission and greater bandwidth capacity than other cable types.

Question 5

In the context of mobile networking,the 3G network has increased the quality of Internet Telephony or Voice over Internet Protocol.

Accepted Answer

3G network provides better bandwidth and faster data transfer rates which improves the quality of Internet Telephony or Voice over Internet Protocol.

Question 6

____ media operate on line-of-sight.

Accepted Answer

Terrestrial microwave operates on line-of-sight, meaning there should not be any obstructions like hills or buildings on the path between the transmitting and receiving antennas. This type of media is commonly used for point-to-point communication between buildings, broadcast transmission, and telephone network interconnection. The other options mentioned, such as multipoint, coaxial, and fiber optic, do not necessarily require line-of-sight for their operation.

Question 7

A mesh is a hardware and software device that controls the data transfer from a computer to a peripheral device and vice versa.

Accepted Answer

A mesh is a network topology that connects multiple devices together in a decentralized and self-organizing manner, but it does not control data transfer between a computer and a peripheral device. This is typically done by drivers and protocols implemented in the computer and the peripheral device.

Question 8

The ____ layer of the OSI model serves as the window through which applications access network services.

Accepted Answer

The Application layer is responsible for providing services to the end user, such as file transfer and email, and serves as the interface between the user's application and the network. It is the layer through which applications access network services.

Question 9

Internet protocol is responsible for packet forwarding.

Accepted Answer

Internet protocol, or IP, is responsible for packet forwarding in computer networks. It ensures that data packets are properly routed to their intended destination by using a network of routers and switches to determine the most efficient path for the packets to take. This allows for reliable and efficient communication between computers and other devices on the internet.

Question 10

The ____ layer of the OSI model specifies the electrical connections between computers and the transmission medium,and is primarily concerned with transmitting binary data,or bits over a communication network

Accepted Answer

The Physical layer is responsible for the actual physical connection between devices and the transmission of binary data over the communication network. This layer deals with the transmission of signals, voltage levels, and data encoding. The Application layer is concerned with providing network services to the end-user, while the Transport layer is responsible for providing reliable and efficient data transfer between end devices. The Data link layer is responsible for organizing and formatting data for transmission over a network.

Question 11

In ____ processing,each department has its own computer for performing processing tasks.

Accepted Answer

Decentralized processing is a system where each department or division has its own computer system for performing processing tasks. This allows for greater autonomy and efficiency within each department, but can also lead to issues with coordination and integration across departments. Centralized processing involves all processing tasks being performed on a single central computer, while distributed processing involves processing tasks being distributed across multiple computers in a network. Modular processing involves breaking down large applications into smaller, modular components for easier development and maintenance.

Question 12

In _____ data transmission,multiple pieces of data are sent simultaneously.

Accepted Answer

Broadband data transmission allows for multiple pieces of data to be sent simultaneously, which increases the speed and efficiency of data transfer. Narrowband and modular transmission do not involve sending multiple pieces of data simultaneously, and while wide area networks can facilitate broadband transmission, this is not a defining characteristic of the technology.

Question 13

A hub can choose the best possible path for packets based on distance and cost.

Accepted Answer

A hub operates at the physical layer and does not have the capability to choose the best path for packets based on distance and cost. This ability is associated with routers, which operate at the network layer.

Question 14

The ring topology needs more cable than a star topology.

Accepted Answer

The answer of The ring topology needs more cable than...

Question 15

Wireless network traffic can be captured with sniffers.

Accepted Answer

Wireless network traffic can be captured using sniffers, also known as network analyzers or packet sniffers. These tools allow users to capture and analyze network traffic, including data transmitted over Wi-Fi networks.

Question 16

The most common n-tier architecture is the three-tier architecture.

Accepted Answer

The three-tier architecture is the most common n-tier architecture, consisting of a presentation tier, application tier, and data tier.

Question 17

The _____ layer of the OSI model formats message packets.

Accepted Answer

The Presentation layer of the OSI model is responsible for formatting message packets. It is responsible for data translation, data encryption, and data compression. It prepares the data received from the Application layer for transmission and presents it to the Network layer in a format that can be understood.

Question 18

A bridge connects two LANs using the same protocol,and the communication medium must be the same on both LANs.

Accepted Answer

A bridge connects two LANs using the same protocol, but the communication medium can be different on each LAN.

Question 19

____ cables are thick cables that can be used for both data and voice transmissions.

Accepted Answer

Coaxial cables are capable of carrying both data and voice transmissions because they are designed with a copper conductor in the center, surrounded by insulating material and a copper shield. This construction provides protection against interference, allowing for reliable transmissions of both types of signals. Conductive cables are designed for carrying electrical power, not data or voice signals. Broadcast and base cables are not commonly used terms in the context of telecommunications.

Question 20

The amount of data that can be transferred from one point to another in one second is called ____.

Accepted Answer

Bandwidth is the amount of data that can be transferred from one point to another in one second. Controller is a device used for managing hardware or software. Router is a networking device that forwards data packets between computer networks. Protocol is a set of rules governing the exchange or transmission of data between devices. Therefore, the correct answer is option A: bandwidth.

Quiz 6: Data Communication: Delivering Information Anywhere and Anytime