Module 8 Quiz

T/F Ethernet is a standard communication protocol embedded in software and hardware devices used for building a local area network (LAN)

T/F An access point (AP) is the part of a wireless local area network (WLAN) that connects it to other networks

_____ are conducted communication media, which can be used for both data and voice transmissions.

T/F Fiber-optic cables have the lowest bandwidth of any communication medium.

A network interface card (NIC) operates at the Open Systems Interconnection (OSI) model's _____ layers.

In a bus topology, hardware devices called _____ are used at each end of the cable to absorb a transmitted signal.

In the context of the technologies developed to improve the efficiency and quality of digital communications, _____ divides each channel into six time slots.

T/F Protocols help ensure compatibility between different manufacturers devices.

The Transmission Control Protocol (TCP) operates at the Open Systems Interconnection (OSI) model's _____ layer.

In _____ data transmission, multiple pieces of data are sent simultaneously to increase the transmission rate.

T/F Wireless network traffic can be captured with sniffers.

A(n) _____ is a device that connects a user to the Internet.

A _____ is a hardware device that allows several nodes to share one communication channel.

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

A network _____ represents a network's physical layout.

T/F In a centralized processing system, processing power is distributed among several locations.

T/F Data transmission channels are generally divided into two types: broadband and narrowband.

The Wi-Fi Protected Access (WPA2) uses _____ to obtain a master key, which is in turn used to negotiate for a key that will be used for a session.

Horizontal scaling of client/server architecture means _____.

T/F Data communication systems are significantly apart from an organization's core functions.

Which of the following is the first action to take place in the most basic client/server configuration?

T/F A router operates at the Application layer of the Open Systems Interconnection (OSI) model.

T/F Data communication technologies make Web and video conferencing easier, which can reduce the costs of business travel.

_____ refers to using a cellular phone outside of a carrier's limited service area.

T/F A star topology uses a large number of cables to connect the nodes within a network.

A hierarchical topology is also called a _____ topology.

A(n) _____ is a network connecting device, which can build tables that identify addresses on each network.

The process of deciding which path the data takes on a network is called _____.

Coaxial cables are used mainly for:

T/F When a bridge connects two local area networks (LANs) using the same protocol, the communication medium must be the same on both LANs.

T/F An Ethernet cable is used to connect computers, hubs, switches, and routers to a network.

T/F The most common n-tier architecture is the three-tier architecture.

The _____ layer of the Open Systems Interconnection (OSI) model generates a 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.

_____ cables have the highest bandwidth of any communication medium.

In data communication, _____ refers to integrating voice, video, and data so that multimedia information can be used for decision making.

Which of the following media is based on line of sight?

T/F Distributed processing configuration maintains decentralized control and centralized operations.

Traditional mainframe networks use a _____ topology.

T/F In a point-to-point system, several devices share the same communication medium simultaneously.

The _____ layer of the Open Systems Interconnection (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.

T/F Communication media are used to connect sender and receiver devices.

Local area networks (LANs) are used to _____.

T/F Radiated media use a fiber-optic cable for transmitting data through air or water.

T/F In the Open Systems Interconnection (OSI) model, the session layer is responsible for formatting message packets.

T/F When phone lines are used for Internet connections, data transmission is possible without the use of analog modems.

T/F All Internet connections require a modem.

T/F The ring topology needs more cable than a star topology.

The _____ layer of the Open Systems Interconnection (OSI) model formats message packets.

_____ is a high-speed carrier service that uses ordinary phone lines to send and receive data.

T/F Internet protocol (IP) is responsible for packet forwarding.

T/F A multiplexer is a hardware and software device that controls data transfer from a computer to a peripheral device and vice versa.

Which of the following is an important application of data communication systems for managers to consult decision makers located throughout the world?

The _____ layer of the Open Systems Interconnection (OSI) model serves as the window through which computer programs access network services.

In a typical data communication system, which of the following statements is true of a sender and receiver device?

T/F Terrestrial microwave systems use ground-based microwave transmitters and receivers for transmitting data.

Computers in a local area network (LAN) are usually connected to the network via a(n) _____, which is a hardware component.

T/F A bus topology connects nodes along a network segment, with the ends connected in a manner similar to a ring topology.

A routing table lists _____.

T/F In the context of mobile networking, 3G networks have increased the quality of Internet Telephony or Voice over Internet Protocol (VoIP).

A _____ is a network operating on a radio frequency (RF), consisting of radio cells, each served by a fixed transmitter.

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

T/F Any packet-switching network can handle multimedia data.

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

T/F Coaxial cables are incompatible with wide area networks (WANs).

T/F Data transfer rates of local area networks (LANs) are typically below 100 Mbps.