ITN Chapter 1

Which of the following is true about ISO: It makes technical recommendations about data communications interfaces Its name stands for International Organization for Standardization It is based in Geneva, Switzerland It is one of the most important standards-making bodies All of the above

All of the above

A ___________ is similar to an intranet in that it uses Internet technologies, but is developed for users outside the organization. Internet Usenet Wide Area Network Extranet

Extranet

The application layer is the seventh layer of the Internet model and provides the end user's access to the network. True False

False

Which of the following is a term used to group together the physical and data link layers? Internetwork layers Hardware layers Software layers Middleware layers Application layers

Hardware layers

Which standards body is responsible for the development of local area network (LAN) standards? ANSI ISO IETF IEEE ITU-T

IEEE

___________ is an orderly close to a dialogue between end users. Session termination Physical bits Frame overhead Packet encapsulation Message encryption

Session termination

Which of the following is not an application layer standard? HTTP POP T1 IMAP HTML

T1

Which of the following is not true about de juro standards? They are always developed before de facto standards. One example exists for network layer software (IP). They can be developed by an official industry body. They can take several years to develop. They can be developed by a government body.

They are always developed before de facto standards.

According to John Chambers, CEO of Cisco (a leading networking technology company), the information age is the second Industrial Revolution. True False

True

At the transport layer in the Internet model, TCP is responsible for breaking large files received from the application layer into smaller packets and opening a connection to a server for transferring the packets. True False

True

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer. True False

True

Due to recent advances in high speed communication networks, the information lag, or the time it takes for information to be disseminated around the world, has been significantly shortened. True False

True

One perspective of data communications and networking as stated in the textbook, examines the management of networking technologies, including security, network design, and managing the network on a day-to-day basis and long term basis. True False

True

Telecommunications is the transmission of voice and video as well as data and implies transmitting a longer distance than in a data communication network. True False

True

The network layer is responsible for routing messages from the source computer to the destination computer. True False

True

A local area network is: a large central network that connects other networks in a distance spanning exactly 5 miles. a group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information. a network spanning a geographical area that usually encompasses a city or county area (3 to 30 miles). a network spanning a large geographical area (up to 1000s of miles). a network spanning exactly 10 miles with common carrier circuits.

a group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information.

A backbone network is: a high speed central network that connects other networks in a distance spanning up to several miles. a group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information. a network spanning a geographical area that usually encompasses a city or county area (3 to 30 miles). a network spanning a large geographical area (up to 1000s of miles). a network spanning exactly 200 miles with common carrier circuits.

a high speed central network that connects other networks in a distance spanning up to several miles.

In which layer of the Internet model would the HTTP standard be used? physical application transport network data link

application

Which of the following is not an important future trend in communication and networking? development of online batch systems integration of voice, video, and data pervasive networking provision of new information services on rapidly expanding networks development of extremely high speed broadband networks

development of online batch systems

The primary reason for networking standards is to: simplify cost accounting for networks ensure that hardware and software produced by different vendors can work together make it more difficult to develop hardware and software that link different networks ensure that all network components of a particular network can be provided by only one vendor lock customers into buying network components from one vendor

ensure that hardware and software produced by different vendors can work together

A(n) _________ is a LAN that uses the same technologies as the Internet but is provided to invited users outside the organization who access it over the Internet. WAN BN extranet intranet MAN

extranet

The American National Standards Institute: is the coordinating organization for the United States' national system of standards is a professional society in the U.S. whose standards committees focus on local area network standards sets the standards that govern how much of the Internet will operate is an agency that develops federal information processing standards for the federal government makes technical recommendations about global telephone rates

is the coordinating organization for the United States' national system of standards

The _________ layer is responsible for routing of messages from the sender to the final destination. data communication layer resident layer application layer network layer physical layer

network layer

A(n) _____________ is a set of rules that determine what a layer would do and provides a clearly defined set of messages that software at the layer needs to understand. agreement standard protocol regulations policy

protocol

Which is not a function of the physical layer: transmission of bits. defining the rules by which one and zeroes are transmitted. providing error-free transmission of data. providing the physical connection between sender and receiver. specifying the type of connection and type of signals, waves or pulses that pass though it.

providing error-free transmission of data.

In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model. data link and network session, presentation and application application layer application and presentation network, transport and presentation

session, presentation and application

The three stages of the de juro standardization process are ______________________. specification, identification of choices and acceptance. planning, implementing and acceptance. brainstorming, identification and implementing. specification, formalization, and acceptance. none of the above.

specification, identification of choices and acceptance.

Which of the following is not a function of the data link layer? deciding when to transmit messages over the media formatting the message by indicating where messages start and end, and which part is the address detecting and correcting any errors that have occurred in the transmission of the message specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it controlling the physical layer by determining when to transmit

specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it

The function of the file server is to : store data and software programs that can be used by client computers on the network. manage all printing requests from clients on the network. transfer e-mail messages to other servers on the network. store HTML documents for an Internet or intranet web site. coordinate the communication of client and servers on the network.

store data and software programs that can be used by client computers on the network.

Which layer of the OSI model is responsible for ensuring that all packets sent are received by the destination station by dealing with end-to-end issues? presentation Layer transport Layer physical Layer session Layer application Layer

transport Layer