ITN 100 Final Exam 2022 Questions and Answers

A ___________ is similar to an intranet in that it uses Internet technologies, but is developed for users outside the organization - ANSWER Extranet In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model - ANSWER session, presentation and application Which of the following is true about ISO - ANSWER -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!!! The three stages of the de juro standardization process are ______________________ - ANSWER specification, identification of choices and acceptance 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 - ANSWER True Which is not a function of the physical layer: - ANSWER providing error-free transmission of data According to John Chambers, CEO of Cisco (a leading networking technology company), the information age is the second Industrial Revolution - ANSWER 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 - ANSWER True Which of the following is not an application layer standard? - ANSWER T1 A local area network is - ANSWER 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 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 - ANSWER True The primary reason for networking standards is to: - ANSWER ensure that hardware and software produced by different vendors can work together Which of the following is not an important future trend in communication and networking? - ANSWER development of online batch systems The network layer is responsible for routing messages from the source computer to the destination computer - ANSWER True Which of the following is a term used to group together the physical and data link layers? - ANSWER Hardware layers Which of the following is not a function of the data link layer? - ANSWER specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it 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 - ANSWER True A backbone network is - ANSWER 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? - ANSWER application The application layer is the seventh layer of the Internet model and provides the end user's access to the network - ANSWER False The _________ layer is responsible for routing of messages from the sender to the final destination - ANSWER network layer Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer - ANSWER True The function of the file server is to - ANSWER Correct 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? - ANSWER transport Layer The American National Standards Institute (ANSI) - ANSWER is the coordinating organization for the United States' national system of standards Which of the following is not true about de juro standards? - ANSWER They are always developed before de facto standards. 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 - ANSWER protocol ___________ is an orderly close to a dialogue between end users - ANSWER Session termination 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 - ANSWER extranet Which standards body is responsible for the development of local area network (LAN) standards? - ANSWER IEEE In a host-based system with a mainframe, upgrades to the host are _____________ - ANSWER Lumpy Which of the following is not a general function by any application program? - ANSWER application access storage With a client-based network, one fundamental problem is that: - ANSWER all data on the server must travel to the client for processing _________ is an application program function that deals with storing and retrieving data - ANSWER data storage The standard protocol for communication between a Web browser and a Web server is the web protocol - ANSWER False ____________ is not an important middleware standard - ANSWER Asynchronous Transfer Mode (ATM) Scalability refers to the ability to increase or decrease the capacity of the computing infrastructure in response to changing capacity needs - ANSWER True In the three tier architecture the software on the client computer is responsible for____________ - ANSWER presentation logic Cloud computing is now available on the client side (i.e. the desktop) - ANSWER True An N-tiered architecture - ANSWER is generally more "scalable" than a three-tiered architecture Which of the following is not a user agent package? - ANSWER Microsoft Word To use the Web, each client computer requires a data link layer software package called a Web browser - ANSWER False ________ is the presentation of information to the user and the acceptance of the user's commands - ANSWER presentation logic To get a page from the Web, a user must type in a URL, which stands for: - ANSWER Uniform Resource Locator As the demand for more and more network applications grow; host-based computing becomes the best solution - ANSWER False A "thin client" approach places most of the application logic on the client - ANSWER False In a client-server network, _________ gets software from different vendors to work together - ANSWER middleware The acronym, MIME, refers to: - ANSWER multipurpose internet mail extension The protocol that makes it possible for a Macintosh web browser to be able to retrieve a Web page from a Microsoft Web server is called _____________________ - ANSWER Hypertext Transfer Protocol There are optional and required parts of an HTTP request. They are: - ANSWER request line, request header, request body The ________________ cloud deployment model provides the highest levels of control, privacy and security - ANSWER private With the "thin client" architecture, when an application changes, only the _________ with the application logic needs to be updated - ANSWER server A(n) __________ is the way in which the functions of the application layer software are spread among the clients and servers in the network - ANSWER application architecture The World Wide Web was conceived at University of Utah as part of the development of the Internet - ANSWER False Host-based and client-based networks are similar in that the client computer performs most of the work - ANSWER False A ________ is a group of computers linked together so that they act as one computer - ANSWER server farm IMAP (Internet Message Access Protocol): - ANSWER permits an e-mail message to remain stored on the mail server even after they have been read by a client computer Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages. - ANSWER True The four general functions of any application program are: data storage, data access logic, application logic and presentation logic - ANSWER True An application program function is __________, or the processing required to access data - ANSWER data access logic A server farm is a group of computers that are linked together so they act as a one computer - ANSWER True The earliest data communications networks were client-server networks - ANSWER False One of the most frequently used Telnet applications is - ANSWER PuTTY The two functions of middleware are to: 1) provide a standard way of communicating that can translate between software from different vendors, and 2) manage the message transfer between clients and servers so that clients do not need to 'know' which server contains the application's data - ANSWER True The idea for a special hypertext network, called the World Wide Web, was conceived of by: - ANSWER Tim Berners-Lee at the European Laboratory for Particle Physics (CERN) in 1989 With the two-tier client-server architecture, the server is responsible for the ________ logic - ANSWER data access A request header for an HTTP request starts with a command, such as GET, and ends with the HTTP version number that the browser understands - ANSWER False ______________, or the algorithms or business logic programmed into the application, can be simple or complex depending on the application - ANSWER application logic Marc Andreessen led a team that developed the first graphical Web browser, which was called: - ANSWER Mosaic One disadvantage of the ____________ architecture is that places a greater load on the network - ANSWER n-tier Time division multiplexing is more efficient that frequency division multiplexing because the guardbands used in the frequency division multiplexing or not needed. - ANSWER True Radio, microwave and satellite are all examples of guided media. - ANSWER True The earliest type of fiber optic systems were: - ANSWER Multimode The _____________ of a circuit determines a circuit's capacity. - ANSWER bandwidth ____________ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0. - ANSWER modulation Nonreturn to zero is a type of unipolar signaling - ANSWER False Another term for the weakening of a signal over distance is: - ANSWER attenuation The room that contains the cable termination points and the distribution frames is referred to as - ANSWER telecommunications closet When sending four bits at a time using frequency modulation, the number of different frequency levels that would be needed would be _______. - ANSWER 16 _________ is the basic physical layout of the circuit. - ANSWER circuit configuration ____________ refers to the transmission characteristics of the circuit. - ANSWER logical circuit In a multipoint circuit configuration, each computer can use the circuit at the same time. - ANSWER False Baud rate is the number of bits transmitted per second. - ANSWER False Ethernet, a common LAN technology, uses Manchester encoding. - ANSWER True Frequency division multiplexing divides the circuit into a set of different time slots. - ANSWER False The predominant method of transferring information internally in a computer is via parallel mode. - ANSWER True Coding schemes are groups of bits that translate into the "alphabet" of any given system. - ANSWER True A codec converts an incoming digital signal to an analog signal for transmission over an analog network. - ANSWER False Multimode fiber is capable of longer transmission distances than single mode fiber. - ANSWER False The medium is the physical matter or substance that carries the voice or data transmission. - ANSWER True Fiber optic cable carries signals in traditional electrical form - ANSWER False When all bits of a character are transferred one after another, the bits are transferred in ___________ mode. - ANSWER serial ASCII is the least popular code for data communications. - ANSWER False If each sample uses 16 bits and the number of samples taken each second is 8000; then the transmission speed on the circuit is? - ANSWER 128 Kbps Which of the following statements is correct? - ANSWER Serial transmission is slower than parallel transmission. With nonreturn to zero signaling, the voltage alternates between zero and a positive or negative voltage. - ANSWER False microwave transmission - ANSWER All of the above A(n) __________ circuit is another name for a multipoint configuration. - ANSWER shared Propagation delay is negligible with satellite transmission - ANSWER False Which is not true about point-to-point circuits? - ANSWER point-to-point circuits reduce the amount of cable required and use the circuit more efficiently than multipoint circuits. In general, networks designed to transmit primarily computer data are likely to be ________. - ANSWER digital The acronym, Modem, stands for _________________. - ANSWER modulator-demodulator ___________ is not a type of digital signaling technique. - ANSWER Data rate signaling