Progression: Field Tech IV - V Conventional Questions & Answers

What term describes the number of wave crests that pass a fixed point during a particular period of time? - ANSWERSFrequency In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously". - ANSWERSHalf-duplex Two CPUs have the same size data bus. Which one will process data faster? - ANSWERSThe one with a higher clock speed This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used by only one network interface card anywhere in the world. - ANSWERSMedia access control address (MAC) Which is a network management and utility software that is typically used by network administrators and information systems personnel when the network is unused or lightly used, often in the middle of the night? - ANSWERSBackup and recovery utilities. Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding as well as an additional copper mesh shield? - ANSWERS10Base5 cable According to 10BaseT wiring rules, what is the maximum segment length without a repeater? - ANSWERS100 m When light travels through a fiber-optic cable, the change in refractive index causes the light to refract off which of the following? - ANSWERSThe boundary between the core and the cladding Which of the following requires a laser transmitter? - ANSWERSSingle-mode fiber In what part of a building would you typically find punch-down blocks? - ANSWERSWiring closet Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic techniques used whenever different layers of protocols work together. What is the fourth? - ANSWERSSegmentation Which type of address is unique anywhere in the world? - ANSWERSNIC address Which layer of the OSI protocol stack handles frames? - ANSWERSData Link Which of the following best represents a logical address? - ANSWERSIPv6 In data networking, ________ describes the characteristics of a transmission link, such as throughput, setup time, or accuracy. - ANSWERSQuality of service (QoS) Transport layer processes work with transmission channels using multiplexing and ___________ techniques. - ANSWERSParallelization Which of the following protocols is commonly used in the Session Layer? - ANSWERSAdvanced Program-to-Program Communications (APPC) What is the binary equivalent to the decimal number "14"? - ANSWERS Data security, data compression, and ________ are the three main services that the Presentation Layer provides. - ANSWERSData representation Which of the following is an example of a Transport Layer protocol? - ANSWERSTransmission Control Protocol (TCP) Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following? - ANSWERSAn informal conversation in which each person speaks when the opportunity presents itself, but only one person speaks at any time The IEEE 802.3 standard defines which of the following? - ANSWERSEthernet What Fast Ethernet standard can send Ethernet frames at 100 Mbps over Category 5E UTP or fiber optic cabling? - ANSWERSIEEE 802.3u What enables the transport of computer data over analog telephone local loops? - ANSWERSTelephone modems. Which of the following describes the bandwidth of a single FT1? - ANSWERS64 Kbps How much bandwidth in a T1 circuit is allocated for control information? - ANSWERS8 Kbps. What device is required to attach a non-ISDN device to an ISDN network? - ANSWERSTerminal adaptor (TA) Which of the following is a connection-oriented packet-switched network service that works at the Data Link Layer? - ANSWERSFrame relay What is a private, internal network that uses Internet applications, tools, and protocols? - ANSWERSIntranet Which of the following is implemented over a public telecommunication switching system, such as a frame relay cloud? - ANSWERSA public network When a repeater receives a bit pattern at its input, what does it do? - ANSWERSIt generates the same pattern at its output, at a higher power level Which of the following best represents a hub? - ANSWERSA repeater Forwarding, Learning, and _______ are three important functions provided by a bridge. - ANSWERSFiltering If a network contains an active loop, what problem can occur? - ANSWERSThe network becomes congested with duplicate frames Which of the following is defined as a set of device-to-device paths through the network such that there is one, and only one, path between any two devices? - ANSWERSSpanning Tree Protocol What is the main difference between a standard switch and a bridge? - ANSWERSSwitches effectively multiply the network's bandwidth Bridges and Layer 2 switches filter traffic in which way? - ANSWERSBy evaluating the destination MAC address in each frame and switching each frame to the port that leads to the destination frame address What happens when a router forwards data packets from one network to another network? - ANSWERSThe destination address of the router in the framed packet is removed and the packet header address is inspected by the router to determine the next destination address to encapsulate around the packet. In large networks, how do most routers get their routing tables? - ANSWERSEach router automatically builds and maintains its own routing table ________ is an application that manages Internet resources and transmits them in response to requests from Web browsers. - ANSWERSHTTP server