Description : A(n) ______ is theinterface between auser and an ATM switch. A) UNI B) NNI C) NNN D) None of the above
Last Answer : UNI
Description : Which of the following statements accurately describe the differences between a hub and a switch? Check all that apply. A. A switch remembers which devices are connected on each interface, while a hub does not. B. A hub is a ... versions of switches. a. A,B b. A,B,C c. A,B,C,D d. A,C,D
Last Answer : b. A,B,C
Description : The VPIof an NNI is _______ bits in length. A) 8 B) 12 C) 16 D) 24
Last Answer : 12
Description : _________is just aconnector. A) An activehub B) A passive hub C) either (a)or (b) D) neither (a)nor (b)
Last Answer : A passive hub
Description : The VPIof a UNI is _______ bits in length. A) 8 B) 12 C) 16 D) 24
Last Answer : 8
Description : Trypanosoma species can be culture in vitro on a number of medium including C A. NNN mediu B. Weinmann’s medium C. Both D. None
Last Answer : Both
Description : A network router joins two _________ together? A. Computers B. Switches C. Networks D. Gateway
Last Answer : C. Networks
Description : A ________ switch combines crossbar switches inseveral (normally three) stages. A) multistage B) multiple crossbar C) multiple path D) none of the above
Last Answer : multistag
Description : A ________network is made of a set of switches connected by physical links, in which each link is divided into nchannels. A) line-switched B) frame-switched C) circuit-switched D) none of the above
Last Answer : circuit-switched
Description : In Frame Relay, when a _____ is selected, the correspondingtable entry is recorded for all switches by the administrator A) PVC B) SVC C) either (a) or (b) D) neither (a) nor (b)
Last Answer : PVC
Description : The _____ houses the switches in token ring. A. transceiver B. nine-pin connector C. MAU D. NIC E. None of the above
Last Answer : MAU
Description : Network layer protocol exits in _________ a. Host b. Switches c. Packets d. Bridges
Last Answer : a. Host
Description : The network layer contains which hardware device? a. Routers, Bridges b. Bridges only c. Bridges and switches d. Routers, Bridges and Switches
Last Answer : d. Routers, Bridges and Switches
Description : Congestion in a network or internetwork occurs because routers and switches have _______. A. tables B. queues C. crosspoints D. none of the above
Last Answer : B. queues
Description : What is the difference between a switch and a hub? A. Switches operate at physical layer while hubs operate at data link layer B. Switches operate at data link layer while hubs operate at ... hubs operate at physical layer D. Switches operate at transport layer while hubs operate at physical layer
Last Answer : C. Switches operate at data link layer while hubs operate at physical layer
Description : Most packet switches use this principle ____________ a) Stop and wait b) Store and forward c) Store and wait d) Stop and forward
Last Answer : b) Store and forward
Description : In ATM, connection between two endpoints is accomplishedthrough_______. A) TPs B) VPs C) VCs D) all of theabove
Last Answer : all of theabove
Description : The ATM standard defines______ layers. A) two B) three C) four D) five
Last Answer : three
Description : In ATM,______ is for packets requiring no sequencing and noerror control mechanism. A) AAL1 B) AAL2 C) AAL3/4 D) AAL5
Last Answer : AAL5
Description : In ATM,_____ is for conventionalpacket switching(virtual-circuit approachor datagram approach). A) AAL1 B) AAL2 C) AAL3/4 D) AAL5
Last Answer : AAL3/4
Description : In ATM,_______is for short packets. A) AAL1 B) AAL2 C) AAL3/4 D) AAL5
Last Answer : AAL2
Description : In ATM,______ is for constant-bit-ratedata. A) AAL1 B) AAL2 C) AAL3/4 D) AAL5
Last Answer : AAL1
Description : In ATM, the _____ layer defines thetransmission medium,bit transmission,encoding, and electrical-to-optical transformation. A) physical B) ATM layer C) AAL D) none of the above
Last Answer : physical
Description : In ATM, the ______ layerprovides routing, traffic management, switching, and multiplexing services. A) physical B) ATM C) AAL D) none of the above
Last Answer : ATM
Description : In ATM, the _______layeraccepts transmissions from upper-layer servicesand maps them into ATM cells. A) physical B) ATM C) AAL D) none of the above
Last Answer : AAL
Description : ______ eliminates the varying delay times associated withdifferent-size packets. A) X.25 B) Frame Relay C) ATM D) all of theabove
Description : The ATM data packet is acell composed of ______bytes. A) 40 B) 50 C) 52 D) 53
Last Answer : 53
Description : In ATM,a virtual connection is definedby _________. A) VPI B) VCI C) DLCI D) acombination of (a) and (b)
Last Answer : acombination of (a) and (b)
Description : ______ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T. A) X.25 B) Frame Relay C) ATM D) none of the above
Description : ________ is a virtual-circuit wide-area network that was designed in response to demands fora new type of WAN in thelate1980s and early 1990s. A) X.25 B) Frame Relay C) ATM D) none of the above
Last Answer : Frame Relay
Description : Choose the Protocols working in the Data Link Control Layer of OSI model below. a. ATM (Asynchronous Transfer Mode), Frame Relay b. HDLC (High Level Data Link Control), SDLC (Synchronous Data Link Control) c. ARP (Address Resolution Protocol), IEEE802.3 d. All the above
Last Answer : d. All the above
Description : Which command does not show that two devices are failing to route packets between them successfully? A. show interface B. trace C. telnet D. ping
Last Answer : show interface
Description : Data structure suitable for the application is discussed in ? data design architectural design procedural design interface design
Last Answer : data design
Description : Design phase includes? data, architectural and procedural design only architectural, procedural and interface design only data, architectural and interface design only data, architectural, interface and procedural design
Last Answer : data, architectural, interface and procedural design
Description : What would be the proper command to set a DCE clock rate of 56k for a serial interface? A. Router (config) # clockrate 56000 B. Router# clockrate 56000. C. Router (config-if) #clock rate 56000 D. Router (config-if) # clockrate 56k
Last Answer : Router (config-if) #clock rate 56000
Description : Interface electronic circuit is used to interconnect I/O devices to a computer’s CPU or a. ALU b. Memory c. Buffer d. Register
Last Answer : Memory
Description : The system unit of a personal computer typically contains all of the following except: a. Microprocessor b. Disk controller c. Serial interface d. Modem
Last Answer : Modem
Description : Which of the following magazines covers only the IBM PC and its compatibles? a. Byte b. PC Magazine c. Personal Computing d. Interface Age
Last Answer : PC Magazine
Description : A protocol is a set of rules governing a time sequence of events that must take place a. between peers b. between an interface c. between modems d. across an interface
Last Answer : between peers
Description : What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard? a. 4 b. 2 c. 6 d. 3 3. none of the above
Last Answer : 3
Description : The x.25 standard specifies a a. technique for start-stop data b. technique for dial access c. DTE/DCE interface d. data bit rate e. none of above
Last Answer : DTE/DCE interface
Description : What interface card do you need toconnect to a network? A) ISP card B) Wireless card C) Router D) NIC
Last Answer : NIC
Description : Each station on an Ethernet network has a unique _______ address imprinted onits network interface card (NIC). A) 5-byte B) 32-bit C) 48-bit D) none of the above
Last Answer : 48-b
Description : When theangle of incidenceis _______ the critical angle, the light beam bends along the interface. A) more than B) less than C) equal to D) none of the above
Last Answer : equal to
Description : IGMP helps a ________ router createand update a list of loyal members relatedto each router interface. A) broadcast B) unicast C) multicast D) noneof the above
Last Answer : multicast
Description : An enterprise solution withdata storage, a client interface and a security system isa(n) __________ system. A) 2-tier B) 3-tier C) 4-tier D) n-tier
Last Answer : 3-tier
Description : Data aresent over pin _____ of the EIA-232 interface. A. 2 B. 3 C. 4 D. All of theabove
Last Answer : 2
Description : Computers cannot communicate with each other directly over telephone lines because they usedigitalpulses whereas telephone lines useanalog sound frequencies. What is the name of the device which permits digital to analog ... A. Interface B. Modem C. Attenuation D. Teleprocessor E. None of the above
Description : Which layers of the OSI determines the interface often system with the user? A) Network B) Application C) Data link D) Session
Last Answer : B) Application