Description : The ______ layer is responsible for the movementof a signal from its optical source to its optical destination. A) section B) line C) path D) photonic
Last Answer : line
Description : The purpose of the _______is to provide flow and error control for the upper-layer protocols that actually demand theseservices A) MAC B) LLC C) LLU D) none of the above
Last Answer : LLC
Description : _______is the rateof change with respect totime. A) Amplitude B) Time C) Frequency D) Voltage
Last Answer : Time
Description : In ATM,_______is for short packets. A) AAL1 B) AAL2 C) AAL3/4 D) AAL5
Last Answer : AAL2
Description : A _______is defined as a small, fixed-size block of information. A) frame B) packet C) cell D) none of the above
Last Answer : cell
Description : A _______is an ARP thatacts on behalf of a set of hosts. A) ARP B) RARP C) proxy ARP D) noneof the above
Last Answer : proxy ARP
Description : A _______is a data communicationsystem withina building, plant,or campus, orbetween nearby buildings. A) MAN B) LAN C) WAN D) none of the above
Last Answer : LAN
Description : A stream line is (A) Fixed in space in steady flow (B) Always the path of particle (C) Drawn normal to the velocity vector at every point (D) A line connecting the mid points of flow cross-section
Last Answer : (A) Fixed in space in steady flow
Description : The sharing of a medium and its link by two or more devices is called _______. A) modulation B) encoding C) line discipline D) multiplexing
Last Answer : multiplexing
Description : A ______is the end-to-end portion of the network between two STS multiplexers. A) section B) line C) path D) none of the above
Last Answer : path
Description : The _______ layer corresponds to thephysical layer of the OSI model. A) section B) line C) path D) photonic
Last Answer : section
Description : The ______ layer is responsible for the movementof a signal across a physical section. A) section B) line C) path D) photonic
Description : The ____layer is responsible for the movement ofa signal across aphysical line. A) section B) line C) path D) photonic
Description : A _______ is a connecting devicethat operates in the physical and data link layers of theInternet model. A) repeater B) bridge C) router D) none of the above
Last Answer : bridge
Description : A repeater is a connecting devicethat operates in the _______ layer of theInternet model. A) physical B) data link C) network D) all of theabove
Last Answer : physical
Description : The most common typeof storage devices are– (A) persistent (B) optical (C) magnetic (D) flash (E) steel
Last Answer : flash
Description : Identify the non suitable medium for 802.3 ethernet? a. A thin coaxial cable b. A twisted pair cable c. A microwave link d. A fiber optical cable
Last Answer : c. A microwave link
Description : Which of the following cannot be used as a medium for 802.3 ethernet? a) A thin coaxial cable b) A twisted pair cable c) A microwave link d) A fiber optical cable
Last Answer : c) A microwave link
Description : . In _______ routing, the least cost routebetween any two nodes is theroute with the minimum distance. A) path vector B) distancevector C) link state D) none of the above
Last Answer : distancevector
Description : The Multicast Open Shortest Path First (MOSPF)protocol is an extension of the OSPF protocol that uses multicast routing to create source-based trees. The protocol is basedon _______ routing. A) distancevector B) link state C) path vector D) none of the above
Last Answer : link state
Description : In ________ routing, we assume that there is one node (or more) ineach autonomous system that acts on behalf of the entire autonomous system. A) distant vector B) path vector C) link state D) none of the above
Last Answer : path vector
Description : The Open Shortest Path First (OSPF)protocol is an intradomain routing protocolbased on _______ routing. A) distancevector B) link state C) path vector D) none of the above
Description : The _________ routing uses the Dijkstra algorithm to build aroutingtable. A) distancevector B) link state C) path vector D) none of the above
Description : The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing. A) distancevector B) link state C) path vector D) none of the above
Description : In ________, eachnode maintains avector (table)of minimum distances to every node. A) path vector B) distancevector C) link state D) none of the above
Description : Which of the following statements is correct for the use of packet switching? A. the subdivision of information into individuallyaddressed packets in conjunction with alternativerouting arrangementenabled the transmission path ... capacity could be achieved. D. All of theabove E. None of the above
Last Answer : All of theabove
Description : Which of the following routing algorithms can be used for network layer design? a. shortest path algorithm b. distance vector routing c. link state routing d. all of the mentioned
Last Answer : d. all of the mentioned
Description : The functions of a Logical Link Layer (LLC) are a. Error control b. Flow control c. Creating and managing the communication link between two devices with the help of the Transport layer. d. All the above
Last Answer : d. All the above
Description : The functions of a Logical Link Layer (LLC) are ___. A. Error control B. Flow control C. Creating and managing the communication link between two devices with the help of the Transport layer. D. All the above
Last Answer : D. All the above
Description : In the _______ method, the primary device controls the link; thesecondary devices follow its instructions. A) reservation B) polling C) token passing D) none of the above
Last Answer : polling
Description : In a ________ connection, three or more devices share a link. A) multipoint B) point-to-point C) (a) and(b) D) none of the above
Last Answer : multipoint
Description : In a _______ connection, more thantwo devices can share asingle link. A) point-to-point B) multipoint C) primary D) secondary
Description : The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format. a. network b. presentation c. transport d. data link
Last Answer : b. presentation
Description : Three or more devices share a link in ________ connection. a) Unipoint b) Multipoint c) Point to point d) Simplex
Last Answer : b) Multipoint
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 : In IPv6, the _______ field inthe baseheader restricts the lifetime ofa datagram. A) version B) next-header C) hoplimit D) neighbor-advertisemen
Last Answer : hoplimit
Description : In distance vector routing,each node periodically shares its routing table with_________ and whenever there is achange. A) every other node B) its immediate neighbors C) one neighbor D) none of the above
Last Answer : its immediate neighbors
Description : Which of the following is a transport layer protocol? a. stream control transmission protocol b. internet control message protocol c. neighbor discovery protocol d. dynamic host configuration protocol
Last Answer : a. stream control transmission protocol
Description : Which of the following is a transport layer protocol? A. stream control transmission protocol B. internet control message protocol C. neighbor discovery protocol D. dynamic host configuration protocol
Last Answer : A. stream control transmission protocol
Description : The physical layer provides __________ a. mechanical specifications of electrical connectors and cables b. electrical specification of transmission line signal level c. specification for IR over optical fiber d. all of the mentioned
Description : The physical layer provides __________ A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned
Last Answer : D. all of the mentioned
Description : What specifications does physical layer provides __________. A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned
Description : The physical layer provides __________ a) mechanical specifications of electrical connectors and cables b) electrical specification of transmission line signal level c) specification for IR over optical fiber d) all of the mentioned
Last Answer : d) all of the mentioned
Description : A streamline is (A) The line connecting the mid-points of flow cross-sections (B) Defined for uniform flow only (C) Drawn normal to the velocity vector at every point (D) Always the path of a particle
Last Answer : (C) Drawn normal to the velocity vector at every point
Description : In an optical fibre the signal is transmitted – (1) in a straight line path (2) In a curved path (3) due to total internal reflection (4) Due to refraction
Last Answer : (3) due to total internal reflection Explanation: Total internal reflection is the basic concept be-hind the optical fiber. Optical fiber employs the transmission of light down fibers of plastic ... refractive index to allow more light to be guided along the fiber through total internal refraction.
Description : In an optical fibre the signal is transmitted (1) in a straight line path (2) In a curved path (3) due to total internal reflection (4) Due to refraction
Last Answer : due to total internal reflection
Description : A communications device that combines transmissions from several I/O devices into one line is a a. concentrator b. modifier c. multiplexer d. full-duplex line
Last Answer : multiplexer
Description : Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard ... indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing
Last Answer : RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data
Description : Which of the following does not allow multiple uses or devices to share one communication line? a. doubleplexer b. multiplexer c. concentrator d. controller
Last Answer : concentrator
Description : Which of the following does not allow multiple users or devices toshare onecommunications line? A. doubleplexer B. multipplexer C. concentrator D. controller E. None of the above
Last Answer : doubleplexer