Description : A ________ bridge can forward and filter frames and automatically build its forwarding table
Last Answer : transparent
Description : Which feature of Go Back N ARQ mechanism possesses an ability to assign the sliding window in the forward direction? a. Control Variables b. Sender Sliding Window c. Receiver Sliding Window d. Resending of frames
Last Answer : b. Sender Sliding Window
Description : Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion? A. Control Variables B. Sender Sliding Window C. Receiver Sliding Window D. Resending of frames
Last Answer : B. Sender Sliding Window
Description : A ________is a device in which the stations are completely unaware of its existence. A) passive hub B) repeater C) simple bridge D) transparent bridge
Last Answer : transparent bridge
Description : RPF eliminates the ________ in theflooding process. A) forwarding B) backwarding C) flooding D) none of the above
Last Answer : none of the above
Description : Which intermediaries are more likely to get involved during the transfer function of an e-mail system? a. Storage and forwarding of e-mail for certain addresses b. Act as gateways to other e-mail or messaging systems c. Both a & b d. None of the above
Last Answer : c. Both a & b
Description : ICMP is primarily used for __________ a. error and diagnostic functions b. addressing c. forwarding d. routing
Last Answer : a. error and diagnostic functions
Description : IEEE 802.1d specification, defines _________criteria for a transparent bridges. A) two B) three C) four D) none of the above
Last Answer : three
Description : The RTS and CTS frames in CSMA/CA ____ solvethe hidden stationproblem. The RTS and CTS frames in CSMA/CA ____ solve the exposed station problem. A) can; cannot B) cannot; can C) can; can D) cannot; cannot
Last Answer : can; cannot
Description : The IEEE 802.11 wireless LANs use ________ types of frames. A) four B) five C) six D) none of the above
Description : In________framing, we need adelimiter (flag) to define the boundary of two frames. A) fixed-size B) variable-size C) standard D) none of the above
Last Answer : variable-size
Description : In_______framing, there isno need for defining the boundariesof frames. A) fixed-size B) variable-size C) standard D) none of the above
Description : In Go-Back-N ARQ, if frames 4,5, and 6 are received successfully, thereceiver may send an ACK _______ to thesender. A) 5 B) 6 C) 7 D) any of theabove
Last Answer : 7
Description : In Stop-and-Wait ARQ, we use sequence numbers to number the frames. The sequence numbers are based on __________arithmetic. A) modulo-2 B) modulo-4 C) modulo-m D) none of the above
Last Answer : modulo-2
Description : Inthe _________ protocol weavoid unnecessary transmissionby sending only frames that are corrupted. A) Stop-and-Wait ARQ B) Go-Back-N ARQ C) Selective-Repeat ARQ D) none of the above
Last Answer : Selective-Repeat ARQ
Description : Inthe _________Protocol, ifno acknowledgment for aframe has arrived, we resend all outstanding frames. A) Stop-and-Wait ARQ B) Go-Back-N ARQ C) Selective-Repeat ARQ D) none of the above
Last Answer : Go-Back-N ARQ
Description : Inthe _____ Protocol, the sender sends its frames oneafter another with noregard to the receiver. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ
Last Answer : Stop-and-Wait B) Simplest
Description : SONET sends ________ frames per second A) 1000 B) 2000 C) 4000 D) 8000
Last Answer : 2000
Description : Frames from oneLAN can be transmitted to anotherLAN viathe device A. Router B. Bridge C. Repeater D. Modem
Last Answer : Bridge
Description : The probability thata singlebit will be inerror on a typical public telephone lineusing 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error ratefor a communicationline using 9-bit frames is ... to A. 0.003 B. 0.009 C. 0.991 D. 0.999 E. None of the above
Last Answer : 0.009
Description : If link transmits 4000 frames per second and each slot has 8 bits, the transmission rate of circuit of this TDM is ______. a. 64 Kbps b. 32 Mbps c. 32 Kbps d. 64 MbpS
Last Answer : c. 32 Kbps
Description : UDP packets are called as _________ a. Segments b. Checksum c. Frames d. Datagrams
Last Answer : d. Datagrams
Description : A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per minute with each frame carrying an average of 10,000 bits. What is the throughput of this network ? a. 1 Mbps b. 2 Mbps c. 10 Mbps d. 12 Mbps
Last Answer : b. 2 Mbps
Description : A network with bandwidth of 10 Mbps can pass only an average of 15,000 frames per minute with each frame carrying an average of 8,000 bits. What is the throughput of this network? a. 2 Mbps b. 60 Mbps c. 120 Mbps
Last Answer : a. 2 Mbps
Description : A pure ALOHA Network transmits 200 bit frames using a shared channel with 200 Kbps bandwidth. If the system (all stations put together) produces 500 frames per second, then the throughput of the system is ______. a. 0.384 b. 0.184 c. 0.286 d. 0.58
Last Answer : b. 0.184
Description : The network layer is concerned with __________ of data. a. bits b. frames c. packets d. bytes
Last Answer : c. packets
Description : In an Ethernet local area network, which one of the following statements is TRUE ? a. A station stops to sense the channel once it starts transmitting a frame. b. The purpose ... collision is detected. d. The exponential backoff mechanism reduces the probability of collision on retransmissions
Last Answer : The exponential backoff mechanism reduces the probability of collision on retransmissions
Description : A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of ... is lost, the sender throughput is __________ bytes/second. a. 2500 b. 2000 c. 1500 d. 500
Last Answer : a. 2500
Description : The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channel capacity. Assuming that processing ... maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D
Last Answer : c. C
Description : Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s. b. 2 c. 2.5 d. 5
Last Answer : b. 2
Description : Which category of HDLC frames undergoes error and flow control mechanisms by comprising send and receive sequence numbers? a. Uframes b. Iframes c. Sframes d. All of the above
Last Answer : Sframes
Description : Which ARQ mechanism deals with the transmission of only damaged or lost frames despite the other multiple frames by increasing the efficiency & its utility in noisy channels? a. GoBackN ARQ b. Selective Repeat ARQ c. StopandWait ARQ d. All of the above
Last Answer : b. Selective Repeat ARQ
Description : Which provision can resolve / overcome the shortcomings associated with duplication or failure condition of Stop and Wait Automatic Repeat Request protocol especially due to loss of data frames or non reception ... message b. Provision of checksum computation c. Both a & b d. None of the above
Last Answer : Provision of sequence number in the header of message
Description : State weather the following statement is true or false for Token Bus 1).It is a linear or tree- shaped cable onto which the stations are attached. 2). the token propagates around the logical ring, with only the token holder ... 3. false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false
Last Answer : D. 1. true, 2. true, 3. false
Description : The _______ layer provides a well defined service interface to the network layer, determining how the bits of the physical layer are grouped into frames A. Data Link B. Physical C. Network D. Session
Last Answer : A. Data Link
Description : The network layer encapsulates the data into _______of data. A. bits B. frames C. packets D. bytes
Last Answer : C. packets
Description : In _______ framing, there is no need for defining the boundaries of frames. A. fixed-size B. variable-size C. standard D. none of the above
Last Answer : A. fixed-size
Description : The network layer is concerned with __________ of data. a) bits b) frames c) packets d) bytes
Last Answer : c) packets
Description : The data link layer takes the packets from _________ and encapsulates them into frames for transmission. a) network layer b) physical layer c) transport layer d) application layer
Last Answer : a) network layer
Description : FDDI stands for A) Fiber Distributed Data Interface B) Fiber Data Distributed Interface C) Fiber Dual Distributed Interface D) Fiber Distributed Data Interface
Last Answer : A) Fiber Distributed Data Interface
Description : What is Value Added Tax (VAT)? (1) A simple, transparent, easy to pay tax imposed on consumers (2) A new initiative taken by the Government to increase the tax-burden of high income groups (3) A ... like, surcharge, turnover tax, etc. (4) A new tax to be imposed on the producers of capital goods
Last Answer : (3) A single tax that replaces State taxes like, surcharge, turnover tax, etc. Explanation: A value added tax (VAT) is a form of consumption tax. A VAT is like a sales tax in that ... under the single tax system based primarily or exclusively on one tax, typically chosen for its special properties.
Description : What is Value Added Tax (VAT) ? (1) A simple, transparent, easy to pay tax imposed on consumers (2) A new initiative taken by the Government to increase the tax-burden of high income groups (3) A ... like, surcharge, turnover tax, etc. (4) A new tax to be imposed on the producers of capital goods
Last Answer : A single tax that replaces State taxes like, surcharge, turnover tax, etc.
Description : The concept dual nature of Matter was put forward by?
Last Answer : Louis de-Broglie
Description : How do dual-motor dual capstan drives maintain a constant tape tension while operating in either a forward or reverse direction?
Last Answer : Each capstan is driven by its own motor. It maintains tape tension by slowing down one of the motors. When the tape motion is reversed, the opposite motor is slowed down.
Description : Where is a good place to buy simple, cheap photo frames online?
Last Answer : Do you have an IKEA nearby? They run great deals on frames.
Description : A compound truss may be formed by connecting two simple rigid frames, by (A) Two bars (B) Three bars (C) Three parallel bars (D) Three bars intersecting at a point
Last Answer : (B) Three bars
Description : Stress in members of statically determinate simple frames, can be determined by (A) Method of joints (B) Method of sections (C) Graphical solution (D) All the above
Last Answer : (D) All the above
Description : In ________ error correction, the receiver asks thesender tosend thedata again. A) backward B) retransmission C) forward D) none of the above
Last Answer : retransmission
Description : In ________ error correction, the receiver correctserrors without requestingretransmission. A) backward B) onward C) forward D) none of the above
Last Answer : forward
Description : An IP datagram of size 1000 bytes arrives at a router. The router has to forward this packet on a link whose MTU (maximum transmission unit) is 100 bytes. Assume that the size of the IP header is 20 bytes ... the IP datagram will be divided into for transmission is : a. 10 b. 50 c. 12 d. 13
Last Answer : d. 13