Description : A _________ network is across between a circuit-switchednetworkand a datagram network. It has some characteristics ofboth. A) virtual-circuit B) packet-switched C) frame-switched D) none of the above
Last Answer : virtual-circui
Description : In _________, resources areallocatedon demand. A) datagram switching B) circuit switching C) frame switching D) none of the above
Last Answer : datagram switching
Description : In _______ there are no setup or teardown phases. A) datagram switching B) circuit switching C) frame switching D) none of the above
Description : A network is a cross between a circuit-switched network and a datagram network. It has some characteristics of both. a. virtual-circuit b. packet-switched c. None of the Given d. frame-switched
Last Answer : a. virtual-circuit
Description : In __________, eachpacket is treatedindependentlyof all others. A) datagram switching B) circuit switching C) frame switching D) none of the above
Description : In _______, the resources need to bereserved during the setup phase; the resources remain dedicated for the entire durationof data transfer phase until the teardownphase. A) datagram switching B) circuit switching C) frame switching D) none of the above
Last Answer : circuit switching
Description : Which of the following approaches to switching share networks resource? a. Circuit switching b. Packet switching c. Both A and B d. None of these
Last Answer : b. Packet switching
Description : _____ is used for transmission of packets in the cellular switched architecture. a) Packet switching techniques b) Circuit switching techniques c) Packet and circuit switched technique d) Datagram technique
Last Answer : a) Packet switching techniques
Description : Packet-switched networks can alsobe divided into ______subcategories: virtual-circuit networks and datagram networks A) four B) three C) two D) five
Last Answer : two
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 : Which one of the following statements is FALSE? a. Packet switching leads to better utilization of bandwidth resources than circuit switching. b. Packet switching results in less variation ... than circuit switching d. Packet switching can lead to reordering unlike in circuit switching
Last Answer : Packet switching results in less variation in delay than circuit switching.
Description : The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method. a) Packet switching b) Circuit switching c) Line switching d) Frequency switching
Last Answer : b) Circuit switching
Description : What is circuit switching and packet switching?
Last Answer : Circuit Switching is a strategy for switching data through a network. It involves establishing a dedicated path (circuit) between the source and destination. Packet Switching is also a ... the switch interconnects. It uses store and forward switching of discrete data units called packets.
Description : Inthe _________ method, a special packet called a ______ circulates through the ring. A) reservation: control frame B) polling: poll request C) token passing: token D) none of the above
Last Answer : token passing: token
Description : Which of the following is anecessary part of the IPv6 datagram? A) Base header B) Extension header C) Data packet from the upper layer D) (a) and (c)
Last Answer : Base header
Description : If the sender is a host and wants tosend a packet toanotherhost on another network, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : the IP address of therouter found inthe routing table
Description : f the sender is a host and wants tosend a packet toanotherhost on the samenetwork, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : hedestination IP address in the datagram header
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
Description : For which one of the following reasons does Internet Protocol (IP) use the time-to- live (TTL) field in the IP datagram header? a. Ensure packets reach destination within that time b. ... packets from looping indefinitely d. Limit the time for which a packet gets queued in intermediate routers.
Last Answer : c. Prevent packets from looping indefinitely
Description : Which among the below stated datagram discard code fields in ICMP is/are generated if a router fails to forward a packet due to administrative filtering? a. Source Route Failed b. Communication Administratively Prohibited c. Host Precedence Violation d. Precedence Cut-off in Effect
Last Answer : b. Communication Administratively Prohibited
Description : State weather the following statement is true or false for IPV6 Addressing 1). IPV6 is a routable protocol that addresses, routes, fragments, and reassembles packets 2).IPV6 is a connectionless, unreliable datagram protocol. 3). ... C. 1. false, 2. false, 3. false D. 1.false, 2. true, 3. true
Last Answer : A. 1. True, 2. true, 3. true
Description : In datagram subnet new route is chosen ………………… (A) for every packet sent (B) for first and last packet sent (C) only for the first packet (D) for the packet which is not transmitted
Last Answer : (A) for every packet sent
Description : In___________ thereis alwaysa transition at the middle of the bit, but thebit values are determined at the beginningof the bit. If the nextbit is 0, there is a transition; if the next bit is 1, there is none. A) Manchester B) differential Manchester C) both (a) and (b) D) neither (a) nor (b)
Last Answer : differential Manchester
Description : In IPv4, when a datagram is encapsulated in a frame, the total sizeof the datagram must beless thanthe _______. A) MUT B) MAT C) MTU D) noneof the above
Last Answer : MTU
Description : Which of the following technique isused for encapsulation? A. a technique used inbest-effort delivery systems toavoid endlessly loopingpackets. B. a technique used by protocols in which a lower level ... network that cannothandle the originaldatagram size D. All of theabove E. None of the above
Last Answer : a technique used by protocols in which a lower level protocol accepts a message from ahigher level protocol and places it in the data portion of the low level frame
Description : Which of the following technique isused for fragment? A. a technique used inbest-effort delivery systems toavoid endlessly loopingpackets B. a technique used by protocols in which a lower level protocol ... network that cannothandle the originaldatagram size D. All of theabove E. None of the above
Last Answer : one of the pieces that results when an IP gateway divides an IP datagram into smallerpieces for transmission acrossa network that cannothandle the originaldatagram size
Description : The data unit in the TCP/IP layer called a ..... A) Message B) Segment C) Datagram D) Frame
Last Answer : D) Frame
Description : The protocol data unit (PDU) for the application layer in the Internet stack is? a. Datagram b. Frame c. Message d. Segment
Last Answer : c. Message
Description : The protocol data unit PDU for the Transport layer in the Internet stack is A. Segment B. Datagram C. Message/Data D. Frame
Last Answer : A. Segment
Description : The protocol data unit(PDU) for the application layer in the Internet stack is (A) Segment (B) Datagram (C) Message/Data (D) Frame
Last Answer : (C) Message/Data
Description : The taskof moving the packet from theinput queue to the output queuein a router is done by_________. A) input and output ports B) routing processor C) switching fabrics D) none of the above
Last Answer : switching fabrics
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 : Explain the two approaches of packet switching techniques.
Last Answer : _ Datagram approach _ Virtual circuit approach _ Switched virtual circuit(SVC) _ Permanent virtual circuit(PVC) _ Circuit – switched connection versus virtual – circuit connection _ Path versus route _ Dedicated versus shared
Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above
Last Answer : only when no error occurs at the transmission level
Description : IP is _________ datagram protocol. A) an unreliable B) a connectionless C) botha and b D) noneof the above
Last Answer : botha and b
Description : DDP stands for _________ a. Datagram Delivery Protocol b. Device Delivery Protocol c. Datagram Device Protocol d. Device Datagram Protocol
Last Answer : a. Datagram Delivery Protocol
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 : An IGMP packet is carried in an __________ packet. A) UDP B) IP C) Ethernet frame D) noneof the above
Last Answer : IP
Description : Which of the following statements is TRUE? a. Both Ethernet frame and IP packet include checksum fields b. Ethernet frame includes a checksum field and IP packet includes a CRC field c. Ethernet ... and IP packet includes a checksum field d. Both Ethernet frame and IP packet include CRC fields
Last Answer : Ethernet frame includes a CRC field and IP packet includes a checksum field
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 : Which of the following term describes PDU encapsulated at Transport Layer? a. Frame b. Packet c. Data d. Segment
Last Answer : d. Segment
Description : RPB guarantees that eachdestinationreceives _________ of the packet. A) one copy B) no copies C) multiplecopies D) none of the above
Last Answer : one copy
Description : The network layer in the Internet isdesigned as a __________network. A) virtual-circuit B) datagram C) circuit-switched D) none of the above
Last Answer : datagram
Description : In a ________ network, twotypes of addressing are involved: global and local. A) virtual-circuit B) datagram C) circuit-switched D) none of the above
Last Answer : virtual-circuit
Description : A switched WAN is normally implemented as a _______ network. A) virtual-circuit B) datagram C) circuit-switched D) none of the above
Description : The network layer in the Internet is designed as anetwork. a. datagram b. none c. virtual-circuit d. circuit-switched
Last Answer : a. datagram
Description : In computer networks _________ is a characteristic that a flow needs where Lack of it means losing a packet or acknowledgment, which entails retransmission. A. Reliability B. Delay C. Jitter D. Bandwidth
Last Answer : A. Reliability
Description : The most popular technology in time-division switching is called the _________. A) STI B) ITS C) TSI D) none of the above
Last Answer : TSI
Description : . Internet works on packet switching circuit switching both packet switching and circuit switching None of the Above
Last Answer : packet switching