A subset of a network that includes all the routers but contains no loops is called ________
1.spanning tree
2. spider structure
3.spider tree
4.special tree
A _____ is a TCP name for a transport service access point.
1.port
2.pipe
3. node
4. protocol
Data communication system spanning states, countries, or the whole world is ______
1. LAN
2. WAN
3.MAN
4.PAN
In asynchronous serial communication the physical layer provides ______
1. start and stop signalling
2.flow control
3.both start & stop signalling and flow control
4.only start signalling
The physical layer is responsible for _______
1.line coding
2.channel coding
3.modulation
4.all of the mentioned
Transmission control protocol _______
1.is a connection-oriented protocol
2.uses a three way handshake to establish a connection
3.receives data from application as a single stream
4.all of the mentioned
Transport layer aggregates data from different applications into a single stream before passing it to _____
1.network layer
2.data link layer
3.application layer
4.physical layer
Which address is used to identify a process on a host by the transport layer?
1.physical address
2.logical address
3.port address
4.specific address
Which one of the following is a version of UDP with congestion control?
1.datagram congestion control protocol
2.stream control transmission protocol
3.structured stream transport
4.user congestion control protocol
A 4 byte IP address consists of _____
1. only network address
2.only host address
3.network address & host address
4.network address & MAC address
A single channel is shared by multiple signals by ______
1. analog modulation
2.digital modulation
3.multiplexing
4.phase modulation
An endpoint of an inter-process communication flow across a computer network is called _____
1. socket
2.pipe
3. port
4.machine
Automatic repeat request error management mechanism is provided by ________
1.logical link control sublayer
2.media access control sublayer
3. network interface control sublayer
4.application access control sublayer
Bits can be sent over guided and unguided media as analog signal by _____
1. digital modulation
2.amplitude modulation
3.frequency modulation
4.phase modulation
CRC stands for _______
1.cyclic redundancy check
2.code repeat check
3.code redundancy check
4.cyclic repeat check
Data communication system within a building or campus is________
1.LAN
2.WAN
3.MAN
4. PAN
Header of a frame generally contains ______
1. synchronization bytes
2.addresses
3. frame identifier
4.all of the mentioned
ICMP is primarily used for _______
1. error and diagnostic functions
2.addressing
3.forwarding
4.routing
In TDM, slots are further divided into _______
1.Seconds
2. Frames
3.Packets
4.Bits
In virtual circuit network each packet contains _________
1. full source and destination address
2. a short VC number
3.only source address
4.only destination address
Physical or logical arrangement of network is _______
1.Topology
2.Routing
3.Networking
4.Control
Socket-style API for windows is called ________
1.wsock
2.winsock
3.wins
4.sockwi
The data link layer takes the packets from _________ and encapsulates them into frames for transmission.
1.network layer
2.physical layer
3. transport layer
4.application layer
The network layer is concerned with __________ of data.
1.bits
2. frames
3.packets
4.bytes
The network layer protocol for internet is ______
1.ethernet
2.internet protocol
3.hypertext transfer protocol
4.file transfer protocol
The physical layer is concerned with ________
1.bit-by-bit delivery
2.process to process delivery
3.application to application delivery
4. port to port delivery
The physical layer provides __________
1.mechanical specifications of electrical connectors and cables
2.electrical specification of transmission line signal level
3. specification for IR over optical fiber
4.all of the mentioned
The physical layer translates logical communication requests from the ______ into hardware specific operations.
1.data link layer
2.network layer
3.trasnport layer
4.application layer
The portion of physical layer that interfaces with the media access control sublayer is called ________
1.physical signalling sublayer
2. physical data sublayer
3.physical address sublayer
4.physical transport sublayer
The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ______
1.piggybacking
2.cyclic redundancy check
3.fletcher’s checksum
4.parity check
Transmission data rate is decided by _______
1.network layer
2.physical layer
3. data link layer
4.transport layer
Transport layer protocols deals with ________
1.application to application communication
2. process to process communication
3.node to node communication
4.man to man communication
User datagram protocol is called connectionless because ________
1.all UDP packets are treated independently by transport layer
2. it sends data as a stream of related packets
3.it is received in the same order as sent order
4.it sends data very quickly
When 2 or more bits in a data unit has been changed during the transmission, the error is called _______
1. random error
2. burst error
3.inverted error
4.double error
Which layer provides the services to user?
1. application layer
2. session layer
3.presentation layer
4.physical layer
Which network topology requires a central controller or hub?
1.Star
2. Mesh
3. Ring
4.Bus
Which of the following are transport layer protocols used in networking?
1. TCP and FTP
2.UDP and HTTP
3. TCP and UDP
4.HTTP and FTP
Which of the following is a data link protocol?
1.ethernet
2.point to point protocol
3.hdlc
4.all of the mentioned
Which of the following is a transport layer protocol?
1. stream control transmission protocol
2.internet control message protocol
3. neighbor discovery protocol
4. dynamic host configuration protocol
Which of the following is not correct in relation to multi-destination routing?
1. is same as broadcast routing
2.contains the list of all destinations
3. data is not sent by packets
4. there are multiple receivers
Which of the following is the multiple access protocol for channel access control?
1.CSMA/CD
2. CSMA/CA
3.Both CSMA/CD & CSMA/CA
4. HDLC
Which of the following routing algorithms can be used for network layer design?
1.shortest path algorithm
2.distance vector routing
3.link state routing
4.all of the mentioned
Which of the following tasks is not done by data link layer?
1. framing
2.error control
3. flow control
4.channel coding
Which one of the following algorithm is not used for congestion control?
1. traffic aware routing
2. admission control
3.load shedding
4.routing information protocol
Which one of the following is not a function of network layer?
1. routing
2.inter-networking
3. congestion control
4.error control
Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
1.logical link control sublayer
2.media access control sublayer
3.network interface control sublayer
4.error control sublayer
Which transmission media provides the highest transmission speed in a network?
1.coaxial cable
2.twisted pair cable
3.optical fiber
4.electrical cable
Wireless transmission of signals can be done via _____
1.radio waves
2.microwaves
3.infrared
4.all of the mentioned
_____ is the multiplexing technique that shifts each signal to a different carrier frequency.
1. FDM
2. TDM
3. Both FDM & TDM
4.PDM
______ topology requires a multipoint connection.
1.Star
2.Mesh
3.Ring
4.Bus