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Commit fd2128a7 authored by KARETI VINEETH SAI's avatar KARETI VINEETH SAI
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vineeth/Feb11.csv 0 → 100644
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Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
Which of the following is true of CSMA protocols? Select all that apply.,MULTIPLE_CHOICE,[ [ 1, 3 ] ],1,,In 1-persistent CSMA-if channle is idle-you backoff for some time,Ethernet employs 1-persistent protocol,1-persistent protocol is worse than slotted aloha,In non-persistent-if channel busy- you wait a random amount of time and try again,,
Which of the following is true of CSMA protocols? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 1 ] ],1,,Non-persistent protocols suffers from longer delays,In p-persistent if channel is idle, you transmit with prob p,non-persistent assumes a slotted system,Wi-Fi uses a non-persistent CSMA,,
Which among the following performs best at high loads?,SINGLE_CORRECT_ANSWER,[ 3 ],1,,slotted aloha,1-p,0.5-p,non-p,,
Which of the following is true of CSMA/CD? Select all that apply.,MULTIPLE_CHOICE,[ [ 2 ] ],1,,Worst case delay for detecting collisions is 2RTT,As propagation approaches 0- efficiency approaches 0,Minimum frame size in ethernet is 64 bytes,Exponential backoff ensures fairness among nodes,,
which if the following is true of WiFi technology? Select all that apply.,MULTIPLE_CHOICE,[ [ 2 ] ],1,,In infrastructure mode-stations communicate with each other directly,DCF is polling based,Beacons carry SSID information,Passive scanning employs probe request and response,,
which if the following is true of WiFi technology? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 3 ] ],1,,Active scanning results in faster association than passive scanning,A client can authenticate with only one AP,Beacon frames are carried in control frames,Bits in frame control field indicate the type of frame,,
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Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
Which of the following is true of CSMA protocols? Select all that apply.,MULTIPLE_CHOICE,[ [ 2 ] ],1,,If a node has a frame to send, it just sends,1-persistent protocol is worse than pure aloha,802.15.4 (zigbee) uses non-persistent CSMA,In p-persistent-if channel is idle-you wait a random amount of time and try again,,
Which of the following is true of CSMA protocols? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 1 ] ],1,,In non-persistent, if channel busy, you wait a random amount of time and try again,In p-persistent, if channel is busy, you wait till idle,non-persistent assumes a slotted system,Ethernet uses non-persistent CSMA,,
Which of the following is true of CSMA/CD? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 2 ] ],,CD helps reduce wastage of resources,Propagation delay has no effect on efficiency,Worst case delay for detecting collisions is 1RTT,Minimum frame size in ethernet is 16 bytes,,
Which of the following is true of CSMA/CD? Select all that apply.,MULTIPLE_CHOICE,[ [ 0 ] ],1,,Exponential backoff ensures adaptation to current load,Bit time is 512 so as to ensure fairness among the nodes,Longer the propagation delay, lower chances of collision,Efficiency is a function of only transmisison time,,
which if the following is true of WiFi technology? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 1 ] ],1,,PCF is polling based,In independent mode, stations communicate with each other directly,Active scanning relies on beacons,Data frames carry SSID information,,
which if the following is true of WiFi technology? Select all that apply.,MULTIPLE_CHOICE,[ [ 0, 3 ] ],1,,A client can associate with only one AP,Data transfer can begin right after authentication,ACK is a management frame,The purpose of scanning is to select the "best" AP,,
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Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1. Which of the following is true of WiFi MAC? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Based on CSMA/CD
1) The protocol guarantees no collision
2) Backoff counter decremented even when channel busy
3) CW window is doubled after every collision
Answer: [ [ 3 ] ]
2. SIFA should be ______ DIFS
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) <=
1) <
2) >
3) >=
Answer: [ 1 ]
3. Which of the following is true? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) SIFS < DIFS
1) PIFS > DIFS
2) Slot time < 2 * propagation-delay
3) Slot time > propagation-delay
Answer: [ [ 0, 3 ] ]
4. Which among the following is true of RTS/CTS? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) NAV duration indicates channel is idle for this time
1) Gap between RTS and CTS is DIFS
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2) Gap between CTS and Data is SIFS
3) RTS/CTS should always be used for better efficiency
Answer: [ [ 2 ] ]
5. Which among the following is true of switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Provides a bus topology
1) In circuit switching, frames carry information on route to take
2) Circuit switching wastes resources
3) Packet switching does not buffer packets
Answer: [ [ 2 ] ]
6. Which among the following is true of packet switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) In datagram switching, packets carry destination address
1) In source routing, a small tag is carried in the packets
2) Packets can get delivered out of order in datagram delivery
3) Current Internet employs source routing predominently
Answer: [ [ 2, 0 ] ]
7. Which among the following is true of packet switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Datagram switching provides guaranteed packet delivery
1) In Virtual circuit switching, a connection needs to be setup before sending data
2) in Source routing , headers are of variable length
3) VCI field is much smaller than a destination address
Answer: [ [ 3, 2, 1 ] ]
8. Which among the following is true of Ethernet switching? Select all that apply
Marks: 1
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Type: MULTIPLE_CHOICE
Options:
0) Learning bridges learn based on destination address
1) Learning bridges purge forwarding table entries after some time
2) Learning process is an optimization
3) Considerable configuration is needed to set up learning bridges
Answer: [ [ 1, 2 ] ]
9. Which of the following is true of spanning tree protocol? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) At the beginning, each node thinks itself as root
1) The root bridge is randomly chosen
2) A port that is not a root or designated port can forward frames
3) The configuration message contains only the bridge's id and its distance to root
Answer: [ [ 0 ] ]
10.
In STP, at a bridge, a new configuration is better than stored, when? Select all that
apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) The bridge identifies a smaller root id
1)
Same root id, but longer distance to the root
2) Same root id and distance, but smaller sending root id
3)
The stored is always better, ignore new
Answer: [ [ 0, 2 ] ]
Feb21
Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1. Which of the following is true of WiFi MAC? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) based on 1-persistent protocol
1) Acks help detect collisions
2) CW window helps avoid collisions
3) CW window is cut in half after every collision
Answer: [ [ 1, 2 ] ]
2. Which of the following is true? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) SIFS < DIFS
1) PIFS > DIFS
2) Slot time < 2 * propagation-delay
3) Slot time > 2 * propagation-delay
Answer: [ [ 0, 3 ] ]
3. Which among the following is true of RTS/CTS? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0)
1)
2)
3)
They guarantee no collision
NAV duration indicates channel is busy for this time
Gap between RTS and CTS is slot time
Gap between CTS and Data is DIFS
Answer: [ [ 1 ] ]
4. Which among the following is true of switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
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Options:
0) Main function is media access control
1) In packet switching, frames carry information on entire route to take
2) Circuit switching works well for CBR traffic
3) Packet switching is highly fault tolerant
Answer: [ [ 3, 2 ] ]
5. Which among the following is true of packet switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Datagram switching suffers from call setup delay
1) Virtual circuit switching permits reserving resources along the path
2) VCI tags need to be unique globally
3) Source routing carries only the destination address
Answer: [ [ 1 ] ]
6. The forwarding cost is the lowest among?
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) Datagram switching
1) Pure circuit switching
2) Virtual circuit switching
3) Source routing
Answer: [ 1 ]
7. Which among the following is true of Ethernet switching? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Learning bridges learn based on source address
1) If a bridge receives a packet with destination D and there is no entry for D, they drop the frame
2) If learning is disabled, switching will not work correctly
3) Each time a host connected to the bridge goes down, the bridge needs to be reset
Answer: [ [ 0 ] ]
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8. Which of the following is true of spanning tree protocol? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) In STP, each bridge computes the longest path to the root
1) The root bridge is the one with the shorted id
2) STP prevents collisions
3) All bridges have to continuosuly generate configuration messages
Answer: [ [ 1 ] ]
9.
In STP, a new configuration is better at a bridge than stored, when? Select all that
apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) The bridge identifies a smaller root id
1) Same root id, but longer distance to the root
2) Same root id and distance, but smaller sending bridge id
3) The stored is always better, ignore new
Answer: [ [ 0, 2 ] ]
10.
Which among the following is a true of bridges (link-layer switches)? Select all that
apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Flat addressin makes them scale better
1) Sometimes forwarding can result in flooding
2) STP provides load balancing
3) STP provides the shotest path between any two nodes
Answer: [ [ 1 ] ]
Mar7
Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1.
Which among the following is a problem that VLANs are trying to address? Select all
that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Prevent loops in network topology
1) Lack of traffic isolation in LANs
2) Security concerns related to snooping
3) Lack of reliability over links
Answer: [ [ 1, 2 ] ]
2.
Which of the following is true of current Internet datagram delivery? Select all that
apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Does not require connection setup
1) Guarantees minimum bandwidth
2) Suppresses duplicates
3) Delivers packets in order
Answer: [ [ 0 ] ]
3. Which among the following is true of routers? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) In 1st generation routers, the bus is the bottleneck
1) In the 2nd generation routers, the CPU is the bottleneck
2) 3rd generation routers introduced a switched blackplane
3) Look up speed should be less than line speed
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Answer: [ [ 2 ] ]
4.
In 2st generation routers, packet goes over the bus how many times? Format X (e.g.
5)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "1" ]
5. How many classes of IP addresses are there? Format X (e.g. 7)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "5" ]
6.
When forwarding at a Router; If (NetNum of Dest = NetNum of one of my interfaces)
then what should the router do?
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) Deliver packet directly to destination on that interface
1) Look up forwarding table and deliver packet to next-hop router
2) Deliver to default router
3) Drop the packet
Answer: [ 0 ]
7. Which among the following is true of IP packet format? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) header length specifies the header in 32 bit words
1) Total length specifies length of datagram in 32-bit words
2) Type of service field helps identify the higher layer protocols
3) TTL field helps drop packets stuck in a loop
Answer: [ [ 0, 3 ] ]
8. Which among the following is true of IP fragmentation? Select all that apply.
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Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) The reassembly of fragments is done at the next hop router
1) All fragments of a given datagram should have different identification ids
2) The first fragment has an offset value of 0
3) Fragmentation occurs because there is no space at the router buffer
Answer: [ [ 2 ] ]
9. A small organization (< 100 hosts) would likely get what type of public address?
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) Class A
1) Class B
2) Class C
3) Class D
4) Class E
Answer: [ 2 ]
10.
Which among the following is true of IP addressing and forwarding? Select all that
apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Private IP addresses belong only to Class A
1) Class A addresses start with 01
2) Hosts belonging to same physical network should have same network part in the IP address
3) A router in the Internet will forward packets with destination address belonging to 10.*.*.*
Answer: [ [ 2 ] ]
Mar11
Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1.
If an organization has only 64 hosts and is assigned a class C address, what is the
address efficiency achieved by it? Express in percentage. Format X (e.g. 30)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "25" ]
2. How many class B prefixes are there?
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) 128
1) 256
2) 16384
3) 65536
Answer: [ 2 ]
3. What class addresses are in high demand? Format X (e.g. D)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "B,b" ]
4. Which of the following is TRUE about DHCP? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) It employs TCP
1) Protocol permits use of multiple DHCP servers
2) It permits reuse of IP addresses
3) DHCP server's IP address needs to be manually configured at the host
Answer: [ [ 1, 2 ] ]
5.
safev2.cse.iitb.ac.in:82/quiz/297/print
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Address block is represented as A/X, where A is the address prefix and X is the
prefix length. What is the minimum value of X? Format X (e.g. 8)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "2" ]
6. The bit wise end of the IP address and the subnet mask of a host gives
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) Broadcast address for the subnet of the host
1) Network address portion of the host
2) Multicast address of the host
3) Host address portion of the host
Answer: [ 1 ]
7. Which of the following is true of supernetting? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) One class address shared among many physical networks
1) Multiple class addresses shared among one physical network
2) All hosts on a given physical network have the same subnet number and mask
3) IP prefix can be of variable length
Answer: [ [ 1, 3 ] ]
8. Which of the following is true of obtaining addresses?
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) An organization gets an address block from an ISP
1) A host gets an IP address by applying to ICANN organization
2) IP addresses are location dependent
3) Manual configuration guarantees IP addresses are not duplicated
Answer: [ [ 0, 2 ] ]
9. Which of the following is true of ICMP? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
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0) ICMP operates at the link layer
1) ICMP data field carries the entire (IP) datagram of the packet that caused error
2) ICMP is used to convey IP to MAC address mapping
3) ICMP helps detect if a port is unreachable
Answer: [ [ 3 ] ]
10. Which of the following is true of traceroute? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Traceroute operates at the application layer
1) Relies on ICMP's "fragmentation required field" type/code
2) In traceroute sent messages, destination port is set to an unlikely number
3) Relies on "destination network unreachable" type/code
Answer: [ [ 0, 2 ] ]
Mar14
Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1.
If an organization has only 4096 hosts and is assigned a class B address, what is the
address efficiency achieved by it? Express in percentage. Format X (e.g. 30)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "6,6.25" ]
2. How many class A prefixes are there?
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) 128
1) 256
2) 16384
3) 65536
Answer: [ 0 ]
3.
An organization has a physical network with 4000 hosts, what type of addresses
would you assign to maximize efficiency? Format X (e.g. A)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "B,b" ]
4. Which of the following is TRUE about DHCP. Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Addresses handed out by server can be used until server asks for it back via a special message
1) DHCP operates at the network layer
2) DHCP Request messages sent by client are unicast
3) DHCP server passes default router information
Answer: [ [ 3 ] ]
5.
safev2.cse.iitb.ac.in:82/quiz/298/print
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Address block is represented as A/X, where A is the address prefix and X is the
prefix length. What is the maximum value of X? Format X (e.g. 8)
Marks: 1
Type: FILL_IN_THE_BLANKS_TYPE
Answer: [ "32" ]
6. Which of the following is true of subnetting? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) In subnetting, one class address is shared among many physical networks
1) In subnetting, multiple class addresses is shared among one physical network
2) All hosts on a given physical network have the same subnet number and mask
3) All routers outside organization have multiple entries against the organization for a given IP prefix.
Answer: [ [ 0, 2 ] ]
7.
DHCP offer (when the client is asking for an IP address for the very first time i.e. not
renewing lease) is
Marks: 1
Type: SINGLE_CORRECT_ANSWER
Options:
0) Unicast
1) Multicast
2) Broadcast
Answer: [ 2 ]
8. Which of the following is true of ARP? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Entries in the ARP cache are maintained indefinitely
1) Gratuitous ARP are only sent as ARP requests
2) ARP replies are broadcast
3) Gratuitous ARP help detect duplicate IP addresses
Answer: [ [ 3 ] ]
9. Which of the following is true of traceroute? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
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0) Traceroute operates at the application layer
1) Relies on ICMP's "fragmentation required field" type/code
2) In traceroute sent messages, destination port is set to an unlikely number
3) Relies on "destination network unreachable" type/code
Answer: [ [ 0, 2 ] ]
10.
Which among the following ICMP message type/code does traceroute depend on
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) TTL expired
1) Port unreachable
2) Host unknown
3) Bad IP header
Answer: [ [ 0, 1 ] ]
Mar18
Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
1. Which among the following is true of NAT? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Provides IPv4 address savings
1) Provides some security against attackers
2) Works over encrypted headers
3) Operates below Network Layer
Answer: [ [ 0, 1 ] ]
2.
Which among the following information is noted in the NAT table on receiving a
packet from a host within the organization? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Src IP address in the received packet
1) Src port in the received packet
2) Dst IP address in the received packet
3) Dst port address in the received packet
4) A unique port assigned by NAT to the connection as source port
Answer: [ [ 0, 1, 4 ] ]
3. Which of the following is TRUE about IPv6. Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) IPv6 supports fragmentation
1) IPv6 does not provide checksum functionality
2) Helps fast processing at routers
3) Does not provide any security
Answer: [ [ 1, 2 ] ]
4.
safev2.cse.iitb.ac.in:82/quiz/344/print
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Which amont the following is true of migration from IPv4 to IPv6? Select all that
apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) IPV4 nodes need to support dual stack
1) An IPv6 packets is carried as a payload of Ipv4 packet in some instances
2) Flag days are used to bring down Internet and facilitate migration.
3) IPv6 nodes need to support dual stack
Answer: [ [ 1, 3 ] ]
5. In routing protocol implementations, select all the desirable features.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Dynamic
1) Centralized
2) Robust
3) Complex
Answer: [ [ 0, 2 ] ]
6. Which among the following is a stable cost mertric? Select all that apply
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) hop count
1) 1/link_bandwidth
2) Queue length
3) Queuing delay
Answer: [ [ 0, 1 ] ]
7.
In Distance Vector protocol, what information is exchanged with a neighbor? Select
all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
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0) Destination ID
1) Cost to destination
2) Next-hop to reach destination
3) Path taken to reach destination
Answer: [ [ 0, 1 ] ]
8.
Which among the following is true of Distance Vector algorithm? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Initial state, a node knows only distance to its immediate neighbors.
1) Final state, a node knows entire gobal knowledge
2) DV uses bellman ford equation to update the routing table
3) When there is no change in topology, DV can still not converge
4) In DV, periodic updates are sent only when the routing table changes
Answer: [ [ 0, 2 ] ]
9.
Among the solutions to handle "count-to-infinity" problem of DV, which of the
following is true? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) Split horizon with poison reverse eliminates count to infinity in all cases
1) Making infinity small helps puts a cap on convergence time
2) In Split horizon, next hop information is shared with neighbors
3) Hold down timer slows convergence
Answer: [ [ 1, 3 ] ]
10. Which among the following is true of RIP? Select all that apply.
Marks: 1
Type: MULTIPLE_CHOICE
Options:
0) RIP uses TCP
1) The cost of a link is 1/link_bandwidth
2) RIP can run only over small networks
3) RIP employs only periodic updates and not triggered updates
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Answer: [ [ 2 ] ]
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Question,Type,Answer,Marks,Category,Opt1,Opt2,Opt3,Opt4,Opt5,Remarks
Hub provides what topolgy?,SINGLE_CORRECT_ANSWER,[ 0 ],1,easy,Star,Ring,Bus,Mesh,,
Unicast means,SINGLE_CORRECT_ANSWER,[ 0 ],1,,packet intended for a specific node,packet intended for all nodes,packet intended for a subset of nodes,packet intended for no node,,
In a random access protocol involving N users using a channel with rate R, if only
one user is active, what max throughput can he achieve?,SINGLE_CORRECT_ANSWER,[ 0 ],1,,R,R/N,N/R,N*R,,
In the speed dating analogy-CDMA translates to?,SINGLE_CORRECT_ANSWER,[ 2 ],1,,Allocate couples different time slots,Allocate couples different spaces,Ask couples to talk in different languages,Ask couples to raise their hands,,
Which of the following are true of channel partitioning protocols? Select all that apply/,MULTIPLE_CHOICE,[ [ 3 ] ],1,,In TDM- sender can get R rate (= channel rate) when there are N users,An advantage of FDM is there is no sender-receiver channel coordination
,In CDMA-sender can get R rate (= channel rate) when there are N users,There is no channel access delay in FDM,,
Which of the following is true of taking turns protocols? Select all that apply.,MULTIPLE_CHOICE,[ [ 3, 2 ] ],1,,In polling protocols, a single user will get rate equal to R (=channel rate),Token passing protocols do not suffer from single point of failure,Polling protocols suffer from single point of failure,Taking turn protocols perform better than random access protocols at high loads,,
What is the efficieny of slotted Aloha in percentage? Format X (e.g. 30),FLOAT_TYPE,[ { "max_val": "37", "min_val": "36" } ],1,,,,,,,
Which of the following is true of Aloha based protocols? Select all that apply,MULTIPLE_CHOICE,[ [ 0, 2 ] ],1,,There is channel access delay in slotted aloha,On collision, sender immediately transmits,As the traffic load increases, the throughput rises and falls,The vulnerable period in slotted aloha is twice pure aloha,,
Which among the following is True about a HUB? Select all that apply,MULTIPLE_CHOICE,[ [ 0, 3 ] ],1,,Hub is a physical layer device,Hub buffers frames,Hub implements a MAC protocol,Cannot connect 10BaseT with 100BaseT via hub,,
Which of the following is true of Ethernet? Select all that apply,MULTIPLE_CHOICE,[ [ 1, 2 ] ],1,,Ethernet is connection -oriented protocol,Employs manchester enoding,Half duplex mode requires a MAC,Ethernet employs 2D parity for Error detection,,
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