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

1 Answer

Answer :

can; cannot

Related questions

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 signal is not standard RS-232-C signal? a. VDR b. RTS c. CTS d. DSR

Last Answer : VDR

Description : In ________,a station monitors the medium after it sends a frame to see if the transmission was successful. If so, the station is finished. If, however, there is a collision, the frameis sentagain. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b)

Last Answer : CSMA/CD

Description : In IEEE 802.11, the access method used in the DCF sublayer is _________. A) ALOHA B) CSMA/CA C) CSMA/CD D) none of the above

Last Answer : CSMA/CA

Description : In_______, collisions are avoidedthrough theuse of three strategies: the interframe space, the contention window,and acknowledgments. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b)

Last Answer : CSMA/CA

Description : Toavoid collisions on wireless networks, ________was invented. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b)

Last Answer : CSMA/CA

Description : __________ augments the CSMA algorithm todetect collision. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b

Last Answer : CSMA/CD

Description : Which of the following is the multiple access protocol for channel access control? a. CSMA/CD b. CSMA/CA c. Both CSMA/CD & CSMA/CA d. HDLC

Last Answer : c. Both CSMA/CD & CSMA/CA

Description : In _______, collisions are avoided through the use of three strategies: the interframe space, the contention window, and acknowledgments. A. CSMA/CA B. CSMA/CD C. either (a) or (b) D. both (a) and (b)

Last Answer : A. CSMA/CA

Description : Which of the following is the multiple access protocol for channel access control? A. CSMA/CD B. CSMA/CA C. Both CSMA/CD & CSMA/CA D. HDLC

Last Answer : C. Both CSMA/CD & CSMA/CA

Description : Explain CSMA/CD and CSMA/CA.

Last Answer : CSMA- resolving the media contention. Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Listen for Data Transmission on Cable (Carrier Sense) When Medium is free a) Transmit ... time, and transmit again. Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) Nov/Dec

Description : What is CSMA/CA?

Last Answer : ∙ CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is a protocol for carrier transmission in 802.11 networks. ∙ CSMA/CA acts to prevent collisions before they happen. ∙ In CSMA/CA, as soon as a node receives a packet that is to be sent, it checks to be sure the channel is clear.

Description : ________ requires that each station first listento the medium before sending. A) MA B) CSMA C) FDMA D) CDMA

Last Answer : CSMA

Description : In ______, the chanceof collisioncan be reduced if a station senses the medium beforetrying touse it. A) MA B) CSMA C) FDMA D) CDMA

Last Answer : CSMA

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 : Marketing effo ing efforts, wh rts, which incl ich include publi ude public health ca c health campaigns to reduc ns to reduce smoki e smoking, alcoh ng, alcoholism, drug abuse, and overeating are called _____. a. specialty product b. social marketing social marketing c. shopping product

Last Answer : b. social marketing social marketing

Description : The vulnerable timefor CSMA is the ________propagationtime. A) the sameas B) two times C) three times D) none of the above

Last Answer : the sameas

Description : The _____sublayer is responsible for the operation of the CSMA/CD access method and framing. A) LLC B) MII C) MAC D) none of the above

Last Answer : MAC

Description : The IEEE 802.3 Standard defines _________ CSMA/CD as the access method for first-generation 10-Mbps Ethernet. A) 1-persistent B) p-persistent C) non-persistent D) none of the above

Last Answer : 1-persistent

Description : In Ethernet CSMA/CD, the special bit sequence transmitted by media access management to handle collision is called a. Preamble b. Postamble c. Jam d. None of the above

Last Answer : c. Jam

Description : The minimum frame size required for a CSMA/CD based computer network running at 1 Gbps on a 200m cable with a link speed of 2 × 108m/s is a. 125 bytes b. 250 bytes c. 500 bytes d. None of these

Last Answer : b. 250 bytes

Description : Which of the following statements is TRUE about CSMA/CD a. IEEE 802.11 wireless LAN runs CSMA/CD protocol b. Ethernet is not based on CSMA/CD protocol c. CSMA/CD is not suitable for a high propagation delay network like satellite network d. There is no contention in a CSMA/CD network

Last Answer : CSMA/CD is not suitable for a high propagation delay

Description : Consider a CSMA/CD network that transmits data at a rate of 100 Mbps (108 bits per second) over a 1 km (kilometre) cable with no repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km/sec) in the cable? a. 8000 b. 10000 c. 16000 d. 20000

Last Answer : d. 20000

Description : What is CSMA/CD?

Last Answer : Carrier Sense Multiple Access with Collision Detection (CSMA/CD) When a station has a frame to transmit: 1) Listen for Data Transmission on Cable (Carrier Sense) 2) When Medium is Quiet (no ... for Collision. b) If collision is heard, stop transmitting, wait random time, and transmit again.

Description : Explain the terms topology and access methods used in LANs. Discuss the CSMA/CD and CSMA/CA protocols.

Last Answer : (i) LAN topologies: Network topology is a physical schematic which shows interconnection of the many users. There are four basic topologies as under:  (a) Direct Connection or one to all ... it is free, the station transmits, and waits for an acknowledgment signal that the packet was received

Description : LAN? a) CDMA b) CSMA/CA c) ALOHA d) CSMA/CD

Last Answer : b) CSMA/CA

Description : Which multiple access technique is used by IEEE 802.11 standard for wireless LAN? a. ALOHA b. CSMA/CA c. CDMA d. none of the mentioned

Last Answer : b. CSMA/CA

Description : Excerpt from Part One of which book: People today face this persistent question in new and pressing ways. Communities are exposed to the risks of uncertainty, and suffer the grave consequences of ... the ultimate solution to the problem of the proper instrument of government Fill up the blank

Last Answer : Green.

Description : The IEEE 802.11 wireless LANs use ________ types of frames. A) four B) five C) six D) none of the above

Last Answer : none of the above

Description : A ________bridge can forward and filter frames andautomatically buildits forwarding table. A) simple B) dual C) transparent D) none of the above

Last Answer : transparent

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

Last Answer : 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 : 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