A certain population of ALOHA users
manages to generate 70 request/sec. If the
time is slotted in units of 50 msec, then
channel load would be
a. 4.25
b. 3.5
c. 350
d. 450

1 Answer

Answer :

b. 3.5

Related questions

Description : In__________, eachstation is forced to send only at the beginning of the time slot. A) pure ALOHA B) slotted ALOHA C) both (a) and (b) D) neither (a) nor (b)

Last Answer : slotted ALOHA

Description : With Slotted Aloha, a …………. sends out small clock tick packets to the outlying stations. A. distributed clock B. synchronized clock C. centralized clock D. Digital clock

Last Answer : C. centralized clock

Description : A disk drive has 100 cylinders, numbered 0 to 99. Disk requests come to the disk driver for cyclinders 12, 26, 24, 4, 42, 8 and 50 in that order. The driver is currently serving a request at cyclinder 24. A seek takes ... (SSTF) algorithm? (A) 0.984 sec (B) 0.396 sec (C) 0.738 sec (D) 0.42 sec

Last Answer : C

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 : For pure ALOHA, the maximum channel utilization is a. 100% b. 50% c. 36% d. 18%

Last Answer : d. 18%

Description : The compound interest accrued on an amount of Rs. 25,500 at the end of three years is Rs. 8,440.5.What would be the simple interest accrued on the same amount at the same rate in the same period? a) Rs. 5,450/- b) Rs. 8,750/- c) Rs. 4,350/- d) Rs. 3,650/- e) Rs. 7,650/- 

Last Answer : A = P + Interest = 25500 + 8440.5 = 33940.5 A = P + 1 + (R/100)^3 33940.5 = 25500 a + R/100)^3 a + R/100)^3 = 33940.5 / 25500 a + R/100)^3 = 1.331 a + R/100)^3 = ... R = 10% Simple Interest = Principle Rate Time / 100 = 25500 10 3/100 = 7650 Answer: e)

Description : In a time multiplexed space switching system, one speech sample appears every (A) 125 micro sec (B) 20 msec (C) 125 msec (D) 1 sec

Last Answer : (A) 125 micro sec

Description : The access time of ROM using bipolar transistors is about (A) 1 sec (B) 1 msec (C) 1 µsec (D) 1 nsec.

Last Answer : Ans: C The access time of ROM using bipolar transistors is about 1 µ sec.

Description : A pure ALOHA Network transmit 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) 0.586

Last Answer : (B) 0.184

Description : A 8-Mbps tokenring has atoken holding timer value of 10 msec. What is the longest frame (assumeheader bits are negligible) that canbe sent on this ring? A. 8000 B frame B. 80,000 B frame C. 8 x 105 bit frame D. 10,000 B frame

Last Answer : 10,000 B frame

Description : Inslotted ALOHA, the vulnerable time is ______ the frame transmissiontime. A) the sameas B) two times C) three times D) none of the above

Last Answer : the sameas

Description : In pure ALOHA, the vulnerable time is ______the frame transmissiontime. A) the sameas B) two times C) three times D) none of the above

Last Answer : two times

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 : The maximum throughput for pure ALOHA is________per cent. A) 12.2 B) 18.4 C) 36.8 D) none of the above

Last Answer : 18.4

Description : The Aloha protocol is an OSI _______ protocol for LAN networks with broadcast topology A. layer 1 B. layer 4 C. layer 2 D. layer 3

Last Answer : C. layer 2

Description : If the fare of Rajdhani Exp is Rs. 350 and that of Sapt Kranti Exp is Rs. 450 for all classes of passenger then what is the total income of both the trains during 2011 to 2013? 1) Rs. 95 crore 2) Rs. 98 crore 3) Rs. 90 crore 4) Rs. 89 crore 5) Rs. 92.5 crore

Last Answer : 5) Rs. 92.5 crore

Description : Suppose there are n stations in a slotted LAN. Each station attempts to transmit with a probability P in each time slot. The probability that only one station transmits in a given slot is _______. a. nP(1 – P)n – 1 b. nP c. P(1 – P)n – 1 d. n P (1 – P)n – 1

Last Answer : a. nP(1 – P)n – 1

Description : Suppose transmission rate of a channel is 32 kbps. If there are ‘8’ routes from source to destination and each packet p contains 8000 bits. Total end to end delay in sending packet P is _____. a. 2 sec b. 3 sec c. 4 sec d. 1 sec

Last Answer : a. 2 sec

Description : Which of the following protocols is an application layer protocol that establishes, manages and terminates multimedia sessions ? a. Session Maintenance Protocol b. Real - time Streaming Protocol c. Real - time Transport Control Protocol d. Session Initiation Protocol

Last Answer : d. Session Initiation Protocol

Description : A relational database management (RDBM) package manages datain morethan one file at once. How does itorganizethese file? As A. tables B. relations C. tuple D. both (a)and (b) E. None of the above

Last Answer : both (a)and (b)

Description : Which type of channel it is where the number of users are stable and the traffic is not bursts? A. static channel B. dynamic channel C. free channel D. both a and c

Last Answer : A. static channel

Description : A car weighing 1000kg deflects its springs by 0.4cm under its load. Determine the natural frequency of 2 car in vertical direction take g=10N/m a) 25 rad/sec b)50 rad/sec c) 2 rad/sec d)none

Last Answer : b)50 rad/sec

Description : Carrier is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above

Last Answer : a continuous frequency capableof being modulated or impressed witha second signa

Description : Contention is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above

Last Answer : the condition whentwo or more stations attempt to use the same channel at the same time

Description : As per the Constitution of India, what is the limit prescribed for the number of members in the Legislative Assembly of a State? (1) 350 members (2) 400 members (3) 450 members (4) 500 members

Last Answer : (4) 500 members Explanation: The number of members ranges between 60 and 500.

Description : Most of the plastics are safe to be used upto a maximum temperature of __________ °C. (A) 100 (B) 150 (C) 350 (D) 450

Last Answer : (B) 150

Description : What is the average weight of Human Heart? A. 300 gram (Answer) B. 350 gram C. 400 gram D. 450 gram

Last Answer : A. 300 gram (Answer)

Description : Match List-I (crops) with List-II (water requirement) and select your answer from the code given below- List-I (a) Jowar (b) Soybean (c) Cotton (d) Groundnut List-II 1. 140 mm - 300 mm 2. 350 mm - 450 mm 3. 200 mm - 300 mm 4. 300 mm - ... (b) (c) (d) (A) 3 1 2 4 (B) 4 2 3 1 (C) 1 4 2 3 (D) 3 1 4 2

Last Answer : (C) 1 4 2 3

Description : Maximum root zone depth for Maize (a) 200-300 mm (b) 400-600 mm (c) 500-600 mm (d) 350- 450 mm

Last Answer : (b) 400-600 mm

Description : What is the electric field intensity at a distance of 20cm from a charge 2 X 10 -6 C in vacuum? a) 250,000 b) 350,000 c) 450,000 d) 550,000

Last Answer : c) 450,000

Description : The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. (A) 100 to 150 (B) 350 to 450 (C) 550 to 650 (D) 700 to 850

Last Answer : (B) 350 to 450

Description : What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600

Last Answer : (B) 200-300

Description : Hot extrusion of aluminium is done in the temperature range of __________ °C. (A) 550-600 (B) 450-500 (C) 350-400 (D) 250-300

Last Answer : (C) 350-400

Description : While designing a stair, the product of rise and going is approximately kept equal to (A) 350 (B) 420 (C) 450 (D) 500

Last Answer : Answer: Option B

Description : Sum of tread and rise must lie between (A) 300 to 350 mm (B) 400 to 450 mm (C) 500 to 550 mm (D) 600 to 650 mm

Last Answer : Answer: Option B

Description : According to IS: 456-2000 Maximum spacing of shear reinforcement in no case shall not exceed [ A ] 250 mm [ B ] 300 mm [ C ] 350 mm [ D ] 450 mm

Last Answer : [ B ] 300 mm

Description : A channel of distribution is a group of individuals and organizations that 1. directs the flow of products from producers to customers 2. links producers to other marketing intermediaries 3. ... to products and resells them 4. manages transportation and warehousing functions 5. none of these

Last Answer : directs the flow of products from producers to customers

Description : A channel of distribution is a group of individuals and organisations that A)directs the flow of products from producers to customers. B)links producers to other marketing intermediaries. C)takes title to products and resells them. D)manages transportation and warehousing functions.

Last Answer : A)directs the flow of products from producers to customers.

Description : A packet filtering firewall can a. deny certain users from accessing a service b. block worms and viruses from entering the network c. disallow some files from being accessed through FTP d. block some hosts from accessing the network

Last Answer : d. block some hosts from accessing the network

Description : To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is A. 0.50 m/sec B. 0.60 m/sec C. 0.70 m/sec D. 0.75 m/sec

Last Answer : ANS: D

Description : Error rate is A. an error-detectingcode based ona summation operation performed onthebits to be checked. B. a checkbit appended to anarrayof binary digits to make thesum of all thebinary digits. C. a ... ratioof the number ofdata units in error to the total number of dataunits E. None of the above

Last Answer : the ratioof the number ofdata units in error to the total number of dataunits

Description : Calculate coefficient of viscous damper, if the system is critically damped. Consider the following data: 1. Mass of spring mass damper system = 350 kg 2. Static deflection = 2 x 10 -3 m 3. Natural frequency of the system = 60 rad/sec ... /m B. 80 x 10 3 N-s/m C. 42 x 10 3 N-s/m D. None of the above

Last Answer : C. 42 x 10 3 N-s/m

Description : Calculate coefficient of viscous damper, if the system is critically damped. Consider the following data: 1. Mass of spring mass damper system = 350 kg 2. Static deflection = 2 x 10 -3 m 3. Natural frequency of the system = 60 rad/sec ... /m b. 80 x 10 3 N-s/m c. 42 x 10 3 N-s/m d. None of the above

Last Answer : c. 42 x 10 3 N-s/m

Description : In March 2015 the Unted Nations decided to increase Pakistan’s Continental Shelf from 200 to 350 nautical miles. When did Pakistan submit its request for increasing limits of its Continental Shelf, to the United Nations? A. April 2009 B. October 2010 C. January 2011 D. January 2012

Last Answer : ANSWER: A

Description : In March 2015 the Unted Nations decided to increase Pakistan’s Continental Shelf from 200 to 350 nautical miles. When did Pakistan submit its request for increasing limits of its Continental Shelf, to the United Nations? A. April 2009 B. October 2010 C. January 2011 D. January 2012

Last Answer : ANSWER: A

Description : What is the propagation delay when a signal is transmitter by an earth station to a geosynchronous satellite about 38,500 km above earth’s equator and then received by the same earth station? A. 256 msec B. 128 msec C. 300 msec D. 400 msec

Last Answer : A. 256 msec

Description : Which protocols adopted the standards of HDLC (High Level Link Control) protocol? a. X.25 protocol as LAPB (Link Access Procedure Balanced, V.42 protocol as LAPM (Link Access Procedure for ... Services Digital Network) protocol as LAPD (Link Access Procedure on D channel) d. All the above

Last Answer : d. All the above

Description : Is 70 Times 5 equal to 350?

Last Answer : Yes, 70 times 5 is equal to 350.

Description : Is 70 Times 5 equal to 350?

Last Answer : Yes, 70 times 5 is equal to 350.