Computer Engineering Questions and Answers May 16, 2020

In a university there are students studying in different programs. Each program run through different semester and each semester has different subjects. Each subject has a credits. For attending the classes student gets attendance. Subject is taught by a one or more than faculty. To create an application to maintain this data, i) Find the number

When a Wyse Thin Client is switch on, the power LED comes up normally with the POST screen displaying the DELL logo, but after that there is no display. What could be the possible reason Incompatible monitor Defective logic board Abnormal power source Defective cable or connector

Test the validity of the following argument Babies are illogical. Nobody is despised who can manage a crocodile. Illogical persons are despised. Therefore babies cannot manage crocodiles.

Which of the following relates to Velocity in 3 V characteristics of Big Data (a) Size of data to be processed. (b) (c) (d) Speed of data to be downloaded from a data warehouse. Computation time necessary to retrieve information from data. Rate of growth of data in Internet.

Which (a) (c) (d) of the following is NOT true about the size of data 1 Zeettabyte 102 bytes. 1 Quintillion 103 bytes. 1 Quintillion 108 bytes. The current size of the digital universe is in the order of Yottabytes.

Which of the following categories according to NOIR classification does not allow the calculation of median as a measure of central tendency? (a) Nominal. (b) Ordinal. (c) Interval scale. (d) Ratio scale.

Which of the following statements is true about Hadoops MapReduce (a) MapReduce is a processing technique and a program model for distributed computing based on Java. MapReduce is solution for efficient storage mechanism for Big Data. (b) (c) MapReduce is security protocol for remote authentication for data storage security. (d) MapReduce is a

Which of the following statements is NOT true about the data cube model (a) It helps efficient retrieval of highdimensional and high volume data. It is a model for storing structured data only. (b) (c) (d) It is a model for storing unstructured data only. It is a model for storing heterogeneous data.

Which of the following can be considered to remove outliers in data (a) Q1 quartile measure (b) Median measure (c) IQR (Inter Quartile Range) measure (d) Box plot.

Which of the following statement is true according to the Central Limit theorem (a) Populations mean can be inferred from a samples mean for any population. (b) Populations variance can be inferred from the samples variance for any population. (c) Populations mean can be inferred from a samples mean for any sample chosen at random. (d) Populations

Which of the following probability density functions is (are) applicable to discrete random variables (a) Gaussian distribution (b) Poisson distribution (c) Weibull distribution (d) Chisquare distribution

Which of the following is true about a Bernoulli process (a) Each trial has two or more outcomes. Outcome in trials are mutually exclusive (c) Each trial is independent to each other. (b) (d) A trial may be repeated for a number of times.

If f(x) is a probability density function of any continuous random variable, then which of the follow statements is(are) correct (a) f(x) dx (b) P(a x b) f(x) dx 1 (c) y f xf (x) dx there exist y E R (d) zf(x) f(x)dx there existl z E R

A distribution of data is shown in the figure given below. Frequency 2 0 1 2 3 4 5 6 7 8 Y Select the mean and median of the sample from the option given below (a) Mean(Y) 2.0, Median(Y) 2.5 (b) (c) Mean(Y) 2.5, Median(Y) 2.0 Mean(Y) 3.0, Median(Y) 1.5 Mean(Y) 3.5, Median(Y) 1.0 (d)

A probability mass function for a random variable P(Xx) f(x) is given below. 1 0.32 X f(x) 0 0.64 2 0.04,Select the variance of the data from the option given below (a) 0.64 (b) 0.32 (c) 0.20 (d) 0.04

A sample follows normal distribution with mean 0 and variance o 1. What is P(X2) (a) 0.1468 (b) 0.1568 (c) 0.1668 (d) 0.1768

Consider the messages received on 9 18, 11, 9, 5, 18, 4, 15, 13, 14 Find median and mode of the data. (a) (b) (c) 13, 13 13, 18 18, 15 (d) 15, 13 consecutive days are

A data distribution in discrete domain satisfies the Poisson distribution. The mean arrival rate is 16 over a fixed period of time, say t 1. Which of the following is true about the mean and standard deviation of the data (a) Mean 16, Standard deviation 16 (b) Mean 16, Standard deviation 4 (c) Mean 4, Standard deviation 16 (d) Mean 4,

. Which of the following is true bout the Five Number Summary (a) It includes smallest, largest, IQR, mean, and standard deviation. It includes smallest, largest, IQR, mean, and variance. (b) (c) It includes minimum, maximum, mean, median, and mode. (d) It includes smallest, largest, 25th Percentile, 50th percentile, and 75th Percentile.

Consider the following set of data 5, 10, 15, 5, 5, 10, 20, 15, 5, 10 Calculate the Coefficient of variation. Select the correct answer from the options given below. (a) 50. (b) 100. (c) 52.70. (d) 0.

Which of the following statement sounds reasonable (a) If the sample size increases sampling distribution must approach normal distribution. If the sample size decreases then the sample distribution must approach normal distribution. (b) (c) If the sample size increases then the sampling distribution much approach an exponential distribution. (d)

If u and o denote the mean and standard deviation of a population, then the standard normal distribution is better described as (select the correct option from the list of options given below) (a) f(x A, B) (d) f(x , o) BA .0 1 (b) f(x,0)e(x) 20 o) (c) f(z 0,1) 2 1 2 1 Z e 2 2 AxB Otherwise e 2zzln(x)1 0 x

In the following Table, Column A lists some sampling distributions, whereas Column B lists the name of sampling distributions. All symbols bear their usual meanings. Column A (A) X on (B) X Sn (C) S02 S0 (D) (n1)S 0 (W) (a) (A)(Z), (B)(X), (C)(Y), (D)(Z) (b) (A)(X), (B)(Z), (C)(W), (D)(W) (c) (A)(Y), (B)(W), (C)(X), (D)(Y) (A)(W), (B)(Y), (C)(Z),

You are given a set of 2D points in a Numpy array of points with shape (N, 2), where each row represents a point in the form (x, y). Your task is to fit a line to the points using the least squares method and determine the equation of the line in the form y mx b. Which NumPy function will you use to do this task If we consider our dataset in the

How do you generate rule from decision tree algorithm ?

Describe the issue faced by Decision tree based algorithm ?

Design K-Means algorithm & demonstrate with the help following example?

What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet? A.NAT B.Static C.Dynamic D.PAT

What are the two main types of access control lists (ACLs)? 1.Standard 2.IEEE 3.Extended 4.Specialized A.1 and 3 B.2 and 4 C.3 and 4 D.1 and 2

Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides? A.192.168.168.129-190 B.192.168.168.129-191 C.192.168.168.128-190 D.192.168.168.128-192

What does the passive command provide to dynamic routing protocols? A.Stops an interface from sending or receiving periodic dynamic updates. B.Stops an interface from sending periodic dynamic updates but not from receiving updates. C.Stops the router from receiving any dynamic updates. D.Stops the router from sending any dynamic updates.

Which router command allows you to view the entire contents of all access lists? A.show all access-lists B.show access-lists C.show ip interface D.show interface

If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link? A.RouterA(config)#bandwidth 64 B.RouterA(config-if)#bandwidth 64000 C.RouterA(config-if)#clock rate 64 D.RouterA(config-if)#clock rate 64000

Which of the following describe the DHCP Discover message? 1.It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast. 2.It uses UDP as the Transport layer protocol. 3.It uses TCP as the Transport layer protocol. 4.It does not use a layer 2 destination address. A.1 only B.1 and 2 C.3 and 4 D.4 only

You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this? A.SMTP B.SNMP C.DHCP D.ARP

Which of the following allows a router to respond to an ARP request that is intended for a remote host? A.Gateway DP B.Reverse ARP (RARP) C.Proxy ARP D.Inverse ARP (IARP)

The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model? A.Application B.Host-to-Host C.Internet D.Network Access

If you use either Telnet or FTP, which is the highest layer you are using to transmit data? A.Application B.Presentation C.Session D.Transport

Which of the following is the decimal and hexadecimal equivalents of the binary number 10011101? A.155, 0x9B B.157, 0x9D C.159, 0x9F D.185, 0xB9

Which statements are true regarding ICMP packets? 1.They acknowledge receipt of a TCP segment. 2.They guarantee datagram delivery. 3.They can provide hosts with information about network problems. 4.They are encapsulated within IP datagrams. A.1 only B.2 and 3 C.3 and 4 D.2, 3 and 4

Which of the following are layers in the TCP/IP model? 1.Application 2.Session 3.Transport 4.Internet 5.Data Link 6.Physical A.1 and 2 B.1, 3 and 4 C.2, 3 and 5 D.3, 4 and 5

Which of the following are TCP/IP protocols used at the Application layer of the OSI model? 1.IP 2.TCP 3.Telnet 4.FTP 5.TFTP A.1 and 3 B.1, 3 and 5 C.3, 4 and 5 D.All of the above

What is the address range of a Class B network address in binary? A.01xxxxxx B.0xxxxxxx C.10xxxxxx D.110xxxxx

Create a list with the names of your group members as string literals. It should look similar to examplelistl. group members YOU FILL THIS IN print(My group members are ) print (groupmembers) Now try creating a list with variables instead of literals, similar to how we defined x, y, and z in the cell above. group member1 group member2

Which of the following commands sets the secret password to Cisco? A.enable secret password Cisco B.enable secret cisco C.enable secret Cisco D.enable password Cisco

Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface? 1.show version 2.show protocols 3.show interfaces 4.show controllers 5.show ip interface A.1, 2 and 4 B.2, 3 and 5 C.3 and 4 only D.None of the above

What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down." A.Physical layer B.Data Link layer C.Network layer D.None. It is a router problem.

Which of the following commands displays the configurable parameters and statistics of all interfaces on a router? A.show running-config B.show startup-config C.show interfaces D.show versions

Which of the following commands will configure all the default VTY ports on a router? A.Router#line vty 0 4 B.Router(config)#line vty 0 4 C.Router(config-if)#line console 0 D.Router(config)#line vty all

You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address? A.show running-config B.show startup-config C.show interfaces D.show protocols

Which command will delete the contents of NVRAM on a router? A.delete NVRAM B.delete startup-config C.erase NVRAM D.erase start

1. Plot the inputoutput characteristic of the circuits illustrated in Fig. 1 below assuming a constantvoltage model and VB 2V. VB D R D (a) R Vino W (c) Vout Vout DR Fig. 1 Vin (b) D R Vout V Vin W R (d) Vout DR

Which component in a high-end gaming computer is likely to draw the most power? When you first turn on a computer and you dont hear a spinning drive or fan or see indicator lights, is the problem hardware or software related? What is a Windows error message called that appears on a blue screen? How many beeps does startup UEFI/BIOS give to

3. A full-wave rectifier is driven by a sinusoidal input Vin = Vocost, where Vo = 3V and =2(60Hz). Assuming VD,on = 800mV, determine the ripple amplitude with a 1000 microfarads smoothing capacitor and a load resistance of 30. 4. In Fig. 3 below, we estimate the ripple seen by the load so as to appreciate the regulation provided by the diodes. The

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(d) The eigen values of an independent matrix are either zero or unity.

Find the evaluate of the parabola y 4ax The parameterise equation of the parabola y y2 are x at2, y 2at dxdt 2at, dydt 2a.

Evaluate integrate (pi,0) (x.sinx1cos2x) dx.

Patricia wants to measure the change in CS in the market for doughnuts when the price increases to 14.50 (box of a dozen doughnuts) but she does not know how to do it. Consider that the demand for doughnuts is p(q) 15 12 q and the supply is p 7q. You can help If you want to help her, calculate the change in CS in this market.

Find solution using north west corner method for the following transportation problem D1 D2 D3 D4 19 30 50 10 70 30 40 60 8 40 20 14 S1 S2 S3 40 Demand 5 8 895 859 958 985 7 Supply 7 9 18 34

Evaluate and compare the design of different memory hierarchies in modern computer systems, including the use of caches, registers, and main memory, and the impact of these design decisions on performance and energy consumption.

Analyze and compare the performance and efficiency of different interconnect technologies for parallel processors, including shared memory, message passing, and hybrid approaches.

Describe the process of designing and implementing a custom microarchitecture for a given problem, considering the trade-offs between performance, power consumption, and cost.

Simplify the Boolean expression using the laws of Boolean algebra. F = (A + B) . (C + D) + (A . B) . (C . D)

Solve the system of linear equations using Gaussian elimination method. x + 2y + 3z = 9 2x + 5y + z = 8 2x + 5y + 4z = 17

Evaluate the definite integral of the function f(x) = x^3 from x = 0 to x = 2.

Change the older of integrators integeral(a, partial) integral(a,y) xx2y2 dxdy and hence evaluate the same.

In a D flip flop What happens when the Set pin is set to one ? What happens when the Reset pin is set to one ? Does it matter what the D input is when either Set or Reset is one?

Let V denote the set of all MxN matrices with real entries. Let F be the field of rational nos defined by all A,B Epsilon Mmxn (F) and c Epsilon F 1)(AB)ij Aij Bij (cA)ijcAij is V a vector space over F

vector Space H with interval 0, OTT with the flege S.T on the at in an 2.,. inner defined product inner product Space.

Vcc 4. Compute the input resistance of the circuits depicted below and assume V Vcc R1 R J ka (a) Rin Vcc H Q (b) R Rin J Q 10 (c)

2. Determine the collector current, operation region and smallsignal model of Q in the following circuits Fig. 2(a) (c). Assume Is 3107A, 100, and V 0. 1.7 V 8 Vcc 1k 2.5 V 20 ( Q Fig. 2 Vcc 2.5 V T 500 Q Vcc 2kQ2 2.5 V

A computer system has a virtual memory of 4 GB and a page size of 4 KB. Calculate the total number of pages in the virtual memory.

A computer system uses a main memory with a capacity of 8 GB and a cache memory with a capacity of 256 MB. If the cache memory hit rate is 95%, calculate the average memory access time.

A computer system has a CPU with a clock speed of 2 GHz and the average instruction execution time is 4 clock cycles. Calculate the average instruction execution time in seconds.

A computer system has a cache with a capacity of 64 KB and a block size of 16 bytes. The computer system has a main memory of 4 GB. The cache is organized as direct-mapped cache. Calculate the number of blocks that can be stored in the cache and the number of sets in the cache.

A computer engineer is designing a new data center and wants to estimate the total power consumption of the server farm. The server farm consists of 100 servers each consuming 350W per hour and 8 hours of operation per day. The engineer wants to estimate the total energy consumption in kilowatt hours (kWh) for a month of 30 days.

A computer system has a cache with a total size of 256 KB and a block size of 16 bytes. Calculate the total number of blocks in the cache.

A computer engineer is designing a file system for a computer system with a disk capacity of 1 TB. a) Calculate the number of blocks in the disk if the block size is 4 KB. b) Calculate the number of blocks required to store a file of size 100 MB if the block size is 4 KB. c) If the file system uses an inode structure to store the information about

A computer engineer is designing a computer system with a virtual memory system. a) Calculate the size of the page table if the virtual memory size is 32 GB, the page size is 4 KB, and each page table entry takes 8 bytes. b) If the physical memory size is 16 GB, calculate the number of page frames in the physical memory.

A computer engineer is designing a cache memory system for a computer processor with a 64-bit address space. a) Calculate the number of cache sets in the cache memory if the cache size is 512 KB, the block size is 64 bytes, and the set associativity is 4-way. b) Calculate the number of tag bits required for the cache memory if the cache size is

A computer engineer is designing a network system with a bandwidth of 100 Mbps and a maximum transmission unit (MTU) of 1500 bytes. a) Calculate the maximum number of packets per second that can be transmitted through the network. b) If a file of size 10 MB needs to be transmitted, calculate the time taken to transmit the file.

A computer engineer is designing a memory management system for an operating system. The memory has a capacity of 4GB and the operating system uses a paging scheme with a page size of 4KB. a) Calculate the number of pages in the memory. b) Calculate the number of bits needed to store the page number in the page table entry. c) Calculate the size

A computer has a 32-bit CPU, and memory with an access time of 200 ns. What is the maximum theoretical speedup that can be obtained by using a cache with a hit time of 50 ns, compared to accessing main memory directly?

5. Compute the output resistance of the following circuits. VB K R Rout VB RB MQ (b) Rout HKQ Rout

For the following cost information, develop a single variable, cost estimating relationship using regression. Find the value of R. What does R represent Cost 62,465.23 59,096.96 118,556.73 83,715.95 82,922.07 39,812.47 125,025.33 72,381.23 116,509.44 64,857.82 85,342.79 94,390.92 82,196.61 128,302.99 99,399.89 88,476.72 81,521.22 62,465.23 Tons

Word can change the case of selected text, but that capability is notably lacking in Excel. Write an Excel subroutine that enables an Excel user to change the case of text in any selected range. In the instruction, inform the user to first select the cell(s) that contain(s) the text to be manipulated before clicking on the button to run the

GIVE A CLEAR DESCRIPTION OF A NEW METHOD PROJECT TOPIC DEVELOPMENT OF A USER APPLICATION FOR THE DETECTION AND CLASSIFICATION OF SICKLE CELL DISEASE IN NEWBORNS USING MACHINE LEARNING TECHNIQUES. FROM THIS TOPIC ABOVE, GIVE A NEW TECHNOLOGICAL IDEA AND NEW METHODOLOGY TO IMPLEMENT THIS PROJECT AND PROPOSE this PROJECT by SOLVING THE CHALLENGES AND

For a 5bit resistive divider, determine the following (a) the weight assigned to the LSB (b) the weight assigned to the 2nd and 3rd LSB (c) the change in output voltage due to a change in the LSB, the 2 LSB, and the 3rd LSB (d) the output voltage for a digital input of 10101. Assume 00 V and 1 10 V.

What are the output voltages caused by each bit in a 5bit ladder, if the input levels are 0 0V and 1 10 V

Suppose that, a countertype AD converter for 8bit is driven by a 500 KHz clock. Fine (a) t maximum conversion time (b) the average conversion time (c) the maximum conversion rate.

An 8 bit DAC has an output voltage range of 02.55v Before it resolution it two ways.

The digital input for a 4bit DAC is 0110. calculate its final output voltage.

Find the output voltage from a 5bit ladder that has a digital input of 11010. Assume that 0 0v and 1 10v.

what is the clock cycle time for a system that uses i) 500 khz clock ii) 8 Mhz clock.

How many flipflops are required to construct a mod128 counter A mod32 counter What is the largest decimal number that can be stored in a mod64 counter

Indicate how many flipflops 3, (b) mod6, (c) mod9. are required to construct each of the following counters (a) mod

Design D divide by 94 counter IC 7490.

What are the trade-offs involved in designing a computer system with a high clock speed, increased instruction level parallelism, and a large cache memory, and how do they impact the overall performance and energy efficiency of the system? Discuss the various techniques used to manage the heat generated by such high-performance systems and their

Describe the various layers of the Internet protocol (IP) stack and explain how data is transmitted from one device to another over the internet. Discuss the role of the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) in transmitting data, and explain the differences between these two protocols in terms of reliability and

Explain the concept of virtual memory and its role in the operation of a computer system. Discuss the different methods used for implementing virtual memory, including paging and segmentation, and compare the advantages and disadvantages of each. Evaluate the impact of virtual memory on system performance, including the trade-offs between