Friday, September 23, 2016

Best MCA Colleges in India

Tuesday, September 20, 2016

BCA Semester 1: Physics - Forms of Energy

BCA Semester 1: Physics - Forms of Energy

Q & A
BCA Semester 1: Physiscs - Forms of Energy


Q(2013): (a) State Law of Conservation of Energy.
                (b) Write the names of different forms of energy.

Answer:
Law of Conservation of Energy: This law states that energy can neither be created nor be destroyed, but can change form. It means total energy of an isolated system cannot change. The total energy E of a system can change only by amounts of energy that are transferred to or from the system.

i.e. W = △E = △Emech + △Eth + △Eint

where △Emech = change in mechanical energy,
△Eth  = change in thermal energy
△Eint = change in other type of internal energy of the system.

Monday, September 12, 2016

BCA 3rd Semester: Computer Architecture (Q and A)

Computer Architecture (Q and A)


BCA 3rd Semester: Computer Architecture (Q and A)

Q1(2012): Define Register Transfer Language with example.

Answer: A register transfer language (RTL) is a notation used to describe the micro-operation transfers between registers. It is a symbolic expression of the micro-operation sequences among register and memory and are used to implement machine-language instructions.

Every statement in Register Transfer Language implies the availability  of hardware circuit which implements the microoperation.
e.g. The statement R2 ← R1 implies the existence of the necessary circuitry to implement the transfer from register (R1) to register (R2).


Q2(2013): Explain the working of cache memory.

Answer: Cache is a high speed memory placed between CPU and main memory to speed up access of data and instructions stored in main memory.

The access time of cache memory is much less (i.e. 80 nano seconds) when compared to main memory access. Cache is not accessible to user. It increases the operating speed of CPU by minimizing its wait cycles while fetching instructions and data from main memory.

The capacity of cache memory is less than that of main memory. Cache memory works under different configurations i.e.

  • Direct Mapping
  • Fully Associative
  • Set Associative



Q3: A computer uses RAM chip of 1024 x 1 capacity. How many chips are needed for providing a capacity of 1024 bytes.

Thursday, August 25, 2016

BCA 5th Sem: Web Based Programming (PHP) - MCQs

MCQs on PHP

BCA 5th Sem: Web Based Programming (PHP) - MCQs

Q1: What PHP stands for?

(a) Hypertext Preprocessor
(b) Pre Hypertext Processor
(c) Pre Hyper Processor
(d) Pre Hypertext Process


Q2: Which of the following is the best all-purpose way to compare two strings?

(a) Using the strpos function
(b) Using the == operator
(c) Using strcmp()
(d) Using strcasecmp()


Q3: Which of the following function formats a local time or date according to locale settings?

(a) strftime
(b) stritime
(c) strhtime
(d) strgtime


Q4: What will happen if you add a string to an integer using the + operator?

(a) The string is discarded and the integer is preserved
(b) The string gets converted to a number and is added to the integer
(c) The interpreter outputs a type mismatch error
(d) The integer is discarded and the string is preserved


Q5: What is the difference between print() and echo()?

(a) echo() can be used as part of an expression, while print() can’t
(b) print() can be used as part of an expression, while echo() can’t
(c) print() can be used in the CLI version of PHP, while echo() can’t
(d) echo() can be used in the CLI version of PHP, while print() can’t


Saturday, April 30, 2016

BCA 4rd Sem: Computer Networks - BASEBAND vs BROADBAND Transmissions

BASEBAND vs
BROADBAND Transmissions 

BCA 4rd Sem: Computer Networks - BASEBAND vs BROADBAND Transmissions

Q & A


Q1: Define bandwidth

Answer: Bandwidth refers to the maximum capacity of a transmission media or channel that can be allocated.


Q2: What are the types of transmission based on bandwidth usage?

Answer: Two types i.e.

  i. Baseband Transmission
  ii. Broadband Transmission


Q3: What is baseband? What are its important features?

Answer: Baseband transmission is a transmission of signals without modulation. It uses the entire bandwidth for a single channel. Baseband is commonly used for digital signaling, but it can also used for analog signal. Signals flow in the form of discrete pulses of electricity or light i.e. 1s and 0s. The entire spectrum of the cable is consumed by the signal. This scheme does not allow frequency-division multiplexing.

Important features of baseband transmission are: 

· Baseband transmission use digital signal over a single frequency.
· Signals flows in the form of discrete pulses of electrical or light.
· The digital signal uses the complete bandwidth of a single channel.
· Baseband systems use repeater.
· No modem is required.
· Used for a short distance.
· Commonly use in Local Area Networks.


Q4: What are the advantages of using baseband cables?

Answer:
  i.   Low maintenance cost.
  ii.  Simple to install and tap.
  iii. Better resistance to signal noise over longer distance.


Q5: What are the disadvantages of using baseband cables?

Answer:
i.   Limited distance and topology.
ii.  Low security, easily tapped.
iii. Difficult to make major changes to the cabling topology.
iv.  Cable cost is higher than that of twisted pair.

Saturday, April 16, 2016

BCA 3rd Semester Result Analysis (2016) College: Maharaja Surajmal Institute

BCA 3rd Semester Result Analysis (2016) 

College: Maharaja Surajmal Institute

VIPS BCA 3rd Semester Result Analysis (2016)

IPU declared result of BCA Examination (Dec 2015). Here follows the analysis and interesting findings of result of BCA students of 3rd Semester from Maharaja Surajmal Institute.

Although effort has been made  to present accurate information, the blog makes no guarantee of that.


1. Total Students Appeared: 57

2. Among the Top five students, 4 are girls

3. The three toppers are:

        Ist Rank: Akansha Bhasin  (92.5%)
        2nd Rank: Aishwarya Dixit (87.87%)
        3rd Rank: Megha Panjwani (85.35%)

4. How many scored more than 75%? - 12 students

5.  How many scored more than 60% -  44

6. How many scored less than 50% -  3

7. Average % Score - 66.79%

8. Average % score of Girls - 74.625%

9, Median Score - 65%

10. Number of students who cleared all papers: 29

Friday, April 15, 2016

VIPS BCA 3rd Semester Result Analysis (2016)

BCA 3rd Semester Result Analysis (2016) 

College: Vivekanand Institute of Professional Studies

VIPS BCA 3rd Semester Result Analysis (2016)

IPU declared result of BCA students (held on Dec 2015), here follows the analysis and interesting findings of result of BCA students of 3rd Semester from VIPS college.

Although effort has been made  to present accurate information, the blog makes no guarantee of that.


1. Total Students Appeared: 173

2. Among the Top five students, 3 are girls

3. The three toppers are:

        Ist Rank: Tejal Bansal (89.25%)
        2nd Rank: Vrinda Singhal (87.75%)
        3rd Rank: Srishti Maheshwari (86.5%)

4. How many scored more than 75%? - 30 students

5.  How many scored more than 60% -  96

6. How many scored less than 50% - 21

7. Average % Score - 62.72%

8. Average % score of Girls - 72.14%

9, Median Score - 61.875%

10. Number of students who cleared all papers: 79

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