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

Thursday, April 7, 2016

BCA Semester 4: Computer Networks - Circuit Switching vs Data Gram vs Virtual Circuit

 Computer Networks  
Circuit Switching vs Data Gram
vs Virtual Circuit

BCA Semester 4: Computer Networks -  Circuit Switching vs Data Gram vs Virtual Circuit


Q: What are the differences among Circuit Switching, Data Gram and Virtual Circuit?


Answer:


SNo. Circuit Switching Datagram  Virtual-Circuit 
1.   Dedicated transmission path  No dedicated path  No dedicated path 
2.  Continuous transmission of data  Transmission of packet  Transmission of packet 
2.  Fast enough for interactive  Fast enough for interactive  Fast enough for interactive 
4.  Messages are not stored  Packets may be stored until transmitted  Packets may be stored until delivered 
5.  The path is established for entire conversation  Route established for each packet  Route established for entire conversation

Sunday, March 27, 2016

BCA Semester 6 - Data Ware Housing and Data Mining - Q Paper (2015)

END TERM EXAMINATION

SIXTH SEMESTER [BCA] MAY-JUNE - 2015

BCA Semester 6 - Data Ware Housing and Data Mining - Q Paper (2015)

Time: 3 Hours Maximum Marks: 75
Paper Code: BCA302     Subject: DATA WAREHOUSE AND DATA MINING
Attempt Any five questions including Q No. 1 which is compulsory. Select one question from each unit. Calculator is not allowed.
Q1: Answer the following questions:
(a) What is a data warehousing and why it is important for decision support?
(b) What is data preprocessing? Discuss.
(c) Explain different OLAP operations.
(d) What do you understand by frequent patterns? Explain.
(e) Datamining is multidisciplinary field. Explain this statement.
(f) Differentiate between Classification and Clustering.
(g) What are the applications of data mnining? Discuss
(h) Define support and confidence.
(i) Can a data mining system generate interesting patterns? Justify
(j) What is knowledge discovery in Database? Explain


(10 × 2.5 = 25)
Q2: (a) Discuss Data integration and Data transformation in detail.
(b) Explain the architecture of Data mining system with suitable diagram.
(6)
(6.5)
Q3: Differentiate between the following:
(a) OLAP and OLAM
(b) Data mining and KDD
(c) Classification and Prediction.

Friday, March 18, 2016

Semester 2 - Digital Electronics (BCA -106) - Question Paper (2014)

Digital Electronics (BCA -106) - 
Question Paper (2014)


Time: 3 Hours                                                                                              Max. Marks: 75
------------------------------------------------------------------------------------------------------------
Note: Attempt any five questions including Q No. 1 which is compulsory. Select one question from each unit.


Q1: (a) Explain Diode and Transistor as a switch with diagram and table. Give their merits. (5)

(b) Implement XOR gate using universal logic gates only.                                        (5)

(c) Explain Binary Divider using successive subtraction method.                            (5)

(d) What are the applications of Gray Codes and Excess-3 codes?                           (5)

(e) What are the advantages of PROM as compared to PLA and PLD?                   (5)


Q2: (a) Convert A.B.C + A.C expression in standard SOP form and standard POS form.        (6)

(b) Prove A + (BCD) = (A + B)(A+C)(A+D) using Boolean Laws. Also give steps to solve Boolean expression using K-map.                                                                                         (6.5)

Wednesday, March 9, 2016

BCA Semester 4: Software Engineering - Question Paper (2014)

END TERM EXAMINATION

FOURTH SEMESTER [BCA] MAY-JUNE - 2014

BCA Semester 4: Software Engineering - Question Paper (2014)

Time: 3Hours Maximum Marks: 75
Paper Code: BCA208     Subject: SOFTWARE ENGINEERING (Batch 2011 onwards)
Attempt Any five questions including Q No. 1 which is compulsory. Select one question from each unit. Calculator is not allowed.
Q1: Answer the following questions:
(a) What is a software crisis?
(b) Explain ther term 'requirement' in reference to software development.
(c) Why is software development required to be managed?
(d) Discuss the importance of system analysis in brief.
(e) What is a module?
(f) Define Software design.
(g) What is the basic need of measurement in software development?
(h) What is risk mitigation?
(i) Define software testing.
(j) How does cost estimation help?
(10 × 2.5 = 25)
Q2: What is software life cycle? Explain software life cycle model. Write down merits and demerits of various types of software life cycle models.
(12.5)
Q3: (a) Explain the procedure of drawing a DFD for a software system.
(b) How is an SRS organized? Discuss various characteristics of a typical SRS.

blogarama.com