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Showing posts with label UGC Net Paper 1 Notes. Show all posts
Showing posts with label UGC Net Paper 1 Notes. Show all posts

Sunday, December 6, 2015

UGC NET Paper 1 Notes: Terms in Mass Communication

Interpersonal communication: 
When communication happen between two or more people (especially when two persons communicating). Also called dynamic communication.

Intra-personal communication: 
When we talk to overselves without saying anything loud.

Public communication Vs. mass communication:
1. In public communication, sender and receiver are together and hence two-way communication is possible. However, in mass communication, sender and receiver are not present in the same room. Hence it is only one-way communication.
2. In public communication, audience is present in a few numbers to some hundreds. Sender can assess the needs of the receivers. However, in mass communication, audience is very large and hence it is very difficult for the sender to assess receivers' needs.

Vertical communication Vs. Horizontal communication:
Vertical communication is upward and downward communication in an organisation. It is obvious that downward communication is sent from top bosses to lower ranked employees. Similarly upward communication happens when lower ranked employees send communication to top management of the company.
Horizontal communication is also called sideways or lateral communication. It occurs between departments/employees of equal rank.

Stereotypes/stereotyping:
Beliefs about members of a group based on learned opinions rather than information about a specific individual.

Two-step flow:
Theory which asserts that information from media is processed first by opinion leaders who then pass it along via interpersonal channels.

Whistle-blowing:
Insiders telling the media what they know about improper practices by others, usually in the same company, with the hope of improving the situation.

Narrowcasting:
Producing and designing media content in order to target a highly specific segment of the audience. Narrowcasting is often practiced by magazines, radio stations and cablecasters. Opposite of broadcasting.

Personal Broadcasting:
The act of individuals producing and designing content and making it available to others via digital media. Examples can include blogs and video clips available on YouTube.

Podcasting:
A method for delivering audio or video files to users who subscribe to them.

Really Simple Syndication (RSS):
A web feed that delivers frequently updated content to users who have subscribed to it, for example, headlines from a website that specializes in news content.

Wiki:
A collaborative website that allows anyone who has access to it to add and edit content. Wikipedia, an online encyclopedia, is an example of a wiki.

Mediated communication:
messages conveyed through an interposed device rather than face-to-face.

Minimal-effects model:
Model that predicts that media will have little influence on behavior.

Third person effect:
The belief that media affects other people more than yourself.

Vanity press:
A publisher that requires its authors to pay the full cost of producing their own books.

Blurb:
Brief laudatory comments that can be placed on the cover of a book/publication.

Inverted pyramid:
News style that packs the most important information into the first paragraph.

Tabloids:
Newspapers characterized by a smaller size than a standard newspaper, a single fold, and abundant photographs.

Yellow journalism:
A style of reporting characterized by unprecedented sensationalism; it reached its peak in the Hearst-Pulitzer circulation wars of the 1890s.

Alternative press:
Publications that provide a different viewpoint on the news, usually one that is politically radical or otherwise out of the mainstream.

Muckraking:
Investigative journalism conducted with the goal of bringing about social reform.

Op-ed:
A newspaper page opposite the editorial page, devoted to personal comment, feature articles, etc.

Chronemics:
The study of how people perceive, structure, and use time as communication

Dramatistic pentad:
Means of analyzin rhetoric in context through looking at the five factors (pentad) of act (what was done), agent (by whom it was done), scene (where it was done), agency (by what means it was done), and purpose (the goal that guided the action)

Gangplank:
Horizontal chain of communication between employees on the same hierarchical level but in different departments.

Gatekeeper:
Any person (or group) who controls what media material eventually reaches the public. Gatekeeping is the term used when certain messages are allowed to pass through and others are blocked.

Glass ceiling:
A barrier preventing females from reaching top positions in many organizations

Grapevine:
An organization's informal channels of communication, based mainly on friendship or acquaintance,

Halo effect:
The tendency for our overall impressions of others to affect objective evaluations of their specific traits; perceiving high correlations between characteristics that may be unrelated.

Kinesics:
Sometimes referred to as "body language"; any movement of the face or body that communicates a message.

Plagiarism:
Use of another person's information, language, or ideas without citing the originator and making it appear that the user is the originator.

Prototype
An organized understanding of what the defining qualities are of some category of people, events, objects, or situations

Red herring:
A fallacy that uses irrelevant information to divert attention away from the real issue.

Technophile:
Literally, a lover of technology.

Two-step flow:
Theory which asserts that information from media is processed first by opinion leaders who then pass it along via interpersonal channels.

Cultivation:
Cumulative process by which television fosters beliefs about social reality including the belief that the world is more dangerous and violent than it actually is.

Culture shock:
The tendency for people to become confused and disoriented as they find it difficult to become adjusted to a new culture.

Decoding:
Process of translating a message into the thoughts or feelings that were communicated.

Encoding:
Process by which the source expresses thoughts or feelings in words, sounds, and physical expressions, which together make up the actual message that is sent.

Glass ceiling:
A barrier preventing females from reaching top positions in many organizations.

Hot media:
McLuhan's term for relatively complete media that do not require significant human participation.

Magic bullet theory:
Influential early perspective on media effects; held that media caused direct and measurable effects on individuals in the mass audience.

Meta-communication:
The process of communicating about communication.

Metaphor:
A figure of speech in which a word or phrase relates one object or idea to another object or idea that are not commonly linked together.

MUM effect:
The reluctance to transmit bad news, shown either by not transmitting the message at all, or by delegating the task to someone else.

Paralanguage:
Vocal (but nonverbal) dimension of speech; the manner in which something is said rather than what is said. The way we vocalize, or say, the words we speak.

Plagiarism:
Use of another person's information, language, or ideas without citing the originator and making it appear that the user is the originator.

Primary public:
The group of people an organization ultimately hopes to influence or gain approval from.

Monday, September 7, 2015

Computer Questions for CBSE -UGC NET Paper I

Computer Questions UGC NET Paper I

In this post, I am sharing the questions on Computer (ICT) topic from previous UGC NET papers. For the benefit of readers, I have also explained the answers of tricky questions. 

Best of Luck for December '15 Examination!!

1 Which number system is usually followed in a typical 32-bit computer ?
(A) 2      (B) 8
(C) 10    (D) 16
2 Which one of the following is an example of Operating System ?
(A) Microsoft Word         (B) Microsoft Excel
(C) Microsoft Access       (D) Microsoft Windows
3 Which one of the following represent the binary equivalent of the decimal number 23 ?
(A) 01011             (B) 10111
(C) 10011             (D) None of the above
4 Which one of the following is different from other members ?
(A) Google          (B) Windows
(C) Linux              (D) Mac
5 Where does a computer add and compare its data ?
(A) CPU              (B) Memory
(C) Hard disk      (D) Floppy disk
6 Computers on an internet are identified by
(A) e-mail address           (B) street address
(C) IP address                 (D) None of the above
7 Which one of the following is not an Internet Service Provider (ISP)?
(A) MTNL                             (B) BSNL
(C) ERNET India                 (D) Infotech India Ltd.
8 The hexadecimal number system consists of the symbols
(A) 0 – 7                               (B) 0 – 9 , A – F
(C) 0 – 7, A – F                   (D) None of these
9 The binary equivalent of (–15) in Decimal form is (2’s complement system is used)
(A) 11110001                      (B) 11110000
(C) 10001111                      (D) None of these
10 1 GB is equal to
(A) 230 bits                           (B) 230 bytes
(C) 220 bits                           (D) 220 bytes
11 The set of computer programs that manage the hardware/software of a computer is called
(A) Compiler system       (B) Operation system
(C) Operating system     (D) None of these
12 S/MIME in Internet technology stands for
(A) Secure Multipurpose Internet Mail Extension
(B) Secure Multimedia Internet Mail Extension
(C) Simple Multipurpose Internet Mail Extension
(D) Simple Multimedia Internet Mail Extension
13 The octal number system consists of the following symbols :
(A) 0 – 7                               (B) 0 – 9
(C) 0 – 9, A – F                   (D) None of the above
14 The binary equivalent of (–19)10 in signed magnitude system is
(A) 11101100                      (B) 11101101
(C) 10010011                      (D) None of these
15. DNS in internet technology stands for
(A) Dynamic Name System
(B) Domain Name System
(C) Distributed Name System
(D) None of these
16. HTML stands for
(A) Hyper Text Markup Language
(B) Hyper Text Manipulation Language
(C) Hyper Text Managing Links
(D) Hyper Text Manipulating Links
17. Which of the following is type of LAN ?
(A) Ethernet
(B) Token Ring
(C) FDDI
(D) All of the above
Answers:
1. A (A digital computer follows only one number system-Binary whose base is 2)
2. D (Rest all are MS-Office applications)
3. B (Read this post on conversion from one number system to another for explanation) 
4. A (Rest all are operating systems)
5. A
6. C (All computers, mobiles connected to Internet have an IP address to identify them)
7. D
8. B (Read this post for explanation)
9. C (Read this post on conversion from one number system to another for explanation) 
10. A 
(1 KB is equal to 1024 bytes, which is equal to 2^10, 1 MB = 1024 KB, which is 2^20, 1 GB=1024 MB, which is 2^30. 1 TB=1024 GB, which is 2^40)
11. C 
12. A 
13. A (Read this post for explanation)
14. C (Read this post on conversion from one number system to another for explanation) 
15. B
16. A
17. D

Questions from Dec '11 Paper:
1. Which of the following operating system is used on mobile phones ?
(A) Windows Vista
(B) Android
(C) Windows XP
(D) All of the above
2. If (y)x represents a number y in base x, then which of the following numbers is smallest of all ?
(A) (1111)
2 (B) (1111)8
(C) (1111)10 
(D) (1111)16
3. High level programming language can be converted to machine language using which of the following ?
(A) Oracle (B) Compiler (C) Mat lab (D) Assembler
4. HTML is used to create
(A) machine language program
(B) high level program
(C) web page
(D) web server
5. The term DNS stands for
(A) Domain Name System
(B) Defense Nuclear System
(C) Downloadable New Software
(D) Dependent Name Server
6. IPv4 and IPv6 are addresses used to identify computers on the internet. Find the correct statement out of the following :
(A) Number of bits required for IPv4 address is more than number of bits required for IPv6 address.
(B) Number of bits required for IPv4 address is same as number of bits required for IPv6 address.
(C) Number of bits required for IPv4 address is less than number of bits required for IPv6 address.
(D) Number of bits required for IPv4 address is 64.

Answers: 
1. B 
2. A (Smaller base always has smaller value for similar digits)
3. B 
4. C 
5. A 
6. C
Questions from June '12 Paper:
1. Each character on the keyboard of computer has an ASCII value which stands for
(A) American Stock Code for Information Interchange
(B) American Standard Code for Information Interchange
(C) African Standard Code for Information Interchange
(D) Adaptable Standard Code for Information Change
2. Which of the following is not a programming language?
(A) Pascal
(B) Microsoft Office
(C) Java
(D) C++
3. Minimum number of bits required to store any 3 digit decimal number is equal to
(A) 3
(B) 5
(C) 8
(D) 10
4. Internet explorer is a type of
(A) Operating System
(B) Compiler
(C) Browser
(D) IP address
5. POP3 and IMAP are e-mail accounts in which
(A) One automatically gets one’s mail everyday
(B) One has to be connected to the server to read or write one’s mail
(C) One only has to be connected to the server to send and receive email
(D) One does not need any telephone lines
Answers: 1. B 
2. B 
3. D (The biggest number of 3 digits is 999. To convert it into binary, we will need at least 10 binary digits since 2^10=1024 in decimal and 2^8=256 in decimal. So rest of choices are wrong.
4. C 
5. C

Questions from June '13 paper:
1. ‘www’ stands for
(A) work with web
(B) word wide web
(C) world wide web
(D) worth while web
2. A hard disk is divided into tracks which is further subdivided into
(A) Clusters
(B) Sectors
(C) Vectors
(D) Heads
3. A computer program that translates a program statement by statement into machine language is called a/an
(A) Compiler
(B) Simulator
(C) Translator
(D) Interpreter
4. A Gigabyte is equal to
(A) 1024 Megabytes
(B) 1024 Kilobytes
(C) 1024 Terabytes
(D) 1024 Bytes
5. A Compiler is software which converts
(A) characters to bits
(B) high level language to machine language
(C) machine language to high level language
(D) words to bits
6. Virtual memory is
(A) an extremely large main memory.
(B) an extremely large secondary memory.
(C) an illusion of extremely large main memory.
(D) a type of memory used in super computers.
Answers: 
1. B 
2. B 
3. D 
4. A (1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, 1 TB = 1024 GB)
5. B 
6. C (Virtual memory is a technique used by Operating System to treat a portion of hard disk as memory to fit large no. of applications for execution. Since physical memory is not increased, virtual memory is in hard disk and not in RAM. Hence, it is just an illusion of large memory)

Questions from Dec '13 Paper:
1. The initial efforts for internet based communication was for
(A) Commercial communication
(B) Military purposes
(C) Personal interaction
(D) Political campaigns
2. Internal communication within institutions is done through
(A) LAN
(B) WAN
(C) EBB
(D) MMS
3. Virtual reality provides
(A) Sharp pictures
(B) Individual audio
(C) Participatory experience
(D) Preview of new films
4. Which of the following is a social network ?
(A) amazon.com
(B) eBay
(C) gmail.com
(D) Twitter
5. The first virtual university of India came up in
 (A) Andhra Pradesh
 (B) Maharashtra
 (C) Uttar Pradesh
 (D) Tamil Nadu 
Answers:
1. B 
2. A 
3. C 
4. D
5. B (Mumbai University in Maharashtra was the first in India to get Harvard-style virtual classroom in 2013)

Questions from June '14 Paper:
1. When a computer is booting, BIOS is loaded to the memory by
(A) RAM 
(B) ROM
(C) CD-ROM 
(D) TCP
2. Which one of the following is not the same as the other three ?
(A) MAC address
(B) Hardware address
(C) Physical address
(D) IP address
3. Identify the IP address from the following :
(A) 300.215.317.3
(B) 302.215@ 417.5
(C) 202.50.20.148
(D) 202 – 50 – 20 – 148
4. The acronym FTP stands for
(A) File Transfer Protocol
(B) Fast Transfer Protocol
(C) File Tracking Protocol
(D) File Transfer Procedure
5. Which one of the following is not a/an image/graphic file format ?
(A) PNG 
(B) GIF
(C) BMP 
(D) GUI
6. The first web browser is
(A) Internet Explorer
(B) Netscape
(C) World Wide Web
(D) Firefox
Answers:
1. B (BIOS is a program loaded by ROM into RAM) 
2. D (First 3 refer to same kind of address)
3. C (According to IPv4 specification, an IP address is a group of 4 decimal values, each separated by "." character. The valid range of each value is 0-255)
4. A 
5. D (GUI means Graphical User Interface, which refers to the type of user interaction with a computer/gadget)
6. C
Questions from Dec'14 Paper:
1. Which one of the following is not a search engine ?
(A) Google 
(B) Chrome
(C) Yahoo 
(D) Bing
2. CSS stands for
(A) Cascading Style Sheets
(B) Collecting Style Sheets
(C) Comparative Style Sheets
(D) Comprehensive Style Sheets
3. MOOC stands for
(A) Media Online Open Course
(B) Massachusetts Open Online Course
(C) Massive Open Online Course
(D) Myrind Open Online Course
4. Binary equivalent of decimal number 35 is
(A) 100011 
(B) 110001
(C) 110101 
(D) 101011
5. gif, jpg, bmp, png are used as extensions for files which store
(A) audio data 
(B) image data
(C) video data 
(D) text data
6. Symbols A-F are used in which one of the following ?
(A) Binary number system
(B) Decimal number system
(C) Hexadecimal number system
(D) Octal number system
Answers:
1. B 
2. A 
3. C 
4. A 
5. B 
6. C

Paper 1 Notes Series: Number systems (ICT)

Friends!

As I mentioned in one of my previous posts, there will be 6 questions on ICT (Information & Communication technology). Most of times, there are 1-2 questions on the topic of number systems and conversions between different numbers systems. Here, I am going to guide you about how to solve these questions without difficulty. 


Read on....

What is number system?

Number system is a way to represent numbers. There are 2 kinds of systems-1. Non-positional 2. Positional. The best example of non-positional system is Roman number system. In a positional system, a value of each digit in a number can be determined using
1. The digit
2. The position of the digit in the number
3. The base of the number system ("base" is the total number of digits available in the number system).

The examples of positional system are:
  1. Binary (Base 2. Digits used : 0, 1)
  2. Octal (Base 8. Digits used : 0 to 7)
  3. Decimal (Base 10. Digits used : 0 to 9)
  4. Hexadecimal (Base 16. Digits used : 0 to 9, Letters used : A- F)
Decimal number system has base 10 as it uses 10 digits from 0 to 9. The successive positions to the left of the decimal point represent units, tens, hundreds, thousands and so on.

Each position in a positional number system represents a "x" power of the base (e.g. 2). Example 2x where x represents the last position - 1. Similar rule can be applied to Octal and Hexadecimal also.

NOTE: The understanding of the above rules will help you in learning how to convert a number from one base to the another.

There are many methods or techniques which can be used to convert numbers from one base to another. For example:
  1. Decimal to Other Base System
  2. Other Base System to Decimal
  3. Other Base System to Non-Decimal
  4. Shortcut method - Binary to Octal
  5. Shortcut method - Octal to Binary
  6. Shortcut method - Binary to Hexadecimal
  7. Shortcut method - Hexadecimal to Binary
The easiest way to understand how the conversion techniques work is to learn a few basic tricks:-

1. When converting a decimal number to others, apply division method
2. When converting a non-decimal number to decimal, apply addition method.
3. Under addition method, we first obtain the value of RHS by first multiplying it with base raised to power X, then adding it with the value at next position.
4. Under division method, we always divide the number in question with the base of the target number system. Its steps are:

Step 1 - Divide the decimal number to be converted by the value of the target base.
Step 2 - Get the remainder from Step 1 as the rightmost digit (least significant digit) of new base number.
Step 3 - Divide the quotient of the previous divide by the new base.
Step 4 - Record the remainder from Step 3 as the next digit (to the left) of the new base number.

Repeat the above steps till the number becomes less than the base of the target. In this case, we will stop when number becomes 1, which is less than the divisor.

1. Here, we give an example of conversion from decimal to binary:

Step
Operation
Result
Remainder
Step 1
35 / 2
17
1
Step 2
17 / 2
8
1
Step 3
8 / 2
4
0
Step 4
4 / 2
2
0
Step 5
2 / 2
1
0
Step 6
1/2
0
1

Now, arrange the remainder in the reverse order so that the first remainder becomes the least significant digit (LSD) and the last remainder becomes the most significant digit (MSD).
Thus the binary of 35 is 1000112.
The similar steps will be applied when you convert a decimal no. to octal or hexadecimal. The only thing that will change will be the divisor, i.e. it will be the base of target number system.


2. Now, steps for converting From other base system to Decimal System

Step 1 - Determine the column (positional) value of each digit, starting from the rightmost digit first.
Step 2 - Multiply the digit with the base raised to power X (starting from 0, then increment it by 1 at each digit position of source number system.)
Step 3 - Sum the products calculated in Step 2. The total is the equivalent value in decimal.

Here is an example to make it simple to understand.

We take the same number we obtained in previous example, i.e. 100011 to convert it back into decimal:

Step
Binary Number
Decimal Number
Step 1
1000112
( (1 x 25) + (0 x 24) + (0 x 23) + (0 x 22) + (1 x 21) + (1 x 20))10
Step 2
1000112
(32 + 0 + 0 + 0 + 2 + 1)10
Step 3
1000112
3510

3. When converting from other Base Systems to Non-Decimal System, steps will be a little different. 

Step 1 - Convert the original number to a decimal number (base 10).
Step 2 - Convert the decimal number so obtained to the new base number. Example:

Octal Number : 258
Calculating Binary Equivalent:
Step 1 : Convert to Decimal
Step
Octal Number
Decimal Number
Step 1
258
((2 x 81) + (5 x 80))10
Step 2
258
(16 + 5 )10
Step 3
258
2110
Octal Number : 258 = Decimal Number : 2110
Step 2 : Convert Decimal to Binary
Step
Operation
Result
Remainder
Step 1
21 / 2
10
1
Step 2
10 / 2
5
0
Step 3
5 / 2
2
1
Step 4
2 / 2
1
0
Step 5
1 / 2
0
1
Decimal Number : 2110 = Binary Number : 101012
Octal Number : 258 = Binary Number : 101012

4. Shortcut method - Binary to Octal

Step 1 - Divide the binary digits into groups of three (starting from the right).

Step 2 - Convert each group of three binary digits to one octal digit.

Example: Binary Number: 101012

Calculating Octal Equivalent:
Step
Binary Number
Octal Number
Step 1
101012
010   101
Step 2
101012
28   58
Step 3
101012
258
Binary Number: 101012 = Octal Number : 258
5. Shortcut method - Octal to Binary
Step 1 - Convert each octal digit to a 3 digit binary number (the octal digits may be treated as decimal for this conversion).
Step 2 - Combine all the resulting binary groups (of 3 digits each) into a single binary number.
Example: Octal Number : 258
Calculating Binary Equivalent:
Step
Octal Number
Binary Number
Step 1
258
210 510
Step 2
258
0102 1012
Step 3
258
0101012
Octal Number: 258 = Binary Number : 101012
6. Shortcut method - Binary to Hexadecimal
Step 1 - Divide the binary digits into groups of four (starting from the right).
Step 2 - Convert each group of four binary digits to one hexadecimal symbol.
Example: Binary Number: 101012
Calculating hexadecimal Equivalent:
Step
Binary Number
Hexadecimal Number
Step 1
101012
0001 0101
Step 2
101012
110 510
Step 3
101012
1516
Binary Number: 101012 = Hexadecimal Number : 1516
7. Shortcut method - Hexadecimal to Binary
Step 1 - Convert each hexadecimal digit to a 4 digit binary number (the hexadecimal digits may be treated as decimal for this conversion).
Step 2 - Combine all the resulting binary groups (of 4 digits each) into a single binary number.
Example: Hexadecimal Number: 1516
Calculating Binary Equivalent:

Step
Hexadecimal Number
Binary Number
Step 1
1516
110 510
Step 2
1516
00012 01012
Step 3
1516
000101012
Hexadecimal Number: 1516 = Binary Number : 101012

I hope this post will help you understand the concept and you will be able to answer any question on Number System without mistake.
Best of Luck for December' 15 Exam!!