Question Discussion & Solution

(E_Name, Salary_in_Lakhs) is the key

(E_Name, Salary_in_Lakhs) → {E_ID, E_Age, E_mail}

E_Name: Nitesh is repeated

Check only for Nitesh

(Nitesh, 9) → (XE005, 24, nitestSE@123)

(Nitesh, R) → (XE023, 24, nitestCE@123)

Since right hand side is not same

Therefore, R cannot be equal to 9

Udaipur is NOT correct.

• The princely state, Udaipur which was not the part of Rajasthan Union formed on 25th March 1948.
• The Kota Naresh (Bhim Singh II) was appointed as the Rajpramukh and Shri Gokul Lal Asawa was appointed as the Chief Minister.
• State merged:
  • Banswara, Bundi, Dungarpur, Jhalawar, Pratapgarh, Kota, Tonk, Shahpura, Kishangarh.

Additional Information

Stages of the Unification of Rajasthan:

• Matsya Union: The first stage took place on 18 March 1948.
  • Bharatpur, Dholpur, Karauli and Alwar formed Matsya Union.
  • Shobhlal Kumawat became the Prime Minister.
  • Capital - Alwar
• Rajasthan Union: The second stage took place on 25 March 1948.
  • Banswara, Bundi, Dungarpur, Jhalawar, Kishangarh, Pratapgarh, Shahapura, Tonk and Kota formed a Rajasthan Union separate from Matsya Union.
  • The head of Kota was appointed as the Rajpramukh and Shri Gokul Lal Asawa was appointed as the Chief Minister.
• United of Rajasthan: In the third stage on 18 April 1948 Udaipur was merged into Rajasthan Union.
  • Manikyalal Verma became the Prime Minister.
  • Capital - Udaipur
• Greater Rajasthan: In the fourth stage on 30 March 1949, Jaipur, Jodhpur, Bikaner and Jaisalmer are merged into United Rajasthan.
  • Heeralal Shashtri became the Prime Minister.
  • Udaipur king Bhupal Singh became Chief King.
• United States of Greater Rajasthan: In the fifth stage on 15 May 1949, Matsya Union was merged with Greater Rajasthan. 
  • Heeralal Shashtri became the first Chief Minister of Rajasthan.
• United Rajasthan: The sixth stage was completed by 26 Jan 1950.
  • 18 states of the United Rajasthan & princely state of Sirohi got merged with the exception of Abu & Delwara.
• Rajasthan: The seventh stage was completed on 1 November 1956.
  • Ajmer – Merwara, Abu – Dilwara (Sirohi) and Sunel Tappa of Bhanpura tehsil of Mandsaur district of Madhya Pradesh were included in Rajasthan and the Sironj subdivision of Jhalawar was given to Madhya Pradesh.
  • Mohanlal Sukhadia became Chief Minister and Gurumukh Nihal Singh became Governor.

The correct answer is Single-User Operating System.

Important Points

• Single-User Operating System
  • Performs a single task for Single-user.
  • This operating system is designed to manage the computer so that one user can effectively do one thing at a time.
  • Examples include Microsoft Windows.

Additional Information

• The different types of Operating System:
• Batch Operating System
  • There is no direct communication between the computer and the OS.
  • There is an intermediate, the Operator.
  • The operator distributes the work into batches.
• Real-Time Operating System
  • The processing time is very small between the user’s command and the output such that there is no operator.
• Time-Sharing Operating System
  • Multiple people at various computers can use a program at the same time.
• Distributed Operating System
  • When two or more systems are connected to each other and one can open each other's files.
• Embedded Operating System
  • These special Operating systems are built into larger systems.
  • They are limited to single specific functions like an ATM.
• Network Operating System
  • They have one main server which is connected to other client servers.
  • It provides a secure operating system for working with multiple users.

The pattern followed is

The correct answer is Bit.

Key Points

• Bit 
  • ​A bit or binary digit is the smallest unit of measurement used to quantify computer data.
  • It contains a single binary value of 0 or 1.
  • A single bit can define a boolean value of True(1) or False(0).
  • Generally, data transfer rates are measured in bits.
•  Binary Number System
  • ​It contains two unique digits 0s and 1s.
  • It is also known as the Base 2 system.
  • The binary numbers 0 and 1 are called a bit.
  • The computer always calculates input in binary form.
  • Gottfried Wilhelm Leibniz developed the binary system

Additional Information

• Byte
  • ​A byte is a unit of digital information that most commonly consists of eight bits.
  • A byte is the number of bits used to encode a single character of text in the computer.
• Nibble 
  • ​A nibble is a four-bit aggregation or half an octet.
  • it is also known as half-byte or tetrad.
• BCD
  • ​In computing and electronic systems, binary-coded decimal is a class of binary encodings of decimal numbers where each digit is represented by a fixed number of bits.
  • It is implemented in the instruction set of machines.