Question Discussion & Solution

Hypertext transfer protocol (HTTP):

• HTTP is used to access data on the world wide web. HTTP functions as a combination of FTP and SMTP. HTTP uses the services of TCP port number 80. HTTP is a stateless protocol.
• HTTP prior to version 1.1 specified a non-persistent connection, while a persistent connection is a default.
• In a non-persistent connection, one TCP connection is made for each request/ response. The client opens a TCP connection and sends a request and server sends the response then closes the connection.

File Transfer Protocol (FTP):

• FTP stands for file transfer protocol. It is provided by TCP/IP for copying a file from one host to another. FTP can transfer a file through one of the following three modes: stream mode, block mode and compressed mode. Stream mode is the default mode.
• FTP uses two TCP connections one for data and another for control.

Simple Transfer Protocol (SMTP):

• SMTP is a push protocol, it can push the messages from the client to the server only.
• SMTP uses one TCP connection at a time

TELNET:

• TELNET is a client/ server application that allows a user to log on to a remote machine, giving the user access to the remote system.
• TELNET uses one TCP connection at a time.

Important Point:

Option 1 is not correct since HTTP might have more than one TCP connections for a single web page.

In this question shows that Ear, Eyes and Nose present outer part of the body but Liver present inner part of the body.

Hence, option 4 is the correct answer.

The correct answer is World Wide Web.

Key Points

• Web service is a standardized medium to propagate communication between the client and server applications on the WWW (World Wide Web). 
  • A web service is a software system that supports interoperable machine-to-machine interaction over a network.
  • It has an interface described in a machine-processable format (specifically, Web Service Definition Language, or WSDL).
  • Web services fulfil a specific task or a set of tasks.
  • The nature of the interface hides the implementation details of the service so that it can be used independently of the hardware or software platform on which it is implemented and independently of the programming language in which it is written.

Additional Information

• A protocol is a set of rules or procedures for transmitting data between electronic devices, such as computers.
• The protocol that is used for transferring both text and binary files over the Internet is File Transfer Protocol (FTP).
• Hypertext Transfer Protocol (HTTP) is a protocol for transmitting hypermedia documents, such as HTML.
• Hypertext Transfer Protocol Secure (HTTPS) is a secure version of the HTTP protocol that uses encryption and authentication.

The correct answer is option 2 i.e 19.

• Potassium is a member of the alkali group of the periodic table.
  • Symbol: K.
  • Atomic number: 19.
  • Belongs to group 1 in the periodic table.
  • First isolated in 1807 by Humphry Davy.
  • Sodium and Potassium are the elements known as soft metals(can cut with a knife with little force).
  • Potassium metal is kept in kerosene due to its high reactivity with water.
  • Potassium bicarbonate is the chemical used in fire extinguishers.
  • Potassium is the most common radioisotope in the human body.
  • Potassium is the second least dense metal after lithium.
• Atomic Number 17: Chlorine.
• Atomic Number 18: Argon.
• Atomic Number 20: Calcium.

The correct answer is 2, 3, 4, 1.

• Chauhan Dynasty as per the chronological order:
  • Ajayraj - (1110 - 1135 AD).
  • Arnoraj - (1135 - 1150 AD).
  • Vigraharaj IV - (1150 - 1164 AD).
  • Prithviraj III - (1178 - 1192 AD).

Key Points

• According to the Raj Shekhar Prabandh Kosh, the Chauhan dynasty was established by Vasu Dev Chauhan in 551 AD.
  • Their initial capital was Ahichhitarpur.
  • After Vasudev Chauhan comes Samant Raj as his successor.
  • Durlabh raj was the first Chauhan emperor when the Muslims invaded Ajmer.

Additional Information 

• The Chauhan Dynasty:
  • The word Chauhan is the vernacular form of the Sanskrit term Chahamana.
  • While the earlier versions of Chandbardai's work Prithviraj Raso do not mention Chauhan as born from Agnikunda, the later versions do.
  • The 15th-century Hammira Mahakavya of Nayachandra Suri & Jayanayak's Prithviraj Vijay considers Chauhans as Suryavanshi. 
  • Based on Bijloia Inscription, Dr. Dasrath Sharma considers that the early ancestor of Chauhan was born at Ahichchhatrapura in the gotra of sage Vatsa. Ahichchhatrapura can be identified with modern Nagaur.
  • Chahamanas probably started out as petty rulers of Ahichchhatrapura. As the Chahamana territory expanded, the entire region ruled by them came to be known as Sapadalaksha.
• Major Chauhan dynasties include:
  • Chauhans of Shakambhari.
  • Chauhans of Ranthambore.
  • Chauhans of Jalore.