Informatics Assistant 2018 Capsules -1

                                       DOITC Informatics Assistant   
                                       
                                                   Capsules -1

                                      (Computer Fundamental )

                           

Q.1 In which topology primary and secondary hubs are used?

A. Mesh Topology              B. Tree Topology

C. Bus topology D. Ring Topology

Q.2 What is the meaning of Bandwidth in Network?

A. The transmission capacity of communication channels

B. Connected Computers in the Network

C. Class of IP used in Network

D. None of Above

Q.3 ADSL is the abbreviation of

A. Asymmetric Dual Subscriber Line

B. Asymmetric Digital System Line

C. Asymmetric Dual System Line

D. Asymmetric Digital Subscriber Line

Q.4 What is the use of Bridge in Network?

A. to connect LANs  

B. to separate LANs

C. to control Network Speed

D. All of the above

Q.5 The router operates in which layer of OSI Reference Model?

A. Layer 1 (Physical Layer)

B. Layer 3 (Network Layer)

C. Layer 4 (Transport Layer)

D. Layer 7 (Application Layer

Q.6 Each IP packet must contain

A. Only Source address  

B. Only Destination address

C. Source and Destination address

D. Source or Destination address

Q.7 Bridge works in which layer of the OSI model?

A. Application layer B. Transport layer

C. Network layer D. Data link layer

Q.8. _______ provides a connection-oriented reliable service for sending messages

A. TCP                  B. IP   

C. UDP                 D. All of the above 

Q.9. Which layers of the OSI model are host-to-host layers?

A. Transport, Session, Presentation, Application

B. Network, Transport, Session, Presentation

C. Data link, Network, Transport, Session

D. Physical, Data link, Network, Transport

Q.10. Which of the following IP address class is Multicast

A. Class A                B. Class B 

C. Class C                D. Class D

Q.11 Which of the following is correct regarding Class B Address of IP address

A. Network bit – 16, Host bit – 16

B. Network bit – 16, Host bit – 14

C. Network bit – 18, Host bit – 16

D. Network bit – 12, Host bit – 14

Q.12. The last address of sub net mask represents

A. Unicast address              B. Network address

C. Broadcast addresses D. None of above

Q.13 How many bits are there in the Ethernet address?

A. 64 bits   B. 48 bits   C. 32 bits   D. 16 bits

Q.14 Direction of flow signal is define by?
A. Topology``                          B. Line Configuration
C. Transmission Mode             D. None Of above

Q.15 Why is IP Protocol considered as unreliable?
A. A packet may be lost  
B. Packets may arrive out of order
C. Duplicate packets may be generated
D. All of the above

Q.16 . What is the minimum header size of an IP packet?
A. 16 bytes                    B. 10 bytes       C. 20 bytes                   D. 32 bytes

Q.17 Which of the following provides reliable communication?
A. TCP              B. IP                C. UDP                    D. All of the above

Q.18 . What is the address size of IPv6?A. 32 bit    B. 64 bit   C. 128 bit   D. 256 bit

Q.19 What is the size of Network bits & Host bits of Class A of IP address?
A. Network bits 7, Host bits 24            B. Network bits 8, Host bits 24
C. Network bits 7, Host bits 23            D. Network bits 8, Host bits 23

Q.20 What does protocol define?
A. A protocol defines what data is communicated.
B. A protocol defines how data is communicated.
C. A protocol defines when data is communicated
.D. All of above.

Department of Information Technology and Communication (DOITC)

Department of Information Technology and Communication(DOITC) Rajasthan provides technical and nontechnical job in government sector. Last vacancy was offered in 2013 for the various posts of Informatics Assistant. Now the recruitment,(DOITC)  department  is going to release a recruitment notification for the many posts jobs. The candidates those are interested and  eligible for mention particular vacancies can apply online application form which is provides soon on the official link of it. 

Office Site Link to Click Here

1302 Posts of DOITC Informatics Assistant, IA vacancy 2018-19  Department Name – DOITC Post Name – Information Assistant (IA) Number of Posts – 1302 posts Age Limits – 21 years to 40 Years Education Qualification – Graduation Degree Application Fees – General Candidate Fees – Rs 500/- OBC / SBC Candidate Fees – Rs 250/- SC / ST / Other Candidates Fees- Rs 150/- DOITC 1302 Informatics Assistant (IA) Syllabus 2018  FOR MORE DETAIL

EXCEL PRACTICAL ASSIGNMENT

EXCEL PRACTICAL ASSIGNMENT 1.                          Download Here

Computer Skills Efficiency Test

Computer  Efficiency Test

1.Rajasthan High Court LDC Efficiency Test Assignment- 1.       Download Here

5.Rajasthan High Court LDC Efficiency Test Assignment- 5.      Download Here

Rajasthan High Court LDC Exam 2017

The Rajasthan High Court, Jodhpur has announced the notification for Rajasthan High Court LDC Examination .Pattern & Syllabus 2017 Clerk Steno PDF on its official site on date February 18, 2017 (In Official Advertisement). Candidates, who wants to apply application for LDC & Steno Exam or was applied application, must read the Rajasthan Session Court Clerk Exam Pattern & Syllabus 2017 PDF in details for Exam Preparations from its official site. (www.hcraj.nic.in.)

Name of LDC Exam Organization: Rajasthan High Court, Jhodhpur

Total Number of Vacancy: 2039 (1726 vacancy – LDC & 313 vacancy – Stenographer)

Name of Post:

1. Lower Division Clerk (LDC)

2. Stenographer

Notification Release Date:    18th Feb 2017

Application Form Date:            22nd Feb to 18th March 2017

Application Mode:                      Online Application

Date of Written Exams:            23- july- 2017

Official Web Site Link:             www.hcraj.nic.in.

High Court of Raj LDC Computer Test (Typing Test & Efficiency Test) Details:

The Computer Test (Efficiency & Speed Test) shall consist of two level:-

• Paper-I Speed Test
• Paper-II Efficiency Test

S. No.	Name of Paper	Max Marks	Min Marks	Time Duration
1.	Paper 1 (Speed Test)	50	20	10 Minutes
2.	Paper 2 (Efficiency Test)	50	20	10 Minutes

•  Minimum speed should be 8000 key depressions per hour on computer.
•  Data will have to be fed in Hindi or Dual Language (i.e. Hindi and English).
• The marks in the Speed Test shall be awarded as the following given formula:
•  (20/8000) x Net Speed (in depressions per hour)
•  The font for Computer Test shall be “Kruti Dev 010” for Hindi and “Calibri” for English.
•   Min Qualify Marks is 20 each paper (Both papers require 40 marks)

Satellite Communication

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. There are over 2,000 communications satellites in Earth’s orbit, used by both private and government organizations.

What is Satellite Communication?

In satellite communication, signal transferring between the sender and receiver is done with the help of satellite. In this process, the signal which is basically a beam of modulated microwaves is sent towards the satellite. Then the satellite amplifies the signal and sent it back to the receiver’s antenna present on the earth’s surface. So, all the signal transferring is happening in space. Thus this type of communication is known as space communication.

Two satellites which are commonly used in satellite communication are Active and passive satellites.

Passive satellites: It is just a plastic balloon having a metal coated over it. This sphere reflects the coming microwave signals coming from one part of the earth to other part. This is also known as passive sphere. Our earth also has a passive satellite i.e. moon.

Active satellites: It basically does the work of amplifying the microwave signals coming. In active satellites an antenna system, transmitter, power supply and a receiver is used. These satellites are also called as transponders. The transmitters fitted on the earth generate the microwaves. These rays are received by the transponders attached to the satellite. Then after amplifying, these signals are transmitted back to earth. This sending can be done at the same time or after some delay. These amplified signals are stored in the memory of the satellites, when earth properly faces the satellite. Then the satellite starts sending the signals to earth. Some active satellites also have programming and recording features. Then these recording can be easily played and watched. The first active satellite was launched by Russia in 1957. The signals coming from the satellite when reach the earth, are of very low intensity. Their amplification is done by the receivers themselves. After amplification these become available for further use.

Microwave communication is possible only if the position of satellite becomes stationary with respect to the position of earth. So, these types of satellites are known as geostationary satellites.

What are the requirements for a satellite to be geostationary?

1.         Its revolutionary direction must be same as that of the earth, i.e. from west to east.

2.         The time period of satellite’s revolution must be same to the time period of the rotation of earth along its polar axis, which is equal to 24 hours.

3.         The equatorial plane of earth must be coplanar with the orbital plane of the satellites revolution.

The name given to the orbit of the geo-stationary satellites is synchronous orbit. Due to this geo-stationary satellites are also called as geo-synchronous satellites. Geo-synchronous orbit is at a height of nearly 36000km from the surface of earth.

These orbits are capable of giving a successful communication link between two stations present on the earth. These satellites can handle communication up to large distances. But it is impossible for a single geo-stationary satellite to cover the whole earth and provide a communication link. Due to curvature of earth the stations will be out of sight after covering some distance. If we want to cover the whole earth then we have to put three satellites onto the geosynchronous orbit. These satellites can cover the earth if all are inclined at an angle of 120o to each other.

A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period. Such a satellite returns to the same position in the sky after each sidereal day, and over the course of a day traces out a path in the sky that is typically some form of anal Emma. A special case of geosynchronous satellite is the geostationary satellite, which has a geostationary orbit – a circular geosynchronous orbit directly above the Earth's equator. Another type of geosynchronous orbit used by satellites is the Tundra elliptical orbit.

Geosynchronous satellites have the advantage of remaining permanently in the same area of the sky, as viewed from a particular location on Earth, and so permanently within view of a given ground station

Artificial satellites are human-built objects orbiting the Earth and other planets in the Solar System. This is different from the natural satellites, or moons. A satellite is an object that orbits another object. In space, satellites may be made by man, or they may be natural. The moon is a natural satellite that orbits the Earth. Most man-made satellites also orbit the Earth, but some orbit other planets, such as Saturn, Venus or Mars, or the moon.

Satellites are used for many purposes. There are weather satellites, communications satellites, reconnaissance satellites, astronomy satellites and many other kids and stupid idiots.