Trigent Software interview questions and answers - Wikitechy

What is Electronic Engineering how to become a good Electronic Engineer ?

Editor — Thu, 05 Aug 2021 05:42:14 +0000

Electronic engineering :

Electronics engineering is a designing order which uses non-direct and dynamic electrical segments, (for example, semiconductor gadgets, particularly transistors, diodes and incorporated circuits) to plan electronic circuits, gadgets, Microprocessors/Microcontrollers and frameworks including VHDL Modeling for Programmable rationale gadgets and FPGAs.
The control regularly additionally outlines inactive electrical parts, typically in view of printed circuit sheets.

How to Become a good Electronic Engineer

The first and most thing you should do as a starting step to be a professional engineer, is to get a degree in electronics and communication.
If you want to be a professional engineer in Embedded System design or VLSI design (two most prominent field of electronics), there are institutes like CDAC, Vector India, VEDAIIT, Maven Silicon and many more which offer short term or long term courses in these fields. Not only that you also get the advantage of being placed in any leading electronics company.
If you want to be a professional engineer in PCB designing, you need to have good working knowledge on design tools like CAD, ORCAD, and Eagle etc. You even need to have basic knowledge about PCB designing and mounting.
If you want to be a professional engineer in VLSI or chip designing, you must have working knowledge in tools like Xilinx, Magic etc and of course must have good VLSI programming skills.
It is not only the knowledge of software tools that can make you a professional engineer, but also good technical skills.
These skills can be having practical knowledge in circuit mounting, soldering or PCB designing , practical knowledge in installation of networking products like routers, switches etc, practical knowledge of working with home automation devices like PLCs or practical knowledge of operating electronic equipments like Oscilloscopes, Wave Generators, Pulse Generators etc.
As a fresher, you can apply for the position of trainee or intern at any reputed company. If you are GATE or NET qualified, you can always apply for the position of research fellowships at any Government recognized research institutes.
A fresher with good theoretical knowledge about subjects related to electronics and communication can also opt for being a technical writer in the field of electronics and communication. Remember this might prove to be a great asset in increasing your exposure to the field of electronics.

What is the difference between Rx Lev Full and Rx Lev Sub ? What you mean by Link Budget? Can you explain ?

Editor — Thu, 05 Aug 2021 05:40:10 +0000

RX Lev Full :

RX Lev Full means Mobile transmit the measurement report(SACCH multiframe) for every 480ms.
This multiframe containes 104 TDMA frames, in 104 TDMA frames 4 TDMA frames for Decode the BSIC and remaining 100 TDMA frames for Average measurment of serving cell and neighbouring cell.
This average measurment of 100 TDMA frames are RX Lev Full.

RX Lev Sub :

DTX is a discontinuous trasmission, When the mobile conversation 40% of the time either Transmitter or Receive is idle. When DTX is ON, DTX will switch off the Transmitter or Receiver when they is no speech Pulses.
Only few TDMA frames will transmit, the average of this TDMA frames is called RX Lev Sub, give you proper measurement of RX level.

Link Budget :

A link budget is accounting of all of the gains and losses from the transmitter, through the medium (free space, cable, waveguide, fiber, etc.) to the receiver in a telecommunication system.

How many mobile subscribers are come under one BTS ? and how many BTS Comes under One BSC ? how many BSC under One MSC ?

Editor — Thu, 05 Aug 2021 05:33:33 +0000

The BTS used in a GSM network comprises the radiotransmitter receivers. It is the defining element for each cell .
The BTS communicates with the mobiles and the interface between the two is known as the Um interface with its associated protocols.
The BSC forms the next stage back into the GSM network. It controls a group of BTSs, and is often co-located with one of the BTSs in its group.
It manages the radio resources and controls items such as handover within the group of BTSs, allocates channels.
It communicates with the BTSs over what is termed the Abis interface.
The main element within the core network area of the overall GSM network architecture is the Mobile switching Services Centre (MSC).
It provides registration, authentication, call location, inter-MSC handovers and call routing to a mobile subscriber.

What is the type of current used by GSM Telecom Equipment ?

Editor — Thu, 05 Aug 2021 05:31:13 +0000

Current used in GSM telecom equipment is DC current.

Explanation:

Logic is very simple. AC can’t be stored and DC can be stored.
Example : Mobile is a GSM device in which DC is used to charge the batteries.

What is GSM ?

GSM (Global System for Mobile Communications) is a second-generation digital mobile telephone standard using a variation of Time Division Multiple Access (TDMA).
It is used for three digital wireless telephone technologies such as CDMA (Code Division Multiple Access), GSM and TDMA.
GSM digitizes and compresses voice data, then sends it down a channel with two other streams of user data, each in its particular time slot.
It works at either the 900, 1800 or 1,900MHz frequency bands.

Why Some Application on Windows Platform is Working Very Slowly ?

Editor — Thu, 22 Jul 2021 07:52:05 +0000

There are various errors in windows platform they are:

- Processor overheating
- Bad RAM
- Hard disk issues
- File system issues and display options

Processor overheating

Recently Chipmakers have been working to make processors more effective, which means they generate less heat.
Now some modern processors still produce a lot of heat.

- Dust is preventing the fan from spinning smoothly.
- The fan motor has failed.
- The fan bearings are loose and jiggling.

Bad RAM

Several conditions can lead to RAM-related performance problems with a particular machine:

- RAM timing is slower than optimal machine spec.
- RAM has minor faults that appear only on detailed testing.
- RAM is overheating.

Hard disk issues

Slow access times on the affected drive.
An increasing number of bad sectors when running scandisk.
Unexplained Blue Screens.
Intermittent boot failures.
An “Imminent Hard Disk Failure” warning.

File system issues and display options

Some file systems work better than others for large disk dividers. Windows 7 should always use the NTFS file system for best performance.
Cleaning up the file system will also help speed performance. We can use the Disk Clean-up tool to:

- Remove temporary Internet files.
- Remove downloaded program files (such as Microsoft ActiveX controls and Java applets).
- Remove the Recycle Bin.
- Remove Windows temporary files such as error reports.
- Remove optional Windows components we don’t use.
- Remove installed programs you no longer use.
- Remove unused restore points and shadow copies from System Restore

To run Disk Clean-up in Windows 7, click Start and type “Disk Clean-up” in the search box. Select the drive you want to clean up.

How to solve this Problem :

Windows have corrupted in many problems we have use below steps, to overcome this issues.

Step 1: Clean boot

It will start Windows by using a minimum set of drivers and start up programs.
It will also eliminate software conflicts that could occur when you install a program, or an update , or when you run a program in Windows.

Step 2: Reset Windows Update Components

These are services that Windows Update needs to make sure it’s working effectively.

Step 3: Perform corruption fix tools

Using Command Prompt running as Administrator, we can perform these commands that can fix issues on our system itself,

CHKDSK /R 
SFC /SCANNOW
DISM /ONLINE /CLEANUP-IMAGE /RESTOREHEALTH

What is the advantages of VB.NET ?

Editor — Thu, 22 Jul 2021 07:43:21 +0000

VB.NET offers code execution that runs under the Common Language Runtime (CLR), resulting in robust, stable and secure applications. Both features of the .NET framework are eagerly obtainable in VB.NET.
VB.NET is object oriented. This is a major addition that VB6 and other earlier releases didn’t have.
The .NET framework comes with ADO.NET, which follows the disconnected paradigm, i.e. once the required records are fetched the connection no longer exists.
It also retrieves the records that are expected to be accessed in the immediate future.
This enhances Scalability of the application to a great extent.
VB.NET uses XML to transfer data between the various layers in the DNA Architecture i.e. data are passed as simple text strings.
Error handling has changed in VB.NET. A new Try-Catch-Finally block has been introduced to handle errors and exceptions as a unit, allowing appropriate action to be taken at the place the error occurred thus discouraging the use of ON ERROR GOTO statement. This again credits to the maintainability of the code.

What is the difference between vb and vb.net ?

Editor — Thu, 22 Jul 2021 07:41:06 +0000

VB	VB.NET
VB stands for Visual Basic. It is a high level programming language that is used for the fast development of Windows based programs.	VB.NET stands for Visual Basic Network Enabled Technology. It is one of the languages for the .NET framework by Microsoft. This language has been created specifically for VB developers. It belongs to the category of object oriented computer programming languages that is implemented on the .NET framework.
Interpreter based Language	Compiled language
VB Runtime	Common Language Specification
This type of language is not safe.	This language is safe compared to visual basic.
Multithreaded applications Cannot be developed.	Multithreaded applications Can be developed.
Data is handled using DAO protocol, then RDO, followed by ADO (ActiveX Data Objects)	Data is handled using ADO.net
An object based language.	A true object oriented language.
Most of the parameters passed by reference.	Parameters passing by Default value.
Objects support default property	Objects does not support default property
Replaced by elements in Collection QBColor, RGB DateAdd, DateDiff, DatePart, DateSerial, DateValue, TimeSerial, TimeValue	System.Collection System.Drawing.Color Replaced by elements in System.DateTime
End Type structure can be used in declare function.	Declared using the Structure…End Structure construct.

What is the difference between sqoop and pig ?

Editor — Thu, 22 Jul 2021 06:59:29 +0000

Pig:

Pig is a platform for managing large data.
It uses high level programming to analyse the data.
The programming is done using the language pig latin.
It is simple and highly specific.
The pig Metastore stores all info about the tables. And we can execute spark sql queries because spark can interact with pig Metastore

Sqoop:

Sqoop is a simple tool used for transferring large amount of data.
It is used for transferring data from hadoop to relational database.
sqoop can import data from Oracle,MYSQL,SQl.
Sqoop metastore is a tool for using hosts in a shared metadata repository. Multiple users and remote users execute saved jobs in metastore.

What is staging table in sqoop ?

Editor — Thu, 22 Jul 2021 06:53:48 +0000

Staging table in sqoop:

Staging table is used to stage the exported data.
Sqoop breaks down method into multiple transactions. A failing job may create partial knowledge.
This could result in job failing because it could cause duplication of data or even collision while insertion.
Staging tables are simple database tables that contain business details.
Staging table acts as an auxiliary table that’s used to transferred data.
Sqoop breaks down export method into multiple transactions, it’s possible that a failing export job may lead to partial data being committed to the database

What is update command in sqoop ?

Editor — Thu, 22 Jul 2021 06:52:07 +0000

Update command in sqoop:

There are two approaches to update in sqoop.
- The records inserted are to be added to the target table.
- The sqoop provides an update mode by providing “update-key ” command.
This command is used to generate the SQl update statement.
If the value in column 1 matches the data is updated else the data is inserted into the table.
This technique is also refered to as upsert where the default action is update but insertion takes place when matching data is not available.

 
$ sqoop export (Generic Arguments)
  --table target-relational-table 
  --update-key column1
  --export-dir /user/my-hdfs-file
  ...
Generates => UPDATE target-relational-table SET
                    column2=1000,column3=2000
		          WHERE column1=100;

What is the use of sqoop ?

Editor — Thu, 22 Jul 2021 06:49:42 +0000

Sqoop uses:

Sqoop is a simple tool that is used for moving data.
It is generally used move data from non hadoop data stores.
These non hadoop data stores are the relational databases and data warehouses .
Sqoop allows the users to specify the target (i.e) the place where the data is to be moved inside of hadoop from relational databases like Oracle,Teredata.
Data ingestion is important in any big data project because the volume of data is generally in petabytes or exabytes.
Hadoop Sqoop and Hadoop Flume are the two tools in Hadoop which is used to gather data from different sources and load them into HDFS.

What is sqoop metastore ?

Editor — Thu, 22 Jul 2021 06:47:16 +0000

Sqoop Metastore:

Sqoop metastore is an internally implemented database that can hold the definition of a given job.
It includes details like which database,which table,which approach,what query to extract from,what target to write to and so on.
Consider an array of SQL databases that have the same structure, but are partitioned by for performance reasons.
Thus we have the same sqoop job running against multiple database instances at the same time, all unified at a single table in Hadoop.
In order to get parallelization, we generate a job that manages the Sqoop sub-workflows. This results in 500 distinct sqoop jobs.
Metastore is used to handle these complexities.

What is sqoop ?

Editor — Thu, 22 Jul 2021 06:22:24 +0000

Sqoop:

Apache Sqoop is efficiently transferring data between Relational databases and Apache Hadoop.
It is used to import data from relational databases such as MySQL, Oracle to Hadoop HDFS, and export from Hadoop file system to relational databases.
It improves the efficiency of data analysis by combining structured data and unstructured data.
Sqoop stands for SQL for Hadoop.SQL + HADOOP =SQOOP

DFD for E-Commerce Website

Editor — Thu, 22 Jul 2021 04:12:25 +0000

DFD for E-Commerce Website

The System is recognized as a complete system “Fruit Bazaar System. The main actors for this system as Admin, Users, ShippingAgent.

DFD for E-Commerce Website

DFD Level 1

User can Log-in, add, remove items to cart, register, pay.
Admin can have privileged login, they can change, modify catalog, to maintain the user data. In cart adding items then they can make an order. Un order database orders are stored.
The orders are processed and items from the warehouse are delivered to customer by shipping agent.

DFD Level 2

CartCustomer/User can browse the catalog and can add items to their cart for ordering. Moreover, Customer can remove items from their cart and after adding items to their cart they can checkout and move to Ordering.
For Order a customer should to be log-in.
Registration Maintenance
Admin can maintain the Catalog. The Catalog contains all items they are in stock with their rates.
Dynamic rates according to market value can also change the catalog information by Admin. He can add and remove the items from catalog and stocks.

User can manage their profile. Profile handling includes changing their account information like email, shipping address, passwords.
If the user has created an invalid account then Admin can be removing the account or can intimate User about any fault in their profile.
Physical Transaction At the time of delivery A shipping Agent which will take the items from warehouse along with the bill and deliver the item to customer.
Customer will pay the respective bill and the bill id will be stored in transaction database.
Cash transaction should be keeping record like in transaction database which will store bill amount and bill id.
LOGINUser enter their login-id along with password. If the entered data is valid combination then homepage will be displayed.
Otherwise a message intimating user about them invalidate login details.
After placing Order Customer will be intimated by an order confirmation mail and sending a SMS containing order details and delivery time.

What is Joomla ?

Editor — Mon, 19 Jul 2021 14:55:01 +0000

What is Joomla ?

Joomla is a free and open-source Content Management System (CMS) for distributing web content.
It is built on a Model-View-Controller (MVC) web application framework that can be used individually, and the CMS that allows to build powerful online applications.
Joomla is one of the most popular website software’s.
Joomla is an independent platform, user friendly, extendable, multilingual, accessible, responsive, search engine optimized and so much more.

What is Content Management System (CMS) ?

CMS is an application (web-based), that provides capabilities for multiple users with different permission levels to manage (all or a section of) content, data or information of a website project, or intranet application.
Managing content refers to creating, editing, archiving, publishing, collaborating on, reporting, distributing website content, data and information.

Uses of Joomla

Joomla is used to whole world and millions of websites of all shapes and sizes. Joomla can be used for,
- Corporate websites or portals, intranets and extranets.
- Small business websites.
- Online magazines, newspapers, and publications.
- E-commerce and online reservations.
- Government, non-profit and organizational websites.
- Community-based, school and church websites or portals.
- Personal or family homepages.

Wind is a Horizontal Movement of air

Editor — Mon, 19 Jul 2021 11:14:07 +0000

1. Wind is

Horizontal movement of air
Vertical movement of air
Movement of air

Answer : A. Horizontal movement of air

Wind is horizontal movement of air from an area of HIGH pressure to an area of LOW pressure.
There are two types of winds:
- local winds
- global winds
Both local and global winds are caused by differences in air pressure due to incapable heating of the Earth’s surface and air above it.

Communication between vCenter Server and ESX ?

Editor — Sun, 18 Jul 2021 22:01:05 +0000

Communication between vCenter Server and ESX

vCenter Server interconnects with the ESX/ESXi host agent through the VMware vSphere API (vSphere API).
When a host is added first to the vCenter Server, vCenter Server sends a vCenter Server agent to run on the host.
The vCenter Server agent acts as a mini-vCenter Server to make the following functions:
- Relays and enforces source allocation decisions complete in vCenter Server, including those that the DRS engine sends.
- Passes virtual machine provisioning and configuration change commands to the host agent.
- The host agent change the commands of host configuration.
- The host agent performance figures, alarms, and error conditions and sends to the vCenter Server.
- ESX/ESXi hosts allows management at different release versions.

Comparison between vsphere versions ?

Editor — Sun, 18 Jul 2021 21:58:20 +0000

Comparison between vsphere versions

vSphere 6.0 released compared as previous versions of vSphere 5.0 instead of most advanced features and improvements available.
The difference between vSphere 5.0, 5.1, 5.5 and vSphere 6.0,

What is the difference between clone and template in VMware VSphere ?

Editor — Sun, 18 Jul 2021 21:54:54 +0000

Difference between clone and template in VMware VSphere

Clone	Template
Clone is a copy of the virtual machine.	A template is a main copy of a virtual machine; many clone made by this template.
You cannot change back the cloned Virtual Machine.	Template can be change back to the virtual machine.
A clone of a virtual machine can be made when the virtual machine is powered on.	Template cannot be powered on.
A full clone is independent from parent virtual machines and does not share anything with virtual machines.	When you clone a virtual machine by the template, the resulting cloned virtual machine is free of the original virtual machine.

What are the components in vSphere product suite ?

Editor — Sun, 18 Jul 2021 21:53:07 +0000

Components in vSphere product suite

The most important components in the vSphere product suite are

ESXi – is a type 1 hypervisor. A hypervisor is a part of software that creates and runs virtual machines. In vSphere, virtual machines are installed on ESXi servers.
vCenter Server – is a centralized management platform and framework that lets you manage virtual machines and ESXi hosts centrally.
vSphere Update Manager – An add-on package for vCenter Server that helps you keep your ESXi hosts and VMs patched with the latest updates.
vSphere Web Client – is a web-based user interface used for handling a virtual infrastructure.
vSphere Client – Windows application a locally installed with a graphical user interface (GUI) everyday handling tasks and virtual infrastructure to be advanced configuration.