Network Solutions: Interview Questions with answer

Network Solutions: Interview Questions with answer:                                                                                                    praveensagar4u.blogspot.com Intervi...

Network Solutions: Latest Network Technologies

Network Solutions: Latest Network Technologies: List of Latest Network Technologies: Artificial Intelligence (AI) Artificial Intelligence   provides opportunity to revolution...

Network Solutions: Troubleshooting Steps For Computer

Network Solutions: Troubleshooting Steps For Computer: Troubleshooting Troubleshooting is the process of figuring out how to solve a computer problem. Even with the most updated software a...

Troubleshooting Steps For Computer

Troubleshooting

Troubleshooting is the process of figuring out how to solve a computer problem. Even with the most updated software and hardware, occasionally computers can malfunction.

In order to solve a problem, you must figure out which part of the system is malfunctioning. You will need to check each component of the computer, unless it is obvious where the problem is coming from. Isolating the problem will help you solve the problem quickly. Knowing how to solve these problems with a shortcut perhaps using only a few keys on the keyboard can save time and effort. 

Backing up your important computer files to another source will ensure that if your problem cannot be corrected, you will still have a safe copy of your information.

Basic Troubleshooting Steps

1.       Close open programs and windows you are not currently using.

2.       Make sure all of your cords are connected properly.

3.       Try to repeat the sequence of commands you performed before the problem occurred. See if this causes the same response by your computer.

4.       Press the F1 key to access the Help window. You can search for a solution to your problem once the Help window appears.

5.       If there is an error message, record the full message for future reference.

6.       Restart your computer to see if it clears the problem. To restart your computer, open the start window and select the Restart button instead of the Log Off button.

7.       If restarting the computer does not clear the problem, shut down the computer and then start it back up again.

8.       If the issue is still not resolved, check the common technology issues below or call your system administrator.

Common Technology Issues

Below we describe some of the most commonly encountered technology issues.  Click on the issue to get more information on possible solutions to correct the problem.

•       The printer is not working.

•       The computer is frozen. A program is not responding.

•       The keyboard is not working.

•       New hardware or software is working incorrectly.

•       The mouse is not working.

•       The computer is slow.

•       The browser’s homepage suddenly changed.

Common Solutions for Technology Issues

Issue: The printer is not working.

•       Check if the printer is turned on. If not, turn it on and try again. 

•       Check if the printer has paper. If not, put paper in the paper tray and try printing again.

•       Check if the printer has a paper jam. If so, remove the paper, close the printer, and try printing again.

•       Ensure that all printer cables are properly connected. 

•       Turn off the printer and turn on again. 

•       Check to see if a new printer driver is needed. Do this by going to the manufacturer’s website to search for your printer model and checking for any updated driver. Seek assistance from your system administrator before installing any drivers. 

Issue: The computer is frozen. A program is not responding.

•       Push the Ctrl, Alt, and Delete keys at the same time. Then, start the Task Manager, highlight the program’s name, and hit the End Task button.

•       Perform a hard reboot by simply pressing the on/off button to turn off the computer manually. This action should only be done as a last resort if you have an unresponsive program or critical error. This process could cause data loss or corruption.          Once the computer is responding again, run a virus check.

Issue: The keyboard is not working.

•       Make sure the keyboard is connected to the computer. If not, connect it to the computer.

•       If you are using a wireless keyboard, try changing the batteries.

•       If one of the keys on your keyboard gets stuck, turn the computer off and clean with a damp cloth.

•       Use the mouse to restart the computer.

Issue: New hardware or software is working incorrectly.

•       Verify your computer meets the requirements of the program or utility.

•       Uninstall and install the program.

•       There could be a conflict with another installed program and you should contact your system administrator.

Issue: The mouse is not working correctly.

•       Check if the mouse is securely plugged into the computer. If not, plug it in completely.

•       Check to see if the cord has been damaged. If so, the mouse may need replacing. 

•       If you are using a cordless mouse, try pushing the connection button on the underside of the mouse to reestablish a connection.

•       Clean the mouse, especially on the bottom.

Issue: The computer is slow.

•       Restart your computer.

•       Verify that there is at least 200-500 MB of free hard drive space. To do so, select Start and click on My Computer or Computer. Then highlight the local C drive by clicking on it once. Select the Properties button at the top left-hand corner of the window; this will display a window showing how much free and used space you have. If you need to recapture space:

-          Empty your recycle bin by right-clicking on the Recycle Bin icon (usually on the desktop), then selecting Empty Recycle Bin.

-          Check your mail files.  Remove any large attachments and delete unused mail. 

-          Images and videos take up a lot of space, so consider moving those to an external drive.

-          Remove temporary files from the Internet.  To do so:

o   Click Start button | My Computer or Computer.  o Click Open Control Panel at the top of the window.  o Click Network | Internet |Internet Options. 

o   Select the General tab and click Delete under Browsing History.

-          Perform a disk cleanup. To do so:

o   Click Start button | My Computer or Computer.  o Highlight the local C drive by clicking on it once. 

o   Select the properties button at the top left of the window.  o Go to the General tab and select Disk Cleanup. 

o   Once the Disk Cleanup finishes running, click on Clean up System Files; this will delete any unnecessary system-related files from your local disk. 

-          Information in computer files changes often, resulting in gaps or spaces within the file. 

This takes up more space on the computer and can cause the computer to slow down. 

To reclaim these gaps in space, run disk defrag. To do so: o Click start | My Computer or Computer.  o Highlight the local C drive by clicking on it once.  o Select the properties button at the top left of the window. 

o Go to the Tools tab and select Run Defragmentation.

•       Old or unused programs that aren’t being used may still have components running behind the scenes when you start your computer, which can slow down the system.  You can prevent these programs from running when you start your computer by removing unused shortcuts and turning off unused program services.  

-          Remove unused shortcuts from Windows startup o Click Start button | Select All Programs | Click Startup o Right-click the shortcuts that you do not use and click delete

-          Disable unused program services o Click Start button | Control Panel | Administrative Tools | Services o For each program/service that you are certain that you do not need, click on the Service to highlight it, click the Stop link to stop the service from running, then double-click the service, choose Startup Type of Disabled, and click OK.

•       Run a virus scan to remove potential viruses that can slow down your computer.

Issue: The browser’s homepage suddenly changed. 

•       This is a common symptom that a virus or browser hijacker may have infected the computer.

•       Try re-setting the home page to the default:

o In Internet Explorer:

§  On the Tools menu, click Internet Options.

§  Click the General tab.

§  In the Address box, type the Web address you want for your home page.  §            Click OK. 

o In Mozilla Foxfire: 

§  Open the web site you want to set as your home page. 

§  Click the icon to the left of the web address and drag it to the Home button. §         Click Yes.

•       If the home page still reverts back to the “new” page, do an Internet search using keywords that include the name of the “new” homepage and the word “virus.” If there is a virus, this search may reveal more information on the virus and how it can be safely removed.           Run a virus scan. 

Latest Network Technologies

List of Latest Network Technologies:

Artificial Intelligence (AI)

Artificial Intelligence provides opportunity to revolutionize networks. We need to continually ensure that the infrastructure and systems rely on the growing digital demands. Due to the continuous revolution, Artificial Intelligence will re-think whether current business models could give the best possible user experience.

Current Uses of AI:

Although artificial intelligence evokes thoughts of science fiction, artificial intelligence already has many uses today, for example:

Email filtering: Email services use artificial intelligence to filter incoming emails. Users can train their spam filters by marking emails as “spam”.

Personalization: Online services use artificial intelligence to personalize your experience. Services, like Amazon or Netflix, “learn” from your previous purchases and the purchases of other users in order to recommend relevant content for you.

Fraud detection: Banks use artificial intelligence to determine if there is strange activity on your account. Unexpected activity, such as foreign transactions, could be flagged by the algorithm.

Speech recognition: Applications use artificial intelligence to optimize speech recognition functions. Examples include intelligent personal assistants, e.g. Amazon’s “Alexa” or Apple’s “Siri”.

Multi Cloud Technology

Multi-Cloud Technology is a heterogeneous architecture of multiple cloud computing and storage devices. A Multi-Cloud Technology utilizes two or more public clouds along with n number of private clouds. hence it is also known as Multi-Cloud Environment. Multi Cloud Technology works as a Service (SaaS) or Platform as a Service (PaaS) but currently referred to as Infrastructure as a Service (IaaS). Hybrid Cloud Technology is a Traditional Technology in comparison with Multi-Cloud Technology.

Hybrid Cloud varies from Multi-Cloud Technology in the following ways:

·  Hybrid Cloud is a combination of a private and public cloud, whereas Multi-Cloud technology is a combination of multiple public clouds and private clouds.

·  Components of a Hybrid Cloud work together, causing the data and processes to inter-mingle. While in a Multi-Cloud situation the usage remains in its cloud’s silo.

·  A Hybrid Cloud Model is indeed a Multi-Cloud Model, but we cannot call a Multi-Cloud Model a Hybrid Cloud Model.

Multi-Cloud Technology allows stakeholders to select solutions which work for their organization hence increasing the ROI. Businesses can thus allocate and maximize resources, and only pay for the ones they use. Multi-Cloud Technology reduces the risk of an attack even when the applications are offline. Multi-Cloud Technologies help reduce the risk of a single point of failure.

Why Use a Multi-Cloud Strategy????

that work across providers. ... A multi-cloud strategy can also improve reliability.

5G  Industrial Revolution

5G is The Next Generation Mobile Internet Connectivity which offers fast speed and decent connections on smartphones and other devices. You will now carry vast amounts of data, which will allow for a smart and connected world. Combining the networks and technology are the latest research will let 5G Network Technology to be the superficial technology in the world.

·  5G Technology will have one-millisecond latency with 1000x bandwidth per unit area along with a 90% reduction in network energy usage

·  5G Networks will expand broadband wireless services from Mobile Internet to IoT

·  5G Services will support LANs and WANs

·  While traveling abroad, 5G users can enjoy 5G roaming experience on visited networks seamlessly

The issue with 5G Technology is about setting up the system. There are wide variations needed. Due to these variations, one system cannot meet the needs. 5G is not a mobile technology but universal access to low and high data rate services.

5G How 5G Works. Like other cellular networks, 5G networks use a system of cell sites that divide their territory into sectors and send encoded data through radio waves. Each cell site must be connected to a network backbone, whether through a wired or wireless backhaul connection

Ericsson is the biggest 5G patent owner with 15.8% of filings, followed by Samsung (14.8%) and Qualcomm (12.9%).

5G and the previous mobile generations at a glance:-

·         1G, the first generation of telecom networks (1979), let us talk to each other and be mobile

·         2G digital networks (1991) let us send messages and travel (with roaming services)

·         2.5G and 2.75G brought some improvement to data services (GPRS and EDGE)

·         3G (1998) brought a better mobile internet experience (with limited success)

·         3.5G brought a truly mobile internet experience, unleashing the mobile apps eco-system

·         4G (2008) networks brought all-IP services (Voice and Data), a fast broadband internet experience, with unified networks architectures and protocols

·         4 G LTE ( for Long Term Evolution), starting in 2009, doubled data speeds

·         5G networks expand broadband wireless services beyond mobile internet to IoT and critical communications segments

       To be continued...