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AP-CET'S SCHEDULE 2014

S.No Type of Exam Exam Date Issue of Exam Notification Declaration of Results/Marks
1 EAMCET 17th May 2014 10th Feb 2014 2nd June 2014
2 ICET 23rd May 2014 14th Feb 2014 9th June 2014
3 ECET 10th May 2014 4th Feb 2014 19th May 2014
4 EdCET 2nd June 2014 5th March 2014 23rd June 2014
5 LAWCET & PGLCET 8th June 2014 4th March 2014 19th June 2014
6 PECET 5th May 2014 7th March 2014 -
7 PGECET 26th May 2014 to 29th May 2014 28th Feb 2014 17th June 2014
Other CET's Schedule 2014
Type of Exam Date of Exam
BIE, A.P 13th March to 29th March 2014
IIT-JEE (Main) 6th April 2014
JEE (Advance) 25th May 2014
VITEEE 9th April to 20th April 2014
SRM 17th April to 22nd April 2014
KCET 1st May to 2nd May 2014
AIPMT 4th May 2014
CLAT 11th May 2014
CMC, Vellore May 3rd Week 2014
AIIMS 1st June 2014

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10 REASONS WHY PERSONAL COMPUTER CRASH YOU MUST KNOW

You have just been struck by the Blue Screen of Death. Anyone who uses Microsoft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?
1. HARDWARE CONFLICT
The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.
For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.
If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:
* Start-Settings-Control Panel-System-Device Manager. Often if a device has a problem a yellow ‘!’ appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.
Sometimes a device might share an IRQ with something described as ‘IRQ holder for PCI steering’. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.
Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).
When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity. To be fair to Microsoft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.
2. BAD RAM
RAM-(random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.
But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.
One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.
Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.
EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.
3.BIOS SETTINGS
Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.
Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.
A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer’s display.
Microsoft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to ‘yes’ to allow Windows to do this.).
4. HARD DISK DRIVES
After a few weeks, the information on a hard disk drive starts to become piecemeal or fragmented. It is a good idea to defragment the hard disk every week or so, to prevent the disk from causing a screen freeze. Go to * Start-Programs-Accessories-System Tools-Disk Defragmenter This will start the procedure. You will be unable to write data to the hard drive (to save it) while the disk is defragmenting, so it is a good idea to schedule the procedure for a period of inactivity using the Task Scheduler. The Task Scheduler should be one of the small icons on the bottom right of the Windows opening page (the desktop).
Some lockups and screen freezes caused by hard disk problems can be solved by reducing the read-ahead optimization. This can be adjusted by going to * Start-Settings-Control Panel-System Icon-Performance-File System-Hard Disk. Hard disks will slow down and crash if they are too full. Do some housekeeping on your hard drive every few months and free some space on it. Open the Windows folder on the C drive and find the Temporary Internet Files folder. Deleting the contents (not the folder) can free a lot of space.
Empty the Recycle Bin every week to free more space. Hard disk drives should be scanned every week for errors or bad sectors. Go to * Start-Programs-Accessories-System Tools-Scandisk Otherwise assign the Task Scheduler to perform this operation at night when the computer is not in use.
5. FATAL OE EXCEPTIONS AND VXD ERRORS
Fatal OE exception errors and VXD errors are often caused by video card problems. These can often be resolved easily by reducing the resolution of the video display. Go to * Start-Settings-Control Panel-Display-Settings Here you should slide the screen area bar to the left. Take a look at the colour settings on the left of that window. For most desktops, high colour 16-bit depth is adequate. If the screen freezes or you experience system lockups it might be due to the video card. Make sure it does not have a hardware conflict. Go to * Start-Settings-Control Panel-System-Device Manager Here, select the + beside Display Adapter. A line of text describing your video card should appear. Select it (make it blue) and press properties. Then select Resources and select each line in the window. Look for a message that says No Conflicts. If you have video card hardware conflict, you will see it here. Be careful at this point and make a note of everything you do in case you make things worse. The way to resolve a hardware conflict is to uncheck the Use Automatic Settings box and hit the Change Settings button. You are searching for a setting that will display a No Conflicts message. Another useful way to resolve video problems is to go to * Start-Settings-Control Panel-System-Performance-Graphics Here you should move the Hardware Acceleration slider to the left. As ever, the most common cause of problems relating to graphics cards is old or faulty drivers (a driver is a small piece of software used by a computer to communicate with a device). Look up your video card’s manufacturer on the internet and search for the most recent drivers for it.
6. VIRUSES
Often the first sign of a virus infection is instability. Some viruses erase the boot sector of a hard drive, making it impossible to start. This is why it is a good idea to create a Windows start-up disk. Go to * Start-Settings-Control Panel-Add/Remove Programs Here, look for the Start Up Disk tab. Virus protection requires constant vigilance. A virus scanner requires a list of virus signatures in order to be able to identify viruses. These signatures are stored in a DAT file. DAT files should be updated weekly from the website of your antivirus software manufacturer. An excellent antivirus programme is McAfee Virus Scan by Network Associates ( www.nai.com). Another is Norton Antivirus 2000, made by Symantec ( www.symantec.com).
7. PRINTERS
The action of sending a document to print creates a bigger file, often called a postscript file. Printers have only a small amount of memory, called a buffer. This can be easily overloaded. Printing a document also uses a considerable amount of CPU power. This will also slow down the computer’s performance. If the printer is trying to print unusual characters, these might not be recognized, and can crash the computer. Sometimes printers will not recover from a crash because of confusion in the buffer. A good way to clear the buffer is to unplug the printer for ten seconds. Booting up from a powerless state, also called a cold boot, will restore the printer’s default settings and you may be able to carry on.
8. SOFTWARE’S
A common cause of computer crash is faulty or badly-installed software. Often the problem can be cured by uninstalling the software and then reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an application from your system properly. This will also remove references to the programme in the System Registry and leaves the way clear for a completely fresh copy. The System Registry can be corrupted by old references to obsolete software that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean up the System Registry and remove obsolete entries. It works on Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME), NT4 and Windows 2000. Read the instructions and use it carefully so you don’t do permanent damage to the Registry. If the Registry is damaged you will have to reinstall your operating system. Reg Cleaner can be obtained from www.jv16.org Often a Windows problem can be resolved by entering Safe Mode. This can be done during start-up. When you see the message “Starting Windows” press F4. This should take you into Safe Mode. Safe Mode loads a minimum of drivers. It allows you to find and fix problems that prevent Windows from loading properly. Sometimes installing Windows is difficult because of unsuitable BIOS settings. If you keep getting SUWIN error messages (Windows setup) during the Windows installation, then try entering the BIOS and disabling the CPU internal cache. Try to disable the Level 2 (L2) cache if that doesn’t work. Remember to restore all the BIOS settings back to their former settings following installation.
9. OVERHEATING
Central processing units (CPUs) are usually equipped with fans to keep them cool. If the fan fails or if the CPU gets old it may start to overheat and generate a particular kind of error called a kernel error. This is a common problem in chips that have been over clocked to operate at higher speeds than they are supposed to. One remedy is to get a bigger better fan and install it on top of the CPU. Specialist cooling fans/heat sinks are available from www.computernerd.com or www.coolit.com CPU problems can often be fixed by disabling the CPU internal cache in the BIOS. This will make the machine run more slowly, but it should also be more stable.
10. POWER SUPPLY PROBLEMS
With all the new construction going on around the country the steady supply of electricity has become disrupted. A power surge or spike can crash a computer as easily as a power cut. If this has become a nuisance for you then consider buying a uninterrupted power supply (UPS). This will give you a clean power supply when there is electricity, and it will give you a few minutes to perform a controlled shutdown in case of a power cut. It is a good investment if your data are critical, because a power cut will cause any unsaved data to be lost.

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Please Answers the following Questions

Q1: What is the default Port of Jboss Server ?
(a) 8080
(b) 80
(c) 443
(d) None of them
Q2: IP 172.168.100.10 belongs to which Class ?
(a) Class A
(b) Class B
(c) Class C
(d) Class D
Q3: What is the default Port of Squid Proxy Server ?
(a) 80
(b) 8080
(c) 81
(d) 3128
Q4: What does NTP Stands for ?
(a) Network Time Protocol
(b) Network Transport Protocol
(c) Name Time Protocol
(d) None of Them
Q5: What is EXIM ?
(a) Web Server
(b) Mail Server
(c) Chat Server
(d) None Of them

JAVA(Servlet) Interview Questions

1.What is the difference between apache webserver, java webserver and tomcat server?
Apache is an HTTP server written in C that can be compiled and run on many platforms. Java WebServer is an HTTP server from Sun written in Java that also supports Servlets and JSP. Tomcat is an open-source HTTP server from the Apache Foundation, written in Java, that supports Servlets and JSP. It can also be used as a "plug-in" to native-code HTTP servers, such as Apache Web Server and IIS, to provide support for Servlets (while still serving normal HTTP requests from the primary, native-code web server).
Tomcat behind Apache with a connector .apache web server is a webserver where as tomcat is a servlet container.
Apache is what your browser connects to, tomcat is what apache connects to to ask for servlets to be processed. However, tomcat now includes a webserver so you can cut out the middle man. You might not want to do this on a large production environment.
Apache is a general-purpose http server, which supports a number of advanced options that Tomcat doesn't. Although Tomcat can be used as a general purpose http server, you can also set up Apache and Tomcat to work together with Apache serving static content and forwarding the requests for dynamic content to Tomcat. This is generally prefered when using tomcat because the overhead from serving static content directly from Apache is much lower than having Tomcat handle all of the requests
2.What is the difference between Web Site and Web Browser?
Web site is the client base system( or said to collection of web pages contains information interact with user or client) use to interact over the network Web Browser is the applicaction or tool use to run web pages or web site.
3.Difference between web server and application server?
Webserver:
A Web server handles the HTTP protocol. When the Web server receives an HTTP request, it responds with an HTTP response, such as sending back an HTML page. To process a request, a Web server may respond with a static HTML page or image, send a redirect, or delegate the dynamic response generation to some other program such as CGI scripts, JSPs (JavaServer Pages), servlets, ASPs (Active Server Pages), server-side JavaScripts, or some other server-side technology. Whatever their purpose, such server-side programs generate a response, most often in HTML, for viewing in a Web browser. Application Server:
As for the application server, according to our definition, an application server exposes business logic to client applications through various protocols, possibly including HTTP. While a Web server mainly deals with sending HTML for display in a Web browser, an application server provides access to business logic for use by client application programs. The application program can use this logic just as it would call a method on an object

II_MID_MAD_IV-IT-2013-14 Questions & Objectives

Questions
1. what is Transaction? Explain about Transaction Processing?
2. What is ResultSet? Explain in detail about ScollableResultSet?
3. Explain about the Session Management in J2ME?
4. What is Record Enumeration? Write a J2ME Program for reading and writing record of a single Data type into a Record Enumeration?
5. Explain about the overview of the JDBC Process?
6. Explain about the Hyper Text Transfer Protocol in J2ME?
7. Explain about the updating and deleting data from a Table ?
Objectives
1. A J2ME application can access metadata by using DatabaseMetaData interface
2. To remove a Table , DROP command used
3. getString() and getXXX()method using these methods we can get a specific column values
4. SUM,AVG,MAX and MIN are built-in functions to calculate the values in a table
5. Cable ,Wireless and Hard-Wired technology is used to transmit and receive data over a network
6. J2ME applications must store information in Non-Volatile memory using the Record Store Management
7. In J2ME,A Record Store is a collection of records organized as rows and columns
8. Records are consists of mixed data types such as String Boolean Integer
9. An Enumeration provides a way to traverse data elements
10. return values of the CompareTo ()method are EQUIVALENT,FOLLOW, PRECEDES
11. RecordListener interface is used to change the record store
12. the full form of JNDI is Java Naming Directory Interface
13. The connection to the database is established by using getConnection( ) method
14. IN,OUT , INOUT parameters are used by CallableStatement
15. addBatch() by using this method To combine multiple statements into single transaction
16. The URI consists of three components
17. The FTP is used to write information to file from a MIDlet
18. GET method is used to send requested data as a part of the URL
19. Non-persistence is the disadvantage of HTTP communication
20. Generic Connection Framework interfaces are available in javax.microedition.io package

How to install windows xp step by step

How to install windows xp step by step
Here is a basic guide to install windows xp ( for beginners ) . Before proceeding with the installation, please make sure you have a compatible hardware resource , Windows xp installation CD/DVD and Windows xp Key .
let’s start ..
Put the Windows xp installation CD / DVD into the CD / DVD Drive .
» press F12 or Delete Key( Depends upon your motherboard / Brand ) . Select CD-ROM Drive
[or]
» You can change first boot device to CD-ROM in Bios Setup ( Mostly F2 key for Bios setup ).
Installation will start now. ( Follow the Screenshots and steps ).
windowsxp-step-1
Step 1 » The Setup starts now ( you will see the screen like the picture 1 )
Step 2 » Inspecting something ( secret.. , Do not press anything until you see the next step screen )
Step 3 » Press Enter for new installation
Step 4 » Press F8 to Agree terms and conditions ( Don’t try to read , it’s huge )
Step 5 » it will show the unpartitioned space of your Hard disk ( picture shows the space in MB ie,40GB ) . press C to create a partition ( press Enter if you want to use whole hard drive as a single partition ) .
Step 6 » Now you need to decide how much space you need for OS drive (ie, C drive) . For WindowsXP 25 GB is enough , just type 25600 (25 GB = 25600 MB) and press Enter .
Step 7 » Now it will show the allocated space for OS drive and remaining space left on the hard disk . just press Enter ( we can create more Drives later ).
Step 8 » Now choose the type of Format . just choose NTFS ( Quick ) first option and press Enter ( Beginners , no questions ).
Step 9 » Setup is formatting the OS drive. ( No need to do anything until step 13 )
Step 10 » Setup will copy some files for installation .
Step 11 » System will get restarted after coping files .
Step 12 » Setup will install something in the background ( hey wait , not exactly in the back. just relax).
Step 13 » Just leave as it is and press Next. * Here it may ask windows xp product key . just type a valid key and press Next (After validating your key it will goto next step).
Step 14 » Type your name and organization name . press Next .
Step 15 » Type name of your computer and type administrator password or leave as it is and press Next (We can change later) .
Step 16 » Select your Time zone and press Next .
Step 17 » Again it will install something in the background .
Step 18 » Now you need to setup network connection. Choose typical and press Next ( no one wants to assign IP , if you need you can choose custom and do it on your own ) .
Step 19 » Leave as it is ( I don’t want confuse you at this stage ) . please press Enter .
Step 20 » It will install , register and save etc….. ( No need to do anything )
Step 21 » System will get restarted. you will see the screen like Picture 21.
Step 22 » Just press OK . it will automatically adjust your screen resolutions.
Step 23 » Just press OK to adjust monitor settings automatically.
Step 24 » Now you will see a welcome note from windows. press Next .
Step 25 » choose first option to update your Windows automatically.press Next .
Step 26 » In this step it will check for the internet connectivity . press skip (if you don’t want to wait ) or press next after checking .
Step 27 » choose whatever you want( we can change it later ) . press skip or next ( which one is visible ).
Step 28 » choose second option and press Next .
Step 29 » just type the user name for login and press Next.
Step 30 » At last , you made it . press Finish .
Step 31 » .

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Java Interview Questions

1.What is the difference between apache webserver, java webserver and tomcat server?
Apache is an HTTP server written in C that can be compiled and run on many platforms. Java WebServer is an HTTP server from Sun written in Java that also supports Servlets and JSP. Tomcat is an open-source HTTP server from the Apache Foundation, written in Java, that supports Servlets and JSP. It can also be used as a "plug-in" to native-code HTTP servers, such as Apache Web Server and IIS, to provide support for Servlets (while still serving normal HTTP requests from the primary, native-code web server). Tomcat behind Apache with a connector .apache web server is a webserver where as tomcat is a servlet container. Apache is what your browser connects to, tomcat is what apache connects to to ask for servlets to be processed. However, tomcat now includes a webserver so you can cut out the middle man. You might not want to do this on a large production environment. Apache is a general-purpose http server, which supports a number of advanced options that Tomcat doesn't. Although Tomcat can be used as a general purpose http server, you can also set up Apache and Tomcat to work together with Apache serving static content and forwarding the requests for dynamic content to Tomcat. This is generally prefered when using tomcat because the overhead from serving static content directly from Apache is much lower than having Tomcat handle all of the requests
2.What is the difference between Web Site and Web Browser?
Web site is the client base system( or said to collection of web pages contains information interact with user or client) use to interact over the network Web Browser is the applicaction or tool use to run web pages or web site.
3.Difference between web server and application server?
Webserver: A Web server handles the HTTP protocol. When the Web server receives an HTTP request, it responds with an HTTP response, such as sending back an HTML page. To process a request, a Web server may respond with a static HTML page or image, send a redirect, or delegate the dynamic response generation to some other program such as CGI scripts, JSPs (JavaServer Pages), servlets, ASPs (Active Server Pages), server-side JavaScripts, or some other server-side technology. Whatever their purpose, such server-side programs generate a response, most often in HTML, for viewing in a Web browser. Application Server: As for the application server, according to our definition, an application server exposes business logic to client applications through various protocols, possibly including HTTP. While a Web server mainly deals with sending HTML for display in a Web browser, an application server provides access to business logic for use by client application programs. The application program can use this logic just as it would call a method on an object

Operating System Question Paper

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Source code for Rotating images in SCD(Small Computing Devices) Using J2ME

Note:-Put all images in res Folder under your Main Project. import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class imageSlideShow extends MIDlet implements CommandListener { public Form slide1; public Form slide2; public Form slide3; public Command Exit; public Display display; public Image image1; public Image image2; public Image image3; public ImageItem imageitem1; public ImageItem imageitem2; public ImageItem imageitem3; public imageSlideShow() { display=Display.getDisplay(this); try { image1=Image.createImage("/1.png"); image2=Image.createImage("/2.png"); image3=Image.createImage("/3.png"); imageitem1=new ImageItem(null,image1,ImageItem.LAYOUT_CENTER,"image1"); imageitem2=new ImageItem(null,image2,ImageItem.LAYOUT_CENTER,"image2"); imageitem3=new ImageItem(null,image3,ImageItem.LAYOUT_CENTER,"image3"); } catch(Exception ex) { } Exit=new Command("Exit",Command.EXIT,1); slide1=new Form("Slide1"); slide1.append(imageitem1); slide1.addCommand(Exit); slide2=new Form("Slide2"); slide2.append(imageitem2); slide2.addCommand(Exit); slide3=new Form("Slide3"); slide3.append(imageitem3); slide3.addCommand(Exit); slide1.setCommandListener(this); slide2.setCommandListener(this); slide3.setCommandListener(this); } public void startApp() { Thread runner = new Thread(new ThreadRunner(display,slide1,slide2,slide3)); runner.start(); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command command,Displayable displayable) { if(displayable==slide1) { if(command==Exit) notifyDestroyed(); } else if(displayable==slide2) { if(command==Exit) notifyDestroyed(); } else if(displayable==slide3) { if(command==Exit) notifyDestroyed(); } } } class ThreadRunner implements Runnable { Display display; public int c=0; public Form slide1; public Form slide2; public Form slide3; public ThreadRunner(Display display,Form slide1,Form slide2,Form slide3) { this.display = display; this.slide1=slide1; this.slide2=slide2; this.slide3=slide3; } public void run() { while(true) { c++; if(c==1) display.setCurrent(slide1); else if(c==2) display.setCurrent(slide2); else if(c==3) display.setCurrent(slide3); else if(c==4) c=0; try { Thread.sleep(1500); } catch(Exception ex) { } } } }