Technology Questions

- Fail-safe approach defines the level that divides the security such that it is safe even in case the system is failed.

- The fail safe approach doesn’t allow an attacker to take the advantage by breaking in the system and crashes out.

- This approach allows the web server to perform the routines even if the system runs out of the memory in case of any attack. 

- The system in attacks doesn’t skip the access to the control check or it doesn’t skip serving any document requested. 

- Fail safe approach can force the web server to run of the memory and have a DoS attack.

Go to file-aid copy option.Enter the from dataset to be copied and to dataset to which you want to copy.go to options. Enter 0 at Initial records to skip field.Then enter 3 at the no of records to skip field and 1 to no of records to select.press enter and PF3.

unlink()-deletes the given file from the file system.
unset() -makes a variable undefined.

- The web pages that are loading slowly might be using heavy scripts or might be getting loaded on an overloaded server. 

- If the content like flash is used then the web page performs really slowly in comparison to the normal pages that get created. 

- If the caching is inactive on the web browsers and the same web page is getting loaded again and again then the performance get degraded.

- Web pages load slowly due to the content on that page as if it is text it loads faster then the site that is made up of large photographs. 

- It takes longer time for a picture to get rendered and the transmission time also remains higher then the text.

• Intelligent Search and Siri- Intelligent Search is an excellent mechanism to learn user habits and act on that information- open apps before we need them, make recommendations on places we might like and guide us through our daily lives to make sure we’re where we need to be at the right time.
  Siri is a personal assistant to the users, able to create contextual reminders and search through photos and videos in new ways. Swiping right from the home screen also brings up a new screen that houses “Siri Suggestions,” putting favorite contacts and apps right on your fingertips, along with nearby restaurant and location information and important news.


• Deeper search capabilities can show results like sports scores, videos, and content from third-party apps, and you can even do simple conversions and calculations using the search tools on your iPhone or iPad.


• Many of the built-in apps have been updated.
  ✓ Notes includes new checklists and sketching features
  ✓ Maps now offers transit directions
  ✓ Mail allows for file attachments
  ✓ Apple Pay is being improved with the addition of store credit cards and loyalty cards
  ✓ Leading “Passbook” to be renamed to “Wallet” in iOS 9.


• San Francisco font, wireless CarPlay support


• An optional iCloud Drive app, built-in two-factor authentication and optional longer passwords for better security.


• Performance improvements

Oracle supports 3 transaction isolation levels: 

- Read committed (default)

- Serializable transactions

- Read only

Basically there are many standards of Wi-Fi in the industry but some popular of them are 802.11a, 802.11b, 802.11g/n. With the support of these Wi-Fi protocols we can communicate/interact among the devices at the speed of 5Ghz to 2.4Ghz dual band communication.

If we have Wi-Fi nic card so firstly we have to install their drivers and after installation if we have Wi-Fi access point then we can see the signal strength in the right corner below just open that and find the access point to connect, if access point is configured with the security, type the key to connect and enjoy the service.

Wi-Fi is technically referred to as the 802.11 protocol. Over time, Wi-Fi has improved, giving rise to different variations of the protocol.

802.11a – This version operates at 54Mbps. It is considered as the favorite wireless LAN protocol for IP telephony.

AWT are heavy-weight componenets. Swings are light-weight components. Hence swing works faster than AWT.