Technology Questions

SQL*plus allows SQL and PL/SQL scripts to interactively run in command line.

It allows three kinds of commands to run; SQL, PL/SQL and SQL * Plus commands. It’s most commonly used by DBA’s to interact with the oracle database.

- Divide the data into sections

- Add the sections together using 1's complement arithmetic

- Take the complement of the final sum, this is the check sum

In networking, the Open Systems Interconnection is commonly called as OSI model. It has a 7 layer architecture for the communication.

In OSI network architecture, the routing is performed by network layer which is layer number 3 with the help of intermediate routers.

We can send 1024 bytes utilizing GET() yet POST() can exchange extensive measure of information and POST is the protected strategy than GET technique .

JAD (Joint Application Development) is a methodology that involves the client or end user in the design and development of an application, through a succession of collaborative workshops called JAD sessions.

The JAD approach, in comparison with the more traditional practice, is thought to lead to faster development times and greater client satisfaction, because the client is involved throughout the development process. In comparison, in the traditional approach to systems development, the developer investigates the system requirements and develops an application, with client input consisting of a series of interviews.

Social engineering is the art of tricking users into performing certain harmful activities or attacks, users must be trained to identify social engineering. Social engineering attacks typically involve some form of psychological manipulation, fooling otherwise unsuspecting users or employees into handing over confidential or sensitive data. Commonly, social engineering involves email or other communication that invokes urgency, fear, or similar emotions in the victim, leading the victim to promptly reveal sensitive information, click a malicious link, or open a malicious file. Because social engineering involves a human element, preventing these attacks can be tricky for enterprises.

The principle distinction amongst sessions and cookies is that sessions are put away on the server, and cookies are put away on the client's PCs in the content record position. Cookies can not hold various variables,But Session can hold numerous variables.We can set expiry for a cookie,The session just stays dynamic the length of the program is open.Users don't have admittance to the information you put away in Session,Since it is put away in the server. Session is mostly utilized for login/logout reason while cookies utilizing for client movement following.