GSNA Exam Dumps : GIAC Systems and Network Auditor

In the given rule set, 'Input chain' defines that the rule is for the incoming traffic, i.e., traffic coming from the intranet to the Internet. Port 25 is being allowed for SNMP traffic and port 443 for the HTTPS traffic. Deny all is being used after allowing port 25 and 443; hence, all the other traffic will be denied. Answer: B is incorrect. Deny all is executed first; hence, all the traffic will be denied including port 25 and 443. Answer: A, D are incorrect. These rule sets are used for outgoing traffic, i.e., traffic going from the intranet to the Internet as the 'Output chain' rule is being used.

Data integrity ensures that information has not been modified, altered, or destroyed by a third party while it is in transit. Data integrity ensures that the data received is same as the data that was sent. Moreover, no one can tamper with the data during transmission from source to destination.

It also ensures that a hacker cannot alter the contents of an HTTP message while it is in transit from the container to the client. This will be accomplished through the use of HTTPS. The HTTPS stands for Hypertext Transfer Protocol over Secure Socket Layer. The HTTPS encrypts and decrypts the page requests and page information between the client browser and the Web server using a Secure Socket Layer. Answer: D is incorrect. This answer option describes confidentiality. Answer: B is incorrect. This answer option also describes confidentiality.

A named block is a PL/SQL block that Oracle stores in the database and can be called by name from any application. A named block is also known as a stored procedure. Named blocks can be called from any PL/SQL block. It has a declaration section, which is known as a header. The header may include the name of a block, type of the block, and parameter. The name and list of formal parameters are known as the signature of a subroutine. Once a named PL/SQL block is compiled, it gets permanently stored as p-code after compilation in the shared pool of the system global area. Therefore, the named block gets compiled only once. An anonymous block is a PL/SQL block that appears in a user's application and is neither named nor stored in the database. This block does not allow any mode of parameter. Anonymous block programs are effective in some situations. They are basically used when building scripts to seed data or perform one-time processing activities. They are also used when a user wants to nest activity in another PL/SQL block's execution section. Anonymous blocks are compiled each time they are executed.