CREST Practitioner Security Analyst (CPSA) Practice

In the context of Linux file permissions, what represents the permissions for the group?

1. rwx

2. drwx

3. rwx

4. ---

The correct answer is: rwx

In Linux file permissions, the representation includes three sets of characters that define the permissions for the owner, the group, and others. Each set consists of three characters, which can be 'r' for read, 'w' for write, and 'x' for execute. When evaluating the choices where the permissions for the group are represented, the notation commonly appears in the context of a listing produced by the `ls -l` command. In such a listing, the first character denotes the file type, and the subsequent characters are grouped into the three categories: the first set is for the owner, the second set is for the group, and the third set is for others. In this instance, a permission representation such as 'rwx' indicates that the group has read, write, and execute permissions. This is a standard way to denote that a group has full control over the file, allowing group members to view the file, modify it, and execute it if it is a program. The correct answer is confirmed by the representation, as 'rwx' clearly shows the permissions allocated to the group, meaning that members within that group can carry out all three actions. This clarity in the representation reflects a fundamental understanding of Linux file permission system