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2. 212-77 QUESTION 1: Which of the following is true of Linux passwords? A. They are changed with the password utility. B. They must be changed once a month. C. They may consist only of lowercase letters and numbers. D. They may be changed by the user who owns an account or by root. Answer: A QUESTION 2: Assume that you have just logged on as a regular user. Which of the following commands allows you to edit the file with user passwords associated with the Shadow Password Suite? A. vi /etc/shadow B. sudo -c "vi /etc/shadow" C. su -c "vi /etc/shadow" D. visu vi /etc/passwd Answer: B QUESTION 3: Under the bash shell which is the most appropriate place to set environment variables that apply to all users? A. /etc/skel B. rc.sysinit C. /etc/profile D. /etc/bashrc E. rc.local Answer: A QUESTION 4: Which of the following measures is the most effective way to prevent attacks through various network services? A. Disable a service in the appropriate /etc/xinetd.d configuration file. B. Use a firewall to drop all requests to unneeded services. C. Block service requests with the appropriate commands in /etc/hosts.deny.

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