46. to create a user account, keep in mind that the username is at most ____ characters long.
a. 6
b. 8
c. 12
d. 18

47. what file contains the default environment variables when using the bash shell?
a. ~/.profile
b. /bash
c. /etc/profile
d. ~/bash

48. all groups are defined in the /etc/group file. each entry contains four fields in the following
order.
a. groupname, password, gid, member list
b. gid, groupname, password, member list
c. groupname, gid, password, member list
d. gid, member list, groupname, password

49. there are seven fields in the /etc/passwd file. which of the following lists all the fields in the
correct order?
a. username, uid, password, gid, home directory, command, comment
b. username, password, uid, gid, comment, home directory, command
c. uid, username, gid, home directory, password, comment, command
d. username, password, uid, group name, gid, home directory, comment

50. what is the usual mode for the /tmp directory?
a. 0777
b. 0755
c. 7777
d. 1777
e. 0222

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