The correct answer is "Wireless Transport Layer Security Protocol (WTLS)". SSL performs
security functions in TCP/IP.
The other answers refer to protocols in the WAP protocol stack also, but
their primary functions are not security.

This is a valid Class A reserved address. For Class A, the reserved addresses are
10.0.0.0
- 10.255.255.255.
The following answers are incorrect:
11.0.42.5
Is incorrect because it is not a Class A reserved address.
12.0.42.5
Is incorrect because it is not a Class A reserved address.
13.0.42.5
Is incorrect because it is not a Class A reserved address.
The private IP address ranges are defined within RFC 1918: RFC 1918 private ip address range
References:
3Com http://www.3com.com/other/pdfs/infra/corpinfo/en_US/501302.pdf AIOv3 Telecommunications and Networking Security (page 438)

The correct answer is "Discretionary access control". Identity-based access control is a type of discretionary access control that grants access privileges based on the user's identity. A related type of discretionary access control is user-directed access control that gives the user, with certain limitations, the right to alter the access control to certain objects.

Dictionaries may be used in a cracking program to determine passwords. A short dictionary attack involves trying a list of hundreds or thousands of words that are frequently chosen as passwords against several systems. Although most systems resist such attacks, some do not. In one case, one system in five yielded to a particular dictionary attack.