Systematic audit and assessment is critical to gauge the success and extent of patch management efforts. After patch deployment, organizations should verify that they have fixed or mitigated vulnerabilities as intended. They can accomplish this by reviewing patch logs to verify whether the recommended patchers were installed properly, conducting follow-up scans, and conducting penetration tests to make sure their systems aren't vulnerable to the exploit code the patch is designed to thwart.

A replay attack refers to the recording and retransmission of packets on the
network. Kerberos uses time stamps, which protect against this type of attack.
Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002,
chapter 8: Cryptography (page 581).

In databases, polyinstantiation is database-related SQL (structured query language) terminology. It allows a relation to contain multiple rows with the same primary key; the multiple instances are distinguished by their security levels. It occurs because of mandatory policy. Depending on the security level established, one record contains sensitive information, and the other one does not, that is, a user will see the record's information depending on his/her level of confidentiality previously dictated by the company's policy.
The following answers are incorrect:
An RDBMS is a DBMS in which data is stored in tables and the relationships among the data are also stored in tables. The data can be accessed or reassembled in many different ways without having to change the table forms.
Polymorphism based on the Greek roots "poly" and "morph," meaning many and forms, respectively): allows the ability to overload operators, performing different methods depending on the context of the input message.
It is not possible
The following reference(s) were/was used to create this question:
http://en.wikipedia.org/wiki/Polyinstantiation
https://en.wikipedia.org/wiki/Relational_database_management_system
https://en.wikipedia.org/wiki/Polymorphism_%28computer_science%29
http://my.safaribooksonline.com/book/certification/cissp/9781597495639

The best option for low maintenance and ease of deployment to enable student access to university resources from their homes is to use Secure Sockets Layer (SSL) VPN technology. SSL VPN is a type of virtual private network that uses the SSL protocol to provide secure and remote access to the network resources over the internet. SSL VPN does not require the installation or configuration of any special client software or hardware on the student's device, as it can use the web browser as the client interface. SSL VPN can also support various types of devices, operating systems, and applications, and can provide granular access control and encryption for the network traffic. Providing students with Internet Protocol Security (IPSec) VPN client software, using Secure Shell (SSH) with public/private keys, and requiring students to purchase home router capable of VPN are not the best options for low maintenance and ease of deployment, as they involve more complexity, cost, and compatibility issues for the students and the university. References: CISSP All-in-One Exam Guide, Eighth Edition, Chapter 4, Communication and Network Security, page 507. Official (ISC)2 CISSP CBK Reference, Fifth Edition, Chapter 4, Communication and Network Security, page 523.