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NEW QUESTION: 1
What is called the act of a user professing an identity to a system, usually in the form of a log-on ID?
A. Authorization
B. Identification
C. Confidentiality
D. Authentication
Answer: B
Explanation:
Identification is the act of a user professing an identity to a system, usually in the form of a log-on ID to the system.
Identification is nothing more than claiming you are somebody. You identify yourself when you speak to someone on the phone that you don't know, and they ask you who they're speaking to. When you say, "I'm Jason.", you've just identified yourself.
In the information security world, this is analogous to entering a username. It's not analogous to entering a password. Entering a password is a method for verifying that you are who you identified yourself as.
NOTE: The word "professing" used above means: "to say that you are, do, or feel something when other people doubt what you say". This is exactly what happen when you provide your identifier (identification), you claim to be someone but the system cannot take your word for it, you must further Authenticate to the system to prove who you claim to be.
The following are incorrect answers:
Authentication: is how one proves that they are who they say they are. When you claim to be Jane Smith by logging into a computer system as "jsmith", it's most likely going to ask you for a password. You've claimed to be that person by entering the name into the username field (that's the identification part), but now you have to prove that you are really that person.
Many systems use a password for this, which is based on "something you know", i.e. a secret between you and the system.
Another form of authentication is presenting something you have, such as a driver's license, an RSA token, or a smart card.
You can also authenticate via something you are. This is the foundation for biometrics.
When you do this, you first identify yourself and then submit a thumb print, a retina scan, or another form of bio-based authentication.
Once you've successfully authenticated, you have now done two things: you've claimed to be someone, and you've proven that you are that person. The only thing that's left is for the system to determine what you're allowed to do.
Authorization: is what takes place after a person has been both identified and authenticated; it's the step determines what a person can then do on the system.
An example in people terms would be someone knocking on your door at night. You say,
"Who is it?", and wait for a response. They say, "It's John." in order to identify themselves.
You ask them to back up into the light so you can see them through the peephole. They do so, and you authenticate them based on what they look like (biometric). At that point you decide they can come inside the house.
If they had said they were someone you didn't want in your house (identification), and you then verified that it was that person (authentication), the authorization phase would not include access to the inside of the house.
Confidentiality: Is one part of the CIA triad. It prevents sensitive information from reaching the wrong people, while making sure that the right people can in fact get it. A good example is a credit card number while shopping online, the merchant needs it to clear the transaction but you do not want your informaiton exposed over the network, you would use a secure link such as SSL, TLS, or some tunneling tool to protect the information from prying eyes between point A and point B. Data encryption is a common method of ensuring confidentiality.
The other parts of the CIA triad are listed below:
Integrity involves maintaining the consistency, accuracy, and trustworthiness of data over its entire life cycle. Data must not be changed in transit, and steps must be taken to ensure that data cannot be altered by unauthorized people (for example, in a breach of confidentiality). In addition, some means must be in place to detect any changes in data that might occur as a result of non-human-caused events such as an electromagnetic pulse
(EMP) or server crash. If an unexpected change occurs, a backup copy must be available to restore the affected data to its correct state.
Availability is best ensured by rigorously maintaining all hardware, performing hardware repairs immediately when needed, providing a certain measure of redundancy and failover, providing adequate communications bandwidth and preventing the occurrence of bottlenecks, implementing emergency backup power systems, keeping current with all necessary system upgrades, and guarding against malicious actions such as denial-of- service (DoS) attacks.
Reference used for this question:
http://whatis.techtarget.com/definition/Confidentiality-integrity-and-availability-CIA
http://www.danielmiessler.com/blog/security-identification-authentication-and-authorization
http://www.merriam-webster.com/dictionary/profess
KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten
Domains of Computer Security, 2001, John Wiley & Sons, Page 36
NEW QUESTION: 2
On which combinations are standard access lists based?
A. destination address and wildcard mask
B. source address and subnet mask
C. destination address and subnet mask
D. source address and wildcard mask
Answer: D
Explanation:
Explanation/Reference:
Explanation:
Standard ACL's only examine the source IP address/mask to determine if a match is made. Extended ACL's examine the source and destination address, as well as port information.
NEW QUESTION: 3
A. Option C
B. Option F
C. Option B
D. Option E
E. Option A
F. Option D
Answer: A,C,D
Explanation:
Source:
http://www.ciscopress.com/articles/article.asp?p=1697887
Standard ACL
1) Able Restrict, deny & filter packets by Host Ip or subnet only.
2) Best Practice is put Std. ACL restriction near from Source Host/Subnet (Interface-In-bound).
3) No Protocol based restriction. (Only HOST IP).
Extended ACL
1) More flexible then Standard ACL.
2) You can filter packets by Host/Subnet as well as Protocol/TCPPort/UDPPort.
3) Best Practice is put restriction near form Destination Host/Subnet. (Interface-Outbound)
NEW QUESTION: 4
Name three key benefits from Predictive Insights?
A. Simplified behavioral learning, heterogeneous environment support and machine learning algorithms
B. Improve user satisfaction, built-in expertise and machine learning algorithms
C. Gain operational insights, simplify IT administration, and fast problem resolution
Answer: A
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