QUESTION: 73

Jake works as a system administrator at Acme Corp. Jason, an accountant of the firm befriends him at the canteen and tags along with him on the pretext of appraising him about potential tax benefits. Jason waits for Jake to swipe his access card and follows him through the open door into the secure systems area. How would you describe Jason's behavior within a security context?

Smooth Talking
Swipe Gating
Tailgating
Trailing

Answer(s): C

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QUESTION: 74

While performing a ping sweep of a local subnet you receive an ICMP reply of Code 3/Type 13 for all the pings you have sent out.
What is the most likely cause of this?

The firewall is dropping the packets
An in-line IDS is dropping the packets
A router is blocking ICMP
The host does not respond to ICMP packets

Answer(s): C

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QUESTION: 75

Consider the following code:
URL:http://www.certified.com/search.pl?
text=<script>alert(document.cookie)</script>
If an attacker can trick a victim user to click a link like this, and the Web application does not validate input, then the victim's browser will pop up an alert showing the users current set of cookies. An attacker can do much more damage, including stealing passwords, resetting your home page, or redirecting the user to another Web site.
What is the countermeasure against XSS scripting?

Create an IP access list and restrict connections based on port number
Replace "<" and ">" characters with "& l t;" and "& g t;" using server scripts
Disable Javascript in IE and Firefox browsers
Connect to the server using HTTPS protocol instead of HTTP

Answer(s): B

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QUESTION: 76

Samuel is the network administrator of DataX Communications, Inc. He is trying to configure his firewall to block password brute force attempts on his network. He enables blocking the intruder's IP address for a period of 24 hours' time after more than three unsuccessful attempts. He is confident that this rule will secure his network from hackers on the Internet. But he still receives hundreds of thousands brute-force attempts generated from various IP addresses around the world. After some investigation he realizes that the intruders are using a proxy somewhere else on the Internet which has been scripted to enable the random usage of various proxies on each request so as not to get caught by the firewall rule. Later he adds another rule to his firewall and enables small sleep on the password attempt so that if the password is incorrect, it would take 45 seconds to return to the user to begin another attempt. Since an intruder may use multiple machines to brute force the password, he also throttles the number of connections that will be prepared to accept from a particular IP address. This action will slow the intruder's attempts. Samuel wants to completely block hackers brute force attempts on his network.
What are the alternatives to defending against possible brute- force password attacks on his site?

Enforce a password policy and use account lockouts after three wrong logon attempts even though this might lock out legit users
Enable the IDS to monitor the intrusion attempts and alert you by e-mail about the IP address of the intruder so that you can block them at the
Firewall manually
Enforce complex password policy on your network so that passwords are more difficult to brute force
You cannot completely block the intruders attempt if they constantly switch proxies

Answer(s): D

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