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NEW QUESTION: 1
Why are hardware security features preferred over software security features?
A. They lock in a particular implementation.
B. Firmware has fever software bugs.
C. They permit higher performance.
D. They have a lower meantime to failure.
Answer: C
Explanation:
This is a sort of iffy question. Hardware allows faster performance then software and does not need to utilize an underlying OS to make the security software operate. (An example is PIX firewall vs checkpoint). The meantime to failure answer to me is ok but the hardware that the software security also has a MTFF. A few people looked over this question and had no problem with the answer of B (meantime to failure question) but as I looked into it I have picked D.MTTF is typical the time to failure. "MTFF is the expected typical functional lifetime of the device given a specific operating environment" (- Ed Tittle CISSP Study Guide (sybex) pg 657). This leads me to think that this question says hardware has a SHORTER lifespan then software. Thus I am going to have to go with D (higher performance). This can be because of ASICs. As always uses your best judgment, knowledge and experience on this question. Below are some points of view.
Few things to consider when deploying software based firewall:
Patching OS or firewall software could bring down firewall or open additional holes
OS Expertise vs. firewall expertise (you may need two administrators).
Support contract (One for hardware, one for OS, one for firewall), who do you call?
Administration (One for OS and one for firewall). If your not an expert in both then forget it.
High-availability (Stateful failover) (usually requires additional software and costs a lot of money).
As a result it adds to support costs.
Is software firewalls a bad idea it depends. Every situation is different. -Bob
http://www.securityfocus.com/archive/105/322401/2003-05-22/2003-05-28/2
A software firewall application is designed to be installed onto an existing operating system
running on generic server or desktop hardware. The application may or may not 'harden' the
underlying operating system by replacing core components. Typical host operating systems
include Windows NT, 2000 server or Solaris.
Software firewall applications all suffer from the following key disadvantages:
They run on a generic operating system that may or may not be hardened by the Firewall
installation itself.
A generic operating system is non-specialized and more complex than is necessary to operate the
firewall. This leads to reliability problems and hacking opportunities were peripheral/unnecessary
services are kept running.
Generic operating systems have their own CPU and memory overheads making software based
firewalls slower than their dedicated hardware counterparts.
If the software firewalls uses PC hardware as the host platform, then there may be additional
reliability problems with the hardware itself. Sub-optimal performance of generic hardware also
affects software applications bundled with their own operating systems.
There is no physical or topological separation of the firewalling activity.
A dedicated hardware firewall is a software firewall application and operating system running on
dedicated hardware. This means the hardware used is optimized for the task, perhaps including
digital signal processors (DSPs) and several network interfaces. There may also be special
hardware used to accelerate the encryption/decryption of VPN data. It may be rack mounted for
easy installation into a comms' cabinet.
We recommend dedicated hardware firewalls as they offer several key advantages over software
applications:
Dedicated hardware is typically more reliable.
Hardware firewalls are simpler, hence more secure.
Hardware firewalls are more efficient and offer superior performance, especially in support of
VPNs.
The firewalling activity is physically and topologically distinct.
http://www.zensecurity.co.uk/default.asp?URL=hardware%20software%20firewall

NEW QUESTION: 2
When planning the sizing and capacity for a GVP deployment, which of the following should be considered?
A. In-Front or Behind-the-Switch mode of operation
B. operating system of the web servers
C. expected call volume
D. SNMP tools for monitoring network
Answer: C

NEW QUESTION: 3
A user has unknowingly gone to a fraudulent site. The security analyst notices the following system change on the user's host:
Old `hosts' file:
127.0.0.1 localhost
New `hosts' file:
127.0.0.1 localhost
5.5.5.5 www.comptia.com
Which of the following attacks has taken place?
A. Phishing
B. Spear phishing
C. Vishing
D. Pharming
Answer: D
Explanation:
Explanation/Reference:
Explanation:
We can see in this question that a fraudulent entry has been added to the user's hosts file. This will point the URL: www.comptia.com to 5.5.5.5 instead of the correct IP address.
Similar in nature to e-mail phishing, pharming seeks to obtain personal or private (usually financial related) information through domain spoofing. Rather than being spammed with malicious and mischievous e-mail requests for you to visit spoof Websites which appear legitimate, pharming 'poisons' a DNS server (or hosts file) by infusing false information into the DNS server, resulting in a user's request being redirected elsewhere. Your browser, however will show you are at the correct Website, which makes pharming a bit more serious and more difficult to detect. Phishing attempts to scam people one at a time with an e-mail while pharming allows the scammers to target large groups of people at one time through domain spoofing.