Eccouncil pass4future certified Ethical Hacker Ec0-350 New Questions by Hamzah q527 vce pdf

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Exam Name:	Ethical Hacking and Countermeasures V8
Exam Code:	EC0-350 Dumps
Vendor:	ECCouncil	Certification:	Certified Ethical Hacker
Questions:	878 Q&A's	Shared By:	hamzah

Question 88

This attack technique is used when a Web application is vulnerable to an SQL Injection but the results of the Injection are not visible to the attacker.

Options:

Unique SQL Injection

Blind SQL Injection

Generic SQL Injection

Double SQL Injection

Discussion

Question 89

Stephanie works as senior security analyst for a manufacturing company in Detroit. Stephanie manages network security throughout the organization. Her colleague Jason told her in confidence that he was able to see confidential corporate information posted on the external website http://www.jeansclothesman.com. He tries random URLs on the company 's website and finds confidential information leaked over the web. Jason says this happened about a month ago. Stephanie visits the said URLs, but she finds nothing. She is very concerned about this, since someone should be held accountable if there was sensitive information posted on the website.

Where can Stephanie go to see past versions and pages of a website?

Options:

She should go to the web page Samspade.org to see web pages that might no longer be on the website

If Stephanie navigates to Search.com; she will see old versions of the company website

Stephanie can go to Archive.org to see past versions of the company website

AddressPast.com would have any web pages that are no longer hosted on the company's website

Discussion

Question 90

The SYN flood attack sends TCP connections requests faster than a machine can process them.

Attacker creates a random source address for each packet
SYN flag set in each packet is a request to open a new connection to the server from the spoofed IP address
Victim responds to spoofed IP address, then waits for confirmation that never arrives (timeout wait is about 3 minutes)
Victim's connection table fills up waiting for replies and ignores new connections
Legitimate users are ignored and will not be able to access the server

How do you protect your network against SYN Flood attacks?

Options:

SYN cookies. Instead of allocating a record, send a SYN-ACK with a carefully constructed sequence number generated as a hash of the clients IP address, port number, and other information. When the client responds with a normal ACK, that special sequence number will be included, which the server then verifies. Thus, the server first allocates memory on the third packet of the handshake, not the first.

RST cookies - The server sends a wrong SYN/ACK back to the client. The client should then generate a RST packet telling the server that something is wrong. At this point, the server knows the client is valid and will now accept incoming connections from that client normally

Check the incoming packet's IP address with the SPAM database on the Internet and enable the filter using ACLs at the Firewall

Stack Tweaking. TCP stacks can be tweaked in order to reduce the effect of SYN floods. Reduce the timeout before a stack frees up the memory allocated for a connection

Micro Blocks. Instead of allocating a complete connection, simply allocate a micro record of 16-bytes for the incoming SYN object

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Question 91

If a competitor wants to cause damage to your organization, steal critical secrets, or put you out of business, they just have to find a job opening, prepare someone to pass the interview, have that person hired, and they will be in the organization.

Questions 91