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ECCouncil Updated EC0-350 Exam Questions and Answers by hamzah

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ECCouncil EC0-350 Exam Overview :

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:

A.

Unique SQL Injection

B.

Blind SQL Injection

C.

Generic SQL Injection

D.

Double SQL Injection

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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:

A.

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

B.

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

C.

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

D.

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:

A.

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.

B.

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

C.

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

D.

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

E.

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

Discussion
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

How would you prevent such type of attacks?

Options:

A.

It is impossible to block these attacks

B.

Hire the people through third-party job agencies who will vet them for you

C.

Conduct thorough background checks before you engage them

D.

Investigate their social networking profiles

Discussion
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