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Total 878 questions

Ethical Hacking and Countermeasures V8 Questions and Answers

Question 77

What is a primary advantage a hacker gains by using encryption or programs such as Loki?

Options:

A.

It allows an easy way to gain administrator rights

B.

It is effective against Windows computers

C.

It slows down the effective response of an IDS

D.

IDS systems are unable to decrypt it

E.

Traffic will not be modified in transit

Question 78

Which of the following is NOT a reason 802.11 WEP encryption is vulnerable?

Options:

A.

There is no mutual authentication between wireless clients and access points

B.

Automated tools like AirSnort are available to discover WEP keys

C.

The standard does not provide for centralized key management

D.

The 24 bit Initialization Vector (IV) field is too small

Question 79

Matthew re-injects a captured wireless packet back onto the network. He does this hundreds of times within a second. The packet is correctly encrypted and Matthew assumes it is an ARP request packet. The wireless host responds with a stream of responses, all individually encrypted with different IVs. What is this attack most appropriately called?

Options:

A.

Spoof attack

B.

Replay attack

C.

Injection attack

D.

Rebound attack

Question 80

Take a look at the following attack on a Web Server using obstructed URL:

The request is made up of:

 %2e%2e%2f%2e%2e%2f%2e%2f% = ../../../

 %65%74%63 = etc

 %2f = /

 %70%61%73%73%77%64 = passwd

How would you protect information systems from these attacks?

Options:

A.

Configure Web Server to deny requests involving Unicode characters.

B.

Create rules in IDS to alert on strange Unicode requests.

C.

Use SSL authentication on Web Servers.

D.

Enable Active Scripts Detection at the firewall and routers.

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Total 878 questions