CEH-001 Free Practice Test

- (Topic 7)
Which of the following algorithms can be used to guarantee the integrity of messages being sent, in transit, or stored? (Choose the best answer)

1. A. symmetric algorithms
2. B. asymmetric algorithms
3. C. hashing algorithms
4. D. integrity algorithms

Correct Answer: C
In cryptography, a cryptographic hash function is a hash function with certain additional security properties to make it suitable for use as a primitive in various information security applications, such as authentication and message integrity. A hash function takes a long string (or \'message\') of any length as input and produces a fixed length string as output, sometimes termed a message digest or a digital fingerprint.

- (Topic 8)
To scan a host downstream from a security gateway, Firewalking:

1. A. Sends a UDP-based packet that it knows will be blocked by the firewall to determine how specifically the firewall responds to such packets
2. B. Uses the TTL function to send packets with a TTL value set to expire one hop past the identified security gateway
3. C. Sends an ICMP \'\'administratively prohibited\'\' packet to determine if the gateway will drop the packet without comment.
4. D. Assesses the security rules that relate to the target system before it sends packets to any hops on the route to the gateway

Correct Answer: B
Firewalking uses a traceroute-like IP packet analysis to determine whether or not a particular packet can pass from the attacker’s host to a destination host through a packet-filtering device. This technique can be used to map ‘open’ or ‘pass through’ ports on a gateway. More over, it can determine whether packets with various control information can pass through a given gateway.

- (Topic 8)
Melissa is a virus that attacks Microsoft Windows platforms. To which category does this virus belong?

1. A. Polymorphic
2. B. Boot Sector infector
3. C. System
4. D. Macro

Correct Answer: D
The Melissa macro virus propagates in the form of an email message containing an infected Word document as an attachment.

- (Topic 3)
What is the main disadvantage of the scripting languages as opposed to compiled programming languages?

1. A. Scripting languages are hard to learn.
2. B. Scripting languages are not object-oriented.
3. C. Scripting languages cannot be used to create graphical user interfaces.
4. D. Scripting languages are slower because they require an interpreter to run the code.

Correct Answer: D

- (Topic 3)
Which of the following statements are true regarding N-tier architecture? (Choose two.)

1. A. Each layer must be able to exist on a physically independent system.
2. B. The N-tier architecture must have at least one logical layer.
3. C. Each layer should exchange information only with the layers above and below it.
4. D. When a layer is changed or updated, the other layers must also be recompiled or modified.

Correct Answer: AC