Question 1

Which of the following attacks tries to associate an incorrect mac address with a known IP address?

Accepted Answer

ARP poisoning

Question 2

ARP spoofing/poisoning associates the attacker's MAC address with the IP address of

Accepted Answer

victim devices.

Question 3

When computers send an ARP request to get the MAC address of a known IP address, the attacker's system responds with

Accepted Answer

its MAC address.

Question 4

MAC flooding

Accepted Answer

overloads the switch's MAC forwarding table to make the switch function like a hub. The attacker floods the switch with packets, each containing difference source MAC addresses. The flood of packets fills up the forwarding table and consumes so much of the memory in the switch that it causes the switch to enter a state called failopen mode, in which all incoming packets are broadcast out all ports (as with a hub) instead of just to the correct ports, as per normal operation.

Question 5

A null session is

Accepted Answer

the ability to log on using a blank username and password.

Question 6

In a hijacking attack

Accepted Answer

an attacker steals an open session, inserting himself into the session in place of the original client.

Question 7

Which of the following best describes the ping of death exploit?

Accepted Answer

An ICMP packet larger than 65536 bytes

Question 8

A ping of death exploit uses

Accepted Answer

an ICMP packet that is larger than 65,536 bytes.

Question 9

A teardrop attack uses

Accepted Answer

partial IP packets iwth overlapping sequencing numbers.

Question 10

A smurf attack

Accepted Answer

sends multiple spoofed ICMP packets to the victim.

Question 11

The ability to re-direct echo responses is a feature of

Accepted Answer

ICMP that is often involved in malicious attacks.

Question 12

Which exploit seeks to maliciously re-associate the IP address of a legitimate network host with the MAC address of the attackers computer?

Accepted Answer

ARP poisoning

Question 13

ARP spoofing uses spoofed ARP messages to associate a

Accepted Answer

different MAC address with an IP address.

Question 14

ARP spoofing can be used to perform

Accepted Answer

a man-in-the-middle attack.

Question 15

IP spoofing changes the

Accepted Answer

IP address information within a packet.

Question 16

As the victim of a Smurf attack, what protection measure is the most effective during the attack?

Accepted Answer

Communicating with your upstream provider

Question 17

The most effective protection measure the victim of a Smurf attack can perform during an attack is to

Accepted Answer

communicate with upstream providers.

Question 18

You have just purchased a new network device and are getting ready to connect it to your network. Which of the following should you do to increase its security? (2)

Accepted Answer

Change default account passwords / Apply all patches and updates

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