Module 3 Quiz – Network Security

1. The IT department is reporting that a company web server is receiving an abnormally high number of web page requests from different locations simultaneously. Which type of security attack is occurring?

• spyware

• • phishing

• DDoS

• • social engineering

• • adware

2. What causes a buffer overflow?

• • downloading and installing too many software updates at one time

• attempting to write more data to a memory location than that location can hold

• • sending too much information to two or more interfaces of the same device, thereby causing dropped packets

• • sending repeated connections such as Telnet to a particular device, thus denying other data sources

• • launching a security countermeasure to mitigate a Trojan horse

3. Which objective of secure communications is achieved by encrypting data?

• • authentication

• confidentiality

• • integrity

• • availability

4. What type of malware has the primary objective of spreading across the network?

• • virus

• • botnet

• • Trojan horse

• • worm

5. Which algorithm can ensure data confidentiality?

• • MD5

• • PKI

• • AES

• • RSA

6. What three items are components of the CIA triad? (Choose three.)

• scalibility

• access

• confidentiality

• integrity

• availability

7. Which cyber attack involves a coordinated attack from a botnet of zombie computers?

• • address spoofing

• • ICMP redirect

• • DDoS

• • MITM

8. What specialized network device is responsible for enforcing access control policies between networks?

• firewall

• switch

• IDS

• bridge

9. To which category of security attacks does man-in-the-middle belong?

• • DoS

• access

• • reconnaissance

• • social engineering

10. What is the role of an IPS?

• • to detect patterns of malicious traffic by the use of signature files

• • to enforce access control policies based on packet content

• • to filter traffic based on defined rules and connection context

• • to filter traffic based on Layer 7 information