3.11.3 Module Quiz – Network Security Concepts

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

What causes a buffer overflow?

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

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

• • launching a security countermeasure to mitigate a Trojan horse

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

Which objective of secure communications is achieved by encrypting data?

• • authentication

• • confidentiality

• • integrity

• • availability

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

• • virus

• • worm

• • botnet

• • Trojan horse

Which algorithm can ensure data confidentiality?

• • MD5

• • AES

• • RSA

• • PKI

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

• 
  

• • integrity

• • availability

• • access

• • confidentiality

• • intervention

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

• • address spoofing

• • ICMP redirect

• • DDoS

• • MITM

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

• • firewall

• • switch

• • bridge

• • IDS

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

• • DoS

• • access

• • reconnaissance

• • social engineering

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