Which component is designed to protect against unauthorized communications to and from a computer?

• • security center

• • port scanner

• • antimalware

• • antivirus

• • firewall

Which command will block login attempts on RouterA for a period of 30 seconds if there are 2 failed login attempts within 10 seconds?

• • RouterA(config)# login block-for 10 attempts 2 within 30

• • RouterA(config)# login block-for 30 attempts 2 within 10

• • RouterA(config)# login block-for 2 attempts 30 within 10

• • RouterA(config)# login block-for 30 attempts 10 within 2

What is the purpose of the network security accounting function?

• • to require users to prove who they are

• • to determine which resources a user can access

• • to keep track of the actions of a user

• • to provide challenge and response questions

What type of attack may involve the use of tools such as nslookup and fping?

• • access attack

• reconnaissance attack

• • denial of service attack

• • worm attack

Which example of malicious code would be classified as a Trojan horse?

• malware that was written to look like a video game

• • malware that requires manual user intervention to spread between systems

• • malware that attaches itself to a legitimate program and spreads to other programs when launched

• • malware that can automatically spread from one system to another by exploiting a vulnerability in the target

What is the difference between a virus and a worm?

• • Viruses self-replicate but worms do not.

• • Worms self-replicate but viruses do not.

• • Worms require a host file but viruses do not.

• • Viruses hide in legitimate programs but worms do not.

Which attack involves a compromise of data that occurs between two end points?

• • denial-of-service

• • man-in-the-middle attack

• • extraction of security parameters

• • username enumeration

Which type of attack involves an adversary attempting to gather information about a network to identify vulnerabilities?

• • reconnaissance

• • DoS

• • dictionary

• • man-in-the-middle

What is the purpose of the network security authentication function?

• to require users to prove who they are

• • to determine which resources a user can access

• • to keep track of the actions of a user

• • to provide challenge and response questions

Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?

• • stateful packet inspection

• • URL filtering

• • application filtering

• • packet filtering