Chapter 16

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

• security center

• port scanner

• antimalware

• antivirus

• firewall

Which command blocks 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 users

• 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 benefit does SSH offer over Telnet for remotely managing a router?

• encryption

• TCP usage

• authorization

• connections via multiple vty lines

What is one of the most effective security tools available for protecting users from external threats?

• firewall

• router that run AAA services

• path server

• password encryption

Which type of network threat is intended to prevent authorized users from accessing resources?

• DoS attack

• access attack

• reconnaissance attack

• trust exploitation

Which three services are provided by the AAA framework? (Choose three.)

• automation

• availability

• accounting

• authorization

• authentication

Which malicious code attack is self-contained and tries to exploit a specific vulnerability in a system?

• virus

• worm

• Trojan horse

• maintenance

Some routers and switches in a wiring closet malfunctioned after an air conditioning unit failed. What type of threat does this situation describe?

• configuration

• environmental

• electrical

• maintenance