chapter 16 part 3

What does the term vulnerability mean?

a weakness that makes a target susceptible to an attack

What is the purpose of the network security accounting function?

to keep track of the actions of a user

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

worm

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

firewalls

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

reconnaissance attack

A network administrator establishes a connection to a switch via SSH. What characteristic uniquely describes the SSH connection?

remote access to a switch were data is encrypted during the session

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 30 attempts 2 within 30

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

DoS attacks

What is the objective of a network reconnaissance attack?

discovery and mapping of systems

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

encryption

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

environmental

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

firewall

For security reasons a network administrator needs to ensure that local computers cannot ping each other. Which settings can accomplish this task?

firewall settings