Exam Results - CCNAS Chapter 1 - CCNA Security Implementing Network Security - Version 1.0.0.0.docVIP

1. What are the basic phases of attack that can be used by a virus or worm in sequential order? paralyze, probe, penetrate, persist, and propagate probe, penetrate, persist, propagate, and paralyze penetrate, persist, propagate, paralyze, and probe persist, propagate, paralyze, probe, and penetrate 2. Which two are characteristics of DoS attacks? (Choose two.) They always precede access attacks. They attempt to compromise the availability of a network, host, or application. They are difficult to conduct and are initiated only by very skilled attackers. They are commonly launched with a tool called L0phtCrack. Examples include smurf attacks and ping of death attacks. 3. Users report to the helpdesk that icons usually seen on the menu bar are randomly appearing on their computer screens. What could be a reason that computers are displaying these random graphics? An access attack has occurred. A virus has infected the computers. A DoS attack has been launched against the network. The computers are subject to a reconnaissance attack. 4. What are three types of access attacks? (Choose three.) buffer overflow ping sweep port redirection trust exploitation port scan Internet information query 5. What occurs during a spoofing attack? One device falsifies data to gain access to privileged information. Large amounts of network traffic are sent to a target device to make resources unavailable to intended users. Improperly formatted packets are forwarded to a target device to cause the target system to crash. A program writes data beyond the allocated memory to enable the execution of malicious code. 6. What is a characteristic of a Trojan Horse? A Trojan Horse can be carried in a virus or worm. A proxy Trojan Horse opens port 21 on the target system. An FTP Trojan Horse stops anti-virus programs or firewalls from functioning. A Trojan Horse can be hard to detect because it closes when th