Cisco CCNA Security, chapter 1 Exam.

Questions and answers 100% correct.

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?

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 too

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 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?

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 resounavailable 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.

Cisco CCNA Security, chapter 1 Exam.

Questions and answers 100% correct.

What are the basic phases of attack that can be used by a virus or worm in sequential

paralyze, probe, penetrate, persist, and propagate

probe, penetrate, persist, propagate, and paralyze

penetrate, persist, propagate, paralyze, and probe

persist, propagate, paralyze, probe, and penetrate

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.

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.

What are three types of access attacks? (Choose three.)

Internet information query

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 resounavailable to intended users.

Improperly formatted packets are forwarded to a target device to cause the target

A program writes data beyond the allocated memory to enable the execution of

Cisco CCNA Security, chapter 1 Exam.

What are the basic phases of attack that can be used by a virus or worm in sequential

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.

Users report to the helpdesk that icons usually seen on the menu bar are randomly could be a reason that computers are

Large amounts of network traffic are sent to a target device to make resources

Improperly formatted packets are forwarded to a target device to cause the target

A program writes data beyond the allocated memory to enable the execution of

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

A Trojan Horse can be hard to detect because it closes when the application that launched it closes.

7. Which phase of worm mitigation requires

the network to slow down or stop the worm and prevent currently infected hosts from targeting and infecting other systems?

containment phase

inoculation phase

quarantine phase

treatment phase

8. Which two statements are characteristics of a virus?

A virus typically requires end

A virus has an enabling vulnerability, a propagation mechanism, and a payload.

A virus replicates itself by independently exploiting vulnerabilities

A virus provides the attacker with sensitive data, such as passwords.

A virus can be dormant and then activat 9. What is a ping sweep?

A ping sweep is a network scanning techrange of IP addresses.

A ping sweep is a software application that enables the capture of all network packets sent across a LAN.

A ping sweep is a scanning technique that examines a range of TCP or UDP pnumbers on a host to detect listening services.

A ping sweep is a query and response protocol that identifies information about a domain, including the addresses assigned to that domain.

10. Which type of security threat can be described as software that attaches to another

program to execute a specific unwanted function?

virus

worm

proxy Trojan horse

Denial of Service Trojan horse

11. A disgruntled employee is using Wireshark to discover administrative Telnet

usernames and passwords.

Denial of Service

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 the application that

Which phase of worm mitigation requires compartmentalization and segmentation of the network to slow down or stop the worm and prevent currently infected hosts from targeting and infecting other systems?

containment phase

Which two statements are characteristics of a virus? (Choose two.)

A virus typically requires end-user activation.

A virus has an enabling vulnerability, a propagation mechanism, and a payload.

A virus replicates itself by independently exploiting vulnerabilities

A virus provides the attacker with sensitive data, such as passwords.

A virus can be dormant and then activate at a specific time or date.

A ping sweep is a network scanning technique that indicates the live hosts in a range of IP addresses.

A ping sweep is a software application that enables the capture of all network packets sent across a LAN.

A ping sweep is a scanning technique that examines a range of TCP or UDP pnumbers on a host to detect listening services.

A ping sweep is a query and response protocol that identifies information about a domain, including the addresses assigned to that domain.

Which type of security threat can be described as software that attaches to another program to execute a specific unwanted function?

proxy Trojan horse

Denial of Service Trojan horse

A disgruntled employee is using Wireshark to discover administrative Telnet usernames and passwords. What type of network attack does this describe?

Denial of Service

virus programs or firewalls from functioning.

A Trojan Horse can be hard to detect because it closes when the application that

compartmentalization and segmentation of the network to slow down or stop the worm and prevent currently infected hosts from

A virus has an enabling vulnerability, a propagation mechanism, and a payload.

A virus replicates itself by independently exploiting vulnerabilities in networks.

A virus provides the attacker with sensitive data, such as passwords.

e at a specific time or date.

nique that indicates the live hosts in a

A ping sweep is a software application that enables the capture of all network

A ping sweep is a scanning technique that examines a range of TCP or UDP port

A ping sweep is a query and response protocol that identifies information about a

Which type of security threat can be described as software that attaches to another

A disgruntled employee is using Wireshark to discover administrative Telnet What type of network attack does this describe?

port redirection

reconnaissance

trust exploitation

12. What occurs during the persist phase of a worm attack?

identification of vulnerable targets

modification of system files and registry settings to ensure that the attack code is running

transfer of exploit code through an attack vector

extension of the attack to vulnerable neighboring targets

13. What are the three major components of a worm attack?

enabling vulnerability

infecting vulnerability

payload

penetration mechanism

probing mechanism

propagation mechanism 14. A network administrator detects unknown sessions involving port 21 on the

network. What could be causing this security breach?

An FTP Trojan Horse is executing.

A reconnaissance attack is occurring.

A denial of service attack is occurring.

Cisco Security Agent is testing the network.

15. What are three goals of a port scan attack?

disable used ports and services

determine potential vulnerabilities

identify active services

identify peripheral configurations

identify operating systems

discover system passwords

16. How is a Smurf attack conducted?

by sending a large number of packets, overflowing the allocated buffer memory of the target device

by sending an echo request in an IP packet larger than the maximum packet size of 65,535 bytes

by sending a large number of ICMP requests to directed broadcast addresses from a spoofed source address on t

by sending a large number of TCP SYN packets to a target device from a spoofed source address

trust exploitation

What occurs during the persist phase of a worm attack?

identification of vulnerable targets

modification of system files and registry settings to ensure that the attack code is

er of exploit code through an attack vector

extension of the attack to vulnerable neighboring targets

What are the three major components of a worm attack? (Choose three.)

enabling vulnerability

infecting vulnerability

penetration mechanism

probing mechanism

propagation mechanism

A network administrator detects unknown sessions involving port 21 on the What could be causing this security breach?

An FTP Trojan Horse is executing.

A reconnaissance attack is occurring.

A denial of service attack is occurring.

Cisco Security Agent is testing the network.

What are three goals of a port scan attack? (Choose three.)

disable used ports and services

determine potential vulnerabilities

identify active services

identify peripheral configurations

identify operating systems

discover system passwords

How is a Smurf attack conducted?

by sending a large number of packets, overflowing the allocated buffer memory

by sending an echo request in an IP packet larger than the maximum packet size

by sending a large number of ICMP requests to directed broadcast addresses from a spoofed source address on the same network

by sending a large number of TCP SYN packets to a target device from a spoofed source address

modification of system files and registry settings to ensure that the attack code is

(Choose three.)

A network administrator detects unknown sessions involving port 21 on the

by sending a large number of packets, overflowing the allocated buffer memory

by sending an echo request in an IP packet larger than the maximum packet size

by sending a large number of ICMP requests to directed broadcast addresses

by sending a large number of TCP SYN packets to a target device from a

17. Which access attack method involves a software program attempting to discover a

system password by using an electronic

buffer overflow attack

port redirection attack

Denial of Service attack

brute-force attack

IP spoofing attack

packet sniffer attack

18 Which two network security solutions can be used to mitigate DoS attacks?

two.)

virus scanning

data encryption

anti-spoofing technologies

intrusion protection systems

applying user authentication

19. Which phase of worm mitigation involves terminating the worm process, removing

modified files or system settings that the worm introduced, and patching the vulnerability that the worm used to exploit

containment

inoculation

quarantine

treatment 20. Which characteristic best describes the network security Compliance domain as

specified by the ISO/IEC?

the integration of security into applications

an inventory and classification scheme for information assets

the restriction of accessdata

the process of ensuring conformance witstandards, and regulations

21. Which statement describes phone freaking?

A hacker uses passworddialup account.

A hacker gains unauthorized access to networks via wireless access points.

A hacker mimics a tone using a whistle to make free longanalog telephone network.

A hacker uses a program that automatically scans telephone numbers within a local area, dialing each one in search of computers, bulletin board systems, and fax machines.

Which access attack method involves a software program attempting to discover a system password by using an electronic dictionary?

buffer overflow attack

port redirection attack

Denial of Service attack

force attack

tack

packet sniffer attack

Which two network security solutions can be used to mitigate DoS attacks?

spoofing technologies

intrusion protection systems

applying user authentication

Which phase of worm mitigation involves terminating the worm process, removing modified files or system settings that the worm introduced, and patching the vulnerability that the worm used to exploit the system?

Which characteristic best describes the network security Compliance domain as specified by the ISO/IEC?

the integration of security into applications

an inventory and classification scheme for information assets

the restriction of access rights to networks, systems, applications, functions, and

the process of ensuring conformance with security information policies, standards, and regulations

Which statement describes phone freaking?

A hacker uses password-cracking programs to gain access to a computer via a

A hacker gains unauthorized access to networks via wireless access points.

A hacker mimics a tone using a whistle to make free long-distance calls on an analog telephone network.

gram that automatically scans telephone numbers within a local area, dialing each one in search of computers, bulletin board systems, and

Which access attack method involves a software program attempting to discover a

Which two network security solutions can be used to mitigate DoS attacks? (Choose

Which phase of worm mitigation involves terminating the worm process, removing modified files or system settings that the worm introduced, and patching the

Which characteristic best describes the network security Compliance domain as

rights to networks, systems, applications, functions, and

h security information policies,

cracking programs to gain access to a computer via a

A hacker gains unauthorized access to networks via wireless access points.

distance calls on an

gram that automatically scans telephone numbers within a local area, dialing each one in search of computers, bulletin board systems, and

22. Which two statements describe access attacks?

Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN.

Password attacks can be implemented using bruteHorses, or packet sniffers.

Buffer overflow attacks write data beyond the allocated buffer memory to overwrite valid data or exploit systems to execute malicious code.

Port scanning attacks scan a range of TCP or UDP port numbers on a host to detect listening services.

Trust exploitation attacks can use a laptop acting as a rogue access point to capture and copy all network traffic in a public location on a wireles

Which two statements describe access attacks? (Choose two.)

Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN.

Password attacks can be implemented using brute-force attack methods, TroHorses, or packet sniffers.

Buffer overflow attacks write data beyond the allocated buffer memory to overwrite valid data or exploit systems to execute malicious code.

Port scanning attacks scan a range of TCP or UDP port numbers on a host to detect listening services.

Trust exploitation attacks can use a laptop acting as a rogue access point to capture and copy all network traffic in a public location on a wireles

Port redirection attacks use a network adapter card in promiscuous mode to

force attack methods, Trojan

Buffer overflow attacks write data beyond the allocated buffer memory to overwrite valid data or exploit systems to execute malicious code.

Port scanning attacks scan a range of TCP or UDP port numbers on a host to

Trust exploitation attacks can use a laptop acting as a rogue access point to capture and copy all network traffic in a public location on a wireless hotspot.