CCNA Security Exam 1

What method can be used to mitigate ping sweeps?. using encrypted or hashed authentication protocols. installing antivirus software on hosts. deploying antisniffer software on all network devices. blocking ICMP echo and echo-replies at the network edge.

What are the three major components of a worm attack? (Choose three.). a penetration mechanism. an infecting vulnerability. a payload. an enabling vulnerability. a probing mechanism. a propagation mechanism.

Which statement accurately characterizes the evolution of threats to network security?. Internal threats can cause even greater damage than external threats. Threats have become less sophisticated while the technical knowledge needed by an attacker has grown. Early Internet users often engaged in activities that would harm other users. Internet architects planned for network security from the beginning.

What causes a buffer overflow?. launching a security countermeasure to mitigate a Trojan horse. downloading and installing too many software updates at one time. attempting to write more data to a memory location than that location can hold. sending too much information to two or more interfaces of the same device, thereby causing dropped packets. sending repeated connections such as Telnet to a particular device, thus denying other data sources.

What commonly motivates cybercriminals to attack networks as compared to hactivists or state-sponsored hackers? ¿Qué suele motivar a los ciberdelincuentes a atacar redes en comparación con hactivistas o piratas informáticos patrocinados por el estado?. status among peers. fame seeking. financial gain. political reasons.

Which two network security solutions can be used to mitigate DoS attacks? (Choose two.). virus scanning. intrusion protection systems. applying user authentication. antispoofing technologies. data encryption.

Which two statements characterize DoS attacks? (Choose two.). They always precede access attacks. 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. They attempt to compromise the availability of a network, host, or application.

An attacker is using a laptop as a rogue access point to capture all network traffic from a targeted user. Which type of attack is this?. trust exploitation. buffer overflow. man in the middle. port redirection.

An attacker is using a laptop as a rogue access point to capture all network traffic from a targeted user. Which type of attack is this?. buffer overflow. trust exploitation. man in the middle. port redirection.

What functional area of the Cisco Network Foundation Protection framework is responsible for device-generated packets required for network operation, such as ARP message exchanges and routing advertisements?. data plane. control plane. management plane. forwarding plane.

What is the primary method for mitigating malware?. using encrypted or hashed authentication protocols. deploying intrusion prevention systems throughout the network. blocking ICMP echo and echo-replies at the network edge. installing antivirus software on all hosts.

What is an objective of a state-sponsored attack? ¿Cuál es el objetivo de un ataque patrocinado por el estado?. to gain financial prosperity. to sell operation system vulnerabilities to other hackers. to gain attention. to right a perceived wrong.

What role does the Security Intelligence Operations (SIO) play in the Cisco SecureX architecture?. identifying and stopping malicious traffic. identifying applications. enforcing policy. authenticating users.

What worm mitigation phase involves actively disinfecting infected systems? ¿Qué fase de mitigación de gusanos implica la desinfección activa de los sistemas infectados?. Treatment. containment. inoculation. quarantine.

How is a smurf attack conducted?. by sending a large number of packets to overflow the allocated buffer memory of the target device. 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. by sending an echo request in an IP packet larger than the maximum packet size of 65,535 bytes.

What is a characteristic of a Trojan horse as it relates to network security?. Malware is contained in a seemingly legitimate executable program. Extreme quantities of data are sent to a particular network device interface. An electronic dictionary is used to obtain a password to be used to infiltrate a key network device. Too much information is destined for a particular memory block causing additional memory areas to be affected.

What is the first step in the risk management process specified by the ISO/IEC?. Create a security policy. Conduct a risk assessment. Inventory and classify IT assets. Create a security governance model.

What is the significant characteristic of worm malware?. A worm can execute independently of the host system. A worm must be triggered by an event on the host system. Worm malware disguises itself as legitimate software. Once installed on a host system, a worm does not replicate itself.

Which condition describes the potential threat created by Instant On in a data center?. when the primary firewall in the data center crashes. when an attacker hijacks a VM hypervisor and then launches attacks against other devices in the data center. when the primary IPS appliance is malfunctioning. when a VM that may have outdated security policies is brought online after a long period of inactivity.

What are the three core components of the Cisco Secure Data Center solution? (Choose three.). mesh network. secure segmentation. visibility. threat defense. servers. infrastructure.

A disgruntled employee is using Wireshark to discover administrative Telnet usernames and passwords. What type of network attack does this describe?. trust exploitation. denial of service. reconnaissance. port redirection.

Which two statements describe access attacks? (Choose two.). Trust exploitation attacks often involve the use of a laptop to act as a rogue access point to capture and copy all network traffic in a public location, such as a wireless hotspot. ----------------------------------------------------------------------------------------------------. To detect listening services, port scanning attacks scan a range of TCP or UDP port numbers on a host ----------------------------------------------------------------------------------------------------. Buffer overflow attacks write data beyond the hallocated buffer memory to overwrite valid data or to exploit systems to execute malicious code. ----------------------------------------------------------------------------------------------------. Password attacks can be implemented by the use os brute-force attack methods, Trojan horse, or packet sniffers. ----------------------------------------------------------------------------------------------------. Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN. ----------------------------------------------------------------------------------------------------.

What is a ping sweep?. a scanning technique that examines a range of TCP or UDP port numbers on a host to detect listening services. a software application that enables the capture of all network packets that are sent across a LAN. a query and response protocol that identifies information about a domain, including the addresses that are assigned to that domain. a network scanning technique that indicates the live hosts in a range of IP addresses.

As a dedicated network security tool, an intrusion ............... system can provide detection and blocking of attacks in real time.

What is the role of an IPS?. connecting global threat information to Cisco network security devices. authenticating and validating traffic. detecting and blocking of attacks in real time. filtering of nefarious websites.

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.

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? Los usuarios informan a la mesa de ayuda que los iconos que suelen verse en la barra de menú aparecen aleatoriamente en las pantallas de sus computadoras. ¿Cuál podría ser el motivo por el que las computadoras muestran estos gráficos aleatorios?. 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.). buffer overflow. ping sweep. port redirection. trust exploitation. port scan. 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 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.

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 launched it closes.

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? ¿Qué fase de la mitigación del gusano requiere la compartimentación y la segmentación de la red para ralentizar o detener el gusano y evitar que los hosts actualmente infectados ataquen e identifiquen otros sistemas?. containment phase. inoculation phase. quarantine phase. treatment 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 in networks. 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.

Which type of security threat can be described as software that attaches to another program to execute a specific unwanted function? ¿Qué tipo de amenaza de seguridad se puede describir como software que se conecta a otro programa para ejecutar una función no deseada específica?. virus. worm. proxy Trojan horse. Denial of Service Trojan horse.

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.

A network administrator detects unknown sessions involving port 21 on the network. What could be causing this security breach? Un administrador de red detecta sesiones desconocidas que involucran el puerto 21 en la red. ¿Qué podría estar causando esta violación de seguridad?. 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. identify active services. identify peripheral configurations. identify operating systems. discover system passwords. determine potential vulnerabilities.

Which access attack method involves a software program attempting to discover a system password by using an electronic dictionary?. buffer overflow attack. Denial of Service attack. brute-force attack. IP spoofing attack. packet sniffer attack. port redirection attack.

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? ¿Qué fase de la mitigación del gusano implica terminar el proceso del gusano, eliminar los archivos modificados o las configuraciones del sistema que introdujo el gusano, y reparar la vulnerabilidad que el gusano utilizó para explotar el sistema?. containment. inoculation. quarantine. treatment.

Which statement describes phone freaking?. A hacker uses password-cracking programs to gain access to a computer via a dialup account. 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. 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 characteristic best describes the network security Compliance domain as specified by the ISO/IEC? ¿Qué característica describe mejor el dominio de cumplimiento de seguridad de red especificado por 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 data. the process of ensuring conformance with security information policies, standards, and regulations.

Which three options describe the phases of worm mitigation? (Choose three.). The containment phase requires the use of incoming and outgoing ACLs on routers and firewalls. The containment phase tracks down and identifies the infected machines within the contained areas. The inoculation phase disconnects, blocks, or removes infected machines. The inoculation phase patches uninfected systems with the appropriate vendor patch for the vulnerability. The quarantine phase terminates the worm process, removes modified files or system settings, and patches the vulnerability the worm used to exploit the system. The treatment phase disinfects actively infected systems.

What is considered a valid method of securing the control plane in the Cisco NFP framework? ¿Qué se considera un método válido para asegurar el plano de control en el marco de Cisco NFP?. authorization of actions. dynamic ARP inspection. login and password policy. routing protocol authentication. role-based access control. DHCP snooping.

A port scan is classified as what type of attack?. access attack. Denial of Service attack. reconnaissance attack. spoofing attack.

Which type of software typically uses a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN?. port scanner. ping sweeper. packet sniffer. Internet information query.

What are two reasons for securing the data plane in the Cisco NFP framework? (Choose two.). to protect against DoS attacks. to provide bandwidth control. to force technicians to use SSH and HTTPS when managing devices. to provide a record of who accessed the device, what occurred, and when it occurred. to allow users to control the flow of traffic that is managed by the route processor of their network devices.

What are the three components of information security? (Choose three.). availability. confidentiality. disclosure. integrity. safety. connectivity.

Which domain of network security would contain a document that specifies the level of access that college staff have to the student records server? ¿Qué dominio de la seguridad de la red contendría un documento que especifique el nivel de acceso que el personal de la universidad tiene para el servidor de registros del alumno?. asset management. communication and network management. risk assessment. security policy.

Which security organization would most likely coordinate communication between security experts in various US agencies when a security attack has been launched?. CERT. CIS. (ISC)2. SANS.

How would limiting the type and number of input characters on a web page help with network security? ¿De qué manera la limitación del tipo y número de caracteres de entrada en una página web, ayudaría con la seguridad de la red?. It deters hacking. It provides content filtering. It protects from DoS attacks. It prevents open ports from being used in an improper manner.