Ccna Security Chapter 6 Exam Answers

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All access ports should be assigned to VLAN 1. All trunk ports should be assigned to VLAN 1. VLAN 1 should be used for management traffic. Choose two. Which option best describes a MAC address spoofing attack? An attacker gains access to another...

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An attacker floods the MAC address table of a switch so that the switch can no longer filter network access based on MAC addresses. Which attack relies on the default automatic trunking configuration on most Cisco switches? Which two measures are recommended to mitigate VLAN hopping attacks? Place all unused ports in a separate guest VLAN. Enable DTP on all trunk ports. Ensure that the native VLAN is used for management traffic. Which three are SAN transport technologies? Choose three. Refer to the exhibit. Packets with unknown source addresses are dropped, but notification of the dropped packets is sent. The interface immediately becomes error-disabled and the port LED is turned off. Which software tool can a hacker use to flood the MAC address table of a switch? Which two methods are used to mitigate VLAN attacks? Which three switch security commands are required to enable port security on a port so that it will dynamically learn a single MAC address and disable the port if a host with any other MAC address is connected?

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What is an example of a trusted path in an operating system? Why are traditional network security perimeters not suitable for the latest consumerbased network endpoint devices? These devices are not managed by the corporate IT department. These devices connect to the corporate network through public wireless networks. These devices pose no risk to security as they are not directly connected to the corporate network. Which Cisco IronPort appliance would an organization install to manage and monitor security policy settings and audit information? Which Cisco IronPort appliance would an organization install to protect against malware? When the Cisco NAC appliance evaluates an incoming connection from a remote device against the defined network policies, what feature is being used?

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All data traffic that passes between protected ports must be forwarded through a Layer 2 device. Only broadcast traffic is forwarded between protected ports. Only unicast traffic is forwarded between protected ports. All active ports are defined as protected. All ports are defined as protected. EtherChannel groups are defined as protected ports.

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Under which circumstance is it safe to connect to an open wireless network? The connection utilizes the The device has been updated with the latest virus protection software. The user does not plan on accessing the corporate network when attached to the open wireless network. Minat Terkait.

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They provide four important functions: authentication, authorization, and accounting; posture assessment evaluating an incoming device against the security policies , quarantining of non-compliant systems, and remediation of noncompliant devices. Which feature is part of the Antimalware Protection security solution? What is the only type of port that an isolated port can forward traffic to on a private VLAN? The level of isolation can be specified with three types of PVLAN ports: Promiscuous ports that can forward traffic to all other ports Isolated ports that can only forward traffic to promiscuous ports Community ports that can forward traffic to other community ports and promiscuous ports What security countermeasure is effective for preventing CAM table overflow attacks?

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Port security gives an administrator the ability to manually specify what MAC addresses should be seen on given switch ports. It provides a method for limiting the number of MAC addresses that can be dynamically learned over a switch port. Which two functions are provided by Network Admission Control? Choose two. Storm control is a feature that can prevent excessive broadcasts and multicasts from disrupting other LAN traffic. Which spanning-tree enhancement prevents the spanning-tree topology from changing by blocking a port that receives a superior BPDU? The role of the Cisco NAC Manager is to define the security policies of user access and endpoint security policies.

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The Cisco NAC server assesses and enforces security policy compliance. It defines role-based user access and endpoint security policies. It provides the ability for creation and reporting of guest accounts. It performs deep inspection of device security profiles. Cisco NAC is used in the Cisco Borderless Network Architecture to authenticate users and ensure that user devices are compliant with security policies. Which security feature should be enabled in order to prevent an attacker from overflowing the MAC address table of a switch? This feature can prevent an attacker from flooding a switch with many spoofed MAC addresses. What is the behavior of a switch as a result of a successful CAM table attack? The switch will forward all received frames to all other ports. The switch interfaces will transition to the error-disabled state. The switch will shut down. When this happens, no new MAC addresses can be added to the CAM table and the switch will forward all received frames to all other ports.

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This would allow an attacker to capture all traffic that is flooded by the switch. What additional security measure must be enabled along with IP Source Guard to protect against address spoofing? Which mitigation technique would prevent rogue servers from providing false IP configuration parameters to clients? What are three techniques for mitigating VLAN hopping attacks? Choose three.

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What are three primary benefits of using VLANs? Choose three. Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port? A network administrator is determining the best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking? Enter the no vlan 2 and the vlan 3 commands in global configuration mode. Enter the switchport access vlan 3 command in interface configuration mode.

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Enter the no shutdown command in interface configuration mode to return it to the default configuration and then configure the port for VLAN 3. When a Cisco switch receives untagged frames on a An error message would be displayed. Which command is used to remove only VLAN 20 from a switch? The port becomes inactive. The port automatically associates itself with the native VLAN.

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The port creates the VLAN again. Which two characteristics match extended range VLANs? Choose two. They are commonly used in small networks. Refer to the exhibit. What is the problem? The native VLAN is being pruned from the link. The trunk has been configured with the switchport nonegotiate command. What is a characteristic of legacy inter-VLAN routing? Only one VLAN can be used in the topology. Inter-VLAN routing must be performed on a switch instead of a router. Which four steps are needed to configure a voice VLAN on a switch port? Choose four. Configure the switch port in access mode. Add a voice VLAN. Ensure that voice traffic is trusted and tagged with a CoS priority value. Configure the interface as an IEEE What is a disadvantage of using router-on-a-stick inter-VLAN routing?

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What will the router do with this packet? The router will drop the packet. A router with at least two LAN interfaces should be used. A switch with a port that is configured as trunk is needed to connect to a router. A network administrator needs to configure router-on-a-stick for the networks that are shown.

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Jitter is the variation in the delay of the received packets. Both delay and jitter need to be controlled in order to support real-time voice and video traffic. A network engineer performs a ping test and receives a value that shows the time it takes for a packet to travel from a source to a destination device and return. Which term describes the value? Jitter is the variation in the latency values of received packets. Bandwidth is the measurement of how much traffic is transmitted in a single second. Priority is the preferential treatment of specific classes of traffic. What are two characteristics of voice traffic? Choose two. Dropped voice packets are not retransmitted. Voice traffic latency should not exceed ms. Voice traffic consumes lots of network resources. Voice traffic does not consume a lot of network resources, such as bandwidth. However, it is very sensitive to delay and dropped packets cannot be retransmitted.

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For good voice quality, the amount of latency should always be less than milliseconds. How does a Cisco router using tail drop handle congestion when a traffic queue becomes full? The router will remove the packet in the front of the queue, move all other packets forward, and insert the just arrived packet at the end. The router will drop any packet that arrives at the end of the queue. The router will only drop non delay-sensitive data that is close to the end of the queue. Tail drop is also known as packet drop and is used by a router to discard any packet that arrives at the tail end of a queue. Tail drop treats all traffic equally and does not differentiate between delay-sensitive data and other traffic. For classifying packets into classes with CBWFQ, what is the purpose of configuring a maximum packet limit for a class? A network engineer is selecting a QoS method to control congestion on a VPN tunnel link between the headquarters site and a branch office.

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Which queuing method cannot be used to classify and control VPN traffic? An administrator has mastered the use of access control lists ACLs and wants to deploy QoS by defining different traffic classes through the use of ACLs. Which queuing method provides this functionality? CBWFQ allows an administrator to define traffic classes based on match criteria such as protocols, access control lists ACLs , and input interfaces. Which queuing algorithm has only a single queue and treats all packets equally?

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All packets are treated equally. A network administrator is deploying QoS with the ability to provide a special queue for voice traffic so that voice traffic is forwarded before network traffic in other queues. Which queuing method would be the best choice? What are two characteristics of DiffServ QoS model? TCP flows are grouped into a single class. Network devices are setup to service multiple classes of traffic where each class of traffic has different QoS requirements. What are two characteristics of the best-effort QoS model? It treats all network packets in the same way. It uses a connection-oriented approach with QoS. It provides preferential treatment for voice packets. It does not provide a delivery guarantee for packets. The best-effort QoS model treats all network packets in the same way. What role do network devices play in the IntServ QoS model?

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Network devices use QoS on a hop-by-hop basis to provide excellent scalability. Network devices ensure that resources are available before traffic is allowed to be sent by a host through the network. Network devices provide a best-effort approach to forwarding traffic. The IntServ QoS model uses resource reservation to guarantee bandwidth and packet-loss rates from end to end. IntServ uses a connection-oriented approach to ensure that available resources are sufficient in the network for the traffic to have a specific level of QoS. Which QoS model is very resource intensive and provides the highest guarantee of QoS?

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