300-425 Certification Overview - [Nov 07, 2021] Latest 300-425 PDF Dumps
The Best Cisco 300-425 Study Guides and Dumps of 2021
Wired & Wireless Infrastructure
This subject area makes up 30% of the overall content and measures the applicants’ skills in the following:
- Applying the design demands for data, location, video & voice, as well as hyper location wireless networks;
- Designing wireless bridging, such as Ethernet bridging, modes of operation, and WGB & roaming.
- Determining the requirements of logical infrastructure, which include the WLC/AP licensing needs based on the type of wireless architecture;
- Designing wireless networks that are high in density and their related components, including the campus, lecture halls, and conference rooms;
- Designing radio management (RxSOP, RRM, and RF profiles);
- Defining the requirements of physical infrastructure, such as mounting, cabling, switch port ability, AP power, and grounding;
NEW QUESTION 54
A wireless engineer is performing a post verification of a wireless network. Which two metrics does the engineer verify to ensure that the wireless network can support voice services? (Choose two.)
- A. The coverage area must have a noise floor that does not exceed -87 dBm.
- B. The rate of retransmitted packets must be 20 percent or below.
- C. The client device must have at least an -67 dBm RSSI.
- D. The rate of retransmitted packets must be 15 percent or below.
- E. The client device must have at least an -65 dBm RSSI.
Answer: C,D
NEW QUESTION 55
A wireless engineer is designing a wireless network to support real-time applications over wireless. Which IEEE protocol must the engineer enables on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?
- A. 802.11i
- B. 802.11k
- C. 802.11w
- D. 802.11r
Answer: D
Explanation:
NEW QUESTION 56
When conducting a site survey for real-time traffic over wireless, which two design capabilities of smartphones and tablets must be considered? (Choose two.)
- A. no support for 802.11r
- B. no support for 802.11ac
- C. fewer antennas than laptops
- D. lower data rates than laptops
- E. higher data rates than laptops
Answer: C,D
Explanation:
NEW QUESTION 57
Which statement about AP failover priority for access points when configured with priority 1 or 4 is true?
- A. When configured with priority 1, the access point is assigned with the medium priority level and it is marked as medium. This access point fails over after other access points with the higher priority when there is primary controller failure.
- B. When configured with priority 1, the access point is assigned with the highest priority level and it is marked as critical. This access point fails over before other access points with the lower priority when there is primary controller failure.
- C. When configured with priority 4, the access point is assigned with the lowest priority level and it is marked as low. This access point fails over after other access points with the higher priority when there is primary controller failure.
- D. When configured with priority 4, the access point is assigned with the highest priority level and it is marked as critical. This access point fails over before other access points with the lower priority when there is primary controller failure.
Answer: D
Explanation:
NEW QUESTION 58
A wireless engineer is hired to design a network for a technology company. The company campus has four buildings and a warehouse with access points that provide full wireless coverage as well as a pair of WLCs located in the core of the network. Which type of wireless architecture is being used?
- A. autonomous deployment
- B. unified deployment
- C. distributed deployment
- D. centralized deployment
Answer: D
Explanation:
NEW QUESTION 59
A technician connects a Cisco Aironet 3700 Series access point to a switch and realizes that the AP is coming up with 3x3 MIMO. Which reason explains this behavior?
- A. The switch is PoE+ capable.
- B. The switch is 802.3af capable.
- C. The AP is getting power from a power injector.
- D. A redundant power supply is unavailable on the switch.
Answer: B
Explanation:
NEW QUESTION 60
An engineer must perform an assessment of a customer LAN for a future IEEE 802.11ac Wave 2 wireless deployment All access switches are Fast Ethernet-Capable only, and the wired infrastructure between existing APs and access switches is based on the CAT 6A standard. Which two actions provide maximum support of Cisco 3800 Series access points? (Choose two.)
- A. Ensure that cable distances between access switches and APs are not longer than 100 meters.
- B. Replace the existing switches with gigabit switches with 10G uplinks.
- C. Ensure that cable distances between access switches and APs are not longer than 55 meters.
- D. Replace the existing wiring infrastructure with the CAT-7E wiring standard,
- E. Replace the existing switches with mGig switches.
Answer: B,E
NEW QUESTION 61
Refer to the exhibit.
Which two statements about Cisco Prime Infrastructure are true? (Choose two.)
- A. It shows the planning mode feature in Cisco Prime Infrastructure.
- B. Controllers must be synchronized with Cisco Prime Infrastructure for planning mode to work.
- C. It shows the map editor feature in Cisco Prime Infrastructure.
- D. It presents the recommended number of APs for the selected coverage area based on the selections made.
- E. Planning mode requires a special license in Cisco Prime Infrastructure.
Answer: A,D
Explanation:
NEW QUESTION 62
A customer asks an engineer to explain the concept of mobility domains and mobility groups. Which statement does the engineer respond with?
- A. A mobility group does not constrain the distribution of security context of a client and also does not constrain AP fail-over between controllers when the WLC are in the same mobility domain.
- B. If WLCs are in the same mobility domain, they communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.
- C. WLCs do not need to be in the same mobility domain to communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.
- D. If WLCs are in the same mobility domain, they communicate with each other but, if an anchor WLC is present it must be in the same mobility domain for communication to be possible.
Answer: B
NEW QUESTION 63
A wireless engineer is utilizing the voice readiness tool in Cisco Prime for a customer that wants to deploy Cisco IP phones. Which dBm range is the network inspected against?
- A. -85 to -67 dBm
- B. -78 to -65 dBm
- C. -85 to -65 dBm
- D. -72 to -67 dBm
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/34/user/guide/bk_CiscoPrimeInfrastructur minimum is -90 and maximum is -67 for IP phone
NEW QUESTION 64
An engineer is designing a new wireless network. The network needs to meet these requirements:
Which design approach should be taken?
- A. 5 GHz frequency band with channel bonding, to support 80 MHz channels.
- B. 2.4 GHz frequency band without channel bonding, to support 20 MHz channels
- C. 5 GHz frequency band with channel bonding, to support 40 MHz channels
- D. 5 GHz frequency band without channel bonding, to support 20 MHz channels
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/108184-config-802-11
NEW QUESTION 65
An engineer must ensure that the new wireless LAN deployment can support seamless roaming between access points using a standard based on an amendment to the 802.11 protocol. Which protocol must the engineer selects?
- A. 802.11i
- B. 802.11e
- C. 802.11r
- D. 802.11ac
Answer: C
Explanation:
NEW QUESTION 66
Two cisco 5520 wireless LAN controllers are managing all access points throughout the network. The WLCs are in different locations to provide geographical redundancy a mobility group has been configured on both WLCs and has a UP status on both controllers. The Aps in location A are statically configured to use controller A as the primary and controller B as the secondary. If the WLC in location A goes offline. The Aps successfully join the WLC in location, but they do not fail over to their primary configured controller. Which configuration task fixes the issue?
- A. Enable AP fallback globally on the WLC
- B. Use DHCP Option 43 and specify WLC in location A as primary.
- C. Change the AP Failover Priority to critical.
- D. Configure the WLC in location A as primary using the CAPWAP AP Controller IP Address command on all the location A Access points.
Answer: D
NEW QUESTION 67
A customer has noticed that Client Band Select is enabled and no clients are utilizing the 5 GHz band. Which three parameters must be met to ensure that wireless clients use the 5 GHz band? (Choose three.)
- A. Ensure that channel bonding is enabled on the WLAN.
- B. Ensure that the client is dual-band capable.
- C. Ensure that the UNII-2 extended channels are enabled on the 802.11a radios.
- D. Ensure that the WLAN has 802.11a enabled.
- E. Ensure that the co-channel interference has not exceeded -85 dBm.
- F. Ensure that the client is receiving RSSI above the minimum band select RSSI threshold.
Answer: B,C,D
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob41dg/emob41dg-wrapper/ch3_WLAN.pdf
NEW QUESTION 68
Refer to the exhibit.
A client roams between two APs that are registered to two different controllers, where each controller has an interface in the client subnet. Both controllers are running AireOS. Which scenario explains the client roaming behavior?
- A. Controllers exchange mobility control messages (over UDP port 16666) and a new client session is started with the new controller.
- B. Controllers do not exchange mobility control messages (over UDP port 16666) and the client database, entry is not moved from the original controller to the new controller.
- C. Controllers exchange mobility control messages (over UDP port 16666) and the client database entry is moved from the original controller to the new controller.
- D. Controllers exchange mobility control messages (over UDP port 16666) and the client database entry is tunneled from the original controller to the new controller.
Answer: C
Explanation:
NEW QUESTION 69
Why is 802.11a connectivity reduced in an X-ray room?
- A. X-ray rooms exhibit increased signal attenuation.
- B. X -rays within these rooms cause multipath issues.
- C. X-rays impact the 802,11a UNll-2 channels that cause access points to dynamically change channels.
- D. X-rays create significant non-Wi-Fi interference on the 802.11a band.
Answer: D
NEW QUESTION 70
DRAG DROP
Select and Place:
Answer:
Explanation:
Explanation:
CoPP and MPP
https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html Control Plane Policing (CoPP) - CoPP is the Cisco IOS-wide route processor protection mechanism. As illustrated in Figure 2, and similar to rACLs, CoPP is deployed once to the punt path of the router. However, unlike rACLs that only apply to receive destination IP packets, CoPP applies to all packets that punt to the route processor for handling. CoPP therefore covers not only receive destination IP packets, it also exceptions IP packets and non-IP packets. In addition, CoPP is implemented using the Modular QoS CLI (MQC) framework for policy construction. In this way, in addition to simply permit and deny functions, specific packets may be permitted but rate-limited. This behavior substantially improves the ability to define an effective CoPP policy. (Note: that "Control Plane Policing" is something of a misnomer because CoPP generally protects the punt path to the route processor and not solely the control plane.) CoPP Policy Construction and Deployment Concepts Before describing the details of CoPP policy construction and deployment, some of the important details related to MQC and its operation, especially within the context of CoPP are discussed.
In MQC, the class-map command is used to define a traffic class. A traffic class contains three major elements: a name, one or a series of match commands, and an instruction on how to evaluate these match commands. Match commands are used to specify various criteria for classifying packets. Packets are checked to see whether they match the criteria specified in the match commands. If a packet matches the specified criteria, that packet is considered a member of the class and is treated according to the QoS specifications set in the service policy. Packets that fail to meet any of the matching criteria are classified as members of the default class.
The instruction for evaluating match commands is specified as either match-any or match-all. When more than one match statement is included, match-any requires that a packet match at least one of the statements to be included in the class. If match-all is used, a packet must match all of the statements to be included in the class.
The policy-map command is used to associate a traffic class, defined by the class-map command, with one or more QoS policies. The result of this association is called a service policy. A service policy contains three elements: a name, a traffic class (specified with the class command), and the QoS policies. The purpose of the service policy is to associate a traffic class with one or more QoS policies. Classes included within policy maps are processed top-down. When a packet is found to match a class, no further processing is performed. That is, a packet can only belong to a single class, and it is the first one to which a match occurs. When a packet does not match any of the defined classes, it is automatically placed in the class class-default. The default class is always applied, whether it is explicitly configured or not.
The service-policy command is used to attach the service policy, as specified with the policy-map command, to an interface. In the case of CoPP, this is the control-plane interface. Because the elements of the service policy can be applied to packets entering, or in some versions of CoPP, leaving the interface, users are required to specify whether the service policy characteristics should be applied to incoming or outgoing packets.
It is important to note that MQC is a general framework used for enabling all QoS throughout Cisco IOS, and not exclusively for CoPP. Not all features available within the MQC framework are available or applicable to CoPP policies. For example, only certain classification (match) criteria are applicable to CoPP. In some instances, there are MQC platform and/or IOS-dependencies that may apply to CoPP. Consult the appropriate product references and configuration guides for any CoPP-specific dependencies.
Constructing the CoPP Policy
Deploying the CoPP Policy
Verifying the CoPP Policy
Tuning the CoPP Policy
https://www.cisco.com/c/en/us/td/docs/ios/12_4t/12_4t11/htsecmpp.html#wp1049321 Management Plane The management plane is the logical path of all traffic related to the management of a routing platform. One of three planes in a communication architecture that is structured in layers and planes, the management plane performs management functions for a network and coordinates functions among all the planes (management, control, data). The management plane also is used to manage a device through its connection to the network.
Examples of protocols processed in the management plane are Simple Network Management Protocol (SNMP), Telnet, HTTP, Secure HTTP (HTTPS), and SSH. These management protocols are used for monitoring and for CLI access. Restricting access to devices to internal sources (trusted networks) is critical.
Benefits of the Management Plane Protection Feature
Implementing the MPP feature provides the following benefits:
-Greater access control for managing a device than allowing management protocols on all interfaces
-Improved performance for data packets on nonmanagement interfaces
-Support for network scalability
-Simplifies the task of using per-interface ACLs to restrict management access to the device
-Fewer ACLs needed to restrict access to the device
-Management packet floods on switching and routing interfaces are prevented from reaching the CPU
NEW QUESTION 71
An engineer at a global enterprise organization must ensure that a mesh deployment has the highest number of channels available to the backhnaul. regardless of region deployed. Which design meets this requirement?
- A. redundant controllers in the most restrictive regulatory domain
- B. redundant controllers in the least restrictive regulatory domain
- C. one controller per country code
- D. one controller per continent
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/country_codes.html
NEW QUESTION 72
......
WLAN High Availability
The questions from this section cover 20% of the entire content and are dedicated to evaluating the following abilities of the candidates:
- Design high availability for APs, including fall-back (primary, secondary, and assigning tertiary) and AP prioritization.
- Design high availability for various controllers, including network availability through LAG, stateful switchover, as well as anchor controller priority & redundancy;
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