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Cisco 200-301 Bundle

Exam Code: 200-301

Exam Name Cisco Certified Network Associate (CCNA)

Certification Provider: Cisco

Corresponding Certification: CCNA

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Cisco 200-301 Practice Test 89

Question 880

A campus engineer sees this Ethernet aggregation condition: show etherchannel summary displays Po2(RU) and Gi1/0/2(P). Which statement or response is technically correct?

  1. Assume R means the member is blocked by spanning tree
  2. Assume P means EtherChannel is operating solely in PAgP mode
  3. Assume U means the channel has no configured interfaces
  4. Recognize RU as a Layer 3 port-channel in use and P as bundled

Explanation

Correct Answer

D:

R denotes Layer 3 operation, U denotes in use, and P denotes a bundled member.

Incorrect Answers

A:

This choice does not follow the observed LACP/port-channel state and would not correct the specified condition.

B:

That explanation does not distinguish this option. “Assume P means EtherChannel is operating solely in PAgP mode” is an alternative action, but it does not by itself establish the outcome required in this case.

C:

That explanation does not distinguish this option. “Assume U means the channel has no configured interfaces” is an alternative action, but it does not by itself establish the outcome required in this case.

Question 881

Eastbrook Labs needs to advertise basic device identity to a multivendor adjacent device. Which implementation directly addresses that objective without replacing it with a different network control?

  1. Use SSH rather than Telnet
  2. Check AP management IP, DHCP, DNS/discovery and routing to the WLC
  3. Enable and inspect LLDP on the link
  4. Align trunk or access settings and permitted VLANs across members

Explanation

Correct Answer

C:

LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities. This is the control that implements the specified requirement.

Incorrect Answers

A:

SSH encrypts remote terminal data and authentication, whereas Telnet does not. That is not sufficient here: LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities.

B:

Layer 1 link up alone does not establish controller discovery and join reachability. That is not sufficient here: LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities.

D:

Member interfaces require compatible Layer 2 parameters to join the same logical bundle. That is not sufficient here: LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities.

Question 882

A change advisory for Copperline Studios has two requirements: (1) prevent an unused VLAN from crossing a trunk link, and (2) bundle two compatible physical Ethernet switchports into one logical LACP link. Select TWO actions that together satisfy both outcomes.

  1. Configure matching channel-group IDs with mode active on the intended member ports
  2. Recognize VLAN 1 as the default access VLAN
  3. Consider FlexConnect operation on supported APs
  4. Enable a supported protected authentication and encryption policy on the WLAN
  5. Remove it from the trunk allowed VLAN list

Explanation

Correct Answers

A:

Correct for outcome (2): LACP negotiates a logical port-channel while distributing eligible flows across member links. It complements the first required control.

E:

Correct for outcome (1): The allowed list determines which tagged VLANs may traverse the trunk. The other outcome needs its separate action.

Incorrect Answers

B:

Not selected: Recognize VLAN 1 as the default access VLAN is for place untagged access switchports into their default VLAN on a factory-reset switch. Cisco default Layer 2 switchports belong to VLAN 1 until explicitly assigned otherwise. This is outside the two requested outcomes.

C:

Not selected: Consider FlexConnect operation on supported APs is for support a remote site that cannot always reach the controller. FlexConnect supports selected local switching and local survivability behavior in branch deployments. This does not provide either of the two specified controls.

D:

Not selected: Enable a supported protected authentication and encryption policy on the WLAN is for reject unsecured wireless client associations on a protected SSID. A secure SSID must negotiate the configured credentials and cipher before passing client data. This is not one of the two required changes.

Question 883

During a review, the administrator for Hillcrest Utilities is asked to identify malicious intrusion signatures in transit rather than simply filtering ports. Which approach satisfies the precise requirement?

  1. Use an intrusion prevention system with applicable inspection signatures
  2. Classify 10/8 as private IPv4 space
  3. Use an OS-level container runtime
  4. Use an IPv6 ping to the remote unicast endpoint

Explanation

Correct Answer

A:

An IPS examines traffic for threat patterns and can block matching packets beyond ordinary port ACLs. This is the control that implements the specified requirement.

Incorrect Answers

B:

RFC1918 private ranges are not publicly routed on the global internet. That is not sufficient here: An IPS examines traffic for threat patterns and can block matching packets beyond ordinary port ACLs.

C:

Containers share the host kernel while isolating processes and dependencies. That is not sufficient here: An IPS examines traffic for threat patterns and can block matching packets beyond ordinary port ACLs.

D:

An IPv6 echo exchange validates reachability across the IPv6 forwarding path. That is not sufficient here: An IPS examines traffic for threat patterns and can block matching packets beyond ordinary port ACLs.

Question 884

Four OSPF routers share a broadcast Ethernet segment. R4 has the numerically highest router ID but interface priority zero. R1–R3 have positive priorities. Can R4 become DR or BDR on this segment?

  1. No; priority zero makes R4 ineligible for DR/BDR election on that interface.
  2. Yes; highest router ID always overrides zero priority
  3. Yes; every router on Ethernet must take a turn as DR
  4. No; zero priority prevents all OSPF neighbor relationships

Explanation

Correct Answer

A:

Router ID breaks ties among eligible candidates, but interface priority zero excludes that router from becoming designated or backup designated router on the broadcast network.

Incorrect Answers

B:

Router ID is a tie breaker among eligible candidates, not an override for priority-zero ineligibility.

C:

DR elections do not rotate all routers, and priority-zero members cannot win.

D:

Priority zero affects DR/BDR election, not all OSPF neighbor discovery with other routers.

Question 885

A change request at Eastbrook Labs during network acceptance testing requires the team to classify which router interface is inside and which is outside for NAT. What response best fits this requirement?

  1. Use show ip nat translations on the translating router
  2. Set an appropriate DSCP marking at a trusted policy boundary
  3. Send syslog to an external authorized collector
  4. Set ip nat inside and ip nat outside on correct interfaces

Explanation

Correct Answer

D:

NAT direction depends on the configured inside/outside interface roles. This is the control that implements the specified requirement.

Incorrect Answers

A:

The NAT translation table lists original and translated addresses and ports for active entries. That is not sufficient here: NAT direction depends on the configured inside/outside interface roles.

B:

DSCP bits in the IP header signal intended per-hop forwarding treatment. That is not sufficient here: NAT direction depends on the configured inside/outside interface roles.

C:

Local device buffers can be lost on reboot, while a log server retains centralized history. That is not sufficient here: NAT direction depends on the configured inside/outside interface roles.

Question 886

A user-facing access port is configured as an RSTP PortFast edge. An unauthorized small switch is connected and begins sending spanning-tree BPDUs. Which configured safeguard should place the edge port in an error-disabled state on receipt of the BPDU?

  1. Enable PortFast alone and assume received BPDUs will never be acted on.
  2. Configure Root Guard so every received BPDU, including nonsuperior ones, triggers err-disable.
  3. Disable spanning tree globally so the port cannot process BPDUs.
  4. Enable BPDU Guard on the intended edge port and verify the err-disabled event after a test BPDU.

Explanation

Correct Answer

D:

BPDU Guard protects an edge/PortFast port from an unexpected switch connection by disabling the port when a BPDU is received, subject to the configured platform behavior.

Incorrect Answers

A:

PortFast speeds initial edge forwarding; by itself it is not the same as BPDU Guard err-disabling the port.

B:

Root Guard responds to superior BPDUs with root-inconsistent blocking, not the same all-BPDU err-disable behavior.

C:

Removing loop prevention is unsafe and does not implement the requested protective err-disable action.

Question 887

An operations ticket for Pinecrest Schools has two requirements: (1) prioritize voice packets during transient interface congestion, and (2) smooth a bursty outbound application below a contracted rate. Which option meets both stated needs?

  1. First, set default-router to the correct local gateway in the DHCP network scope; then configure ip helper-address on the client VLAN interface.
  2. First, use a bounded low-latency priority queue for the voice class; then configure a static inside source NAT mapping.
  3. First, use a bounded low-latency priority queue for the voice class; then apply traffic shaping to buffer and pace excess packets.
  4. First, classify packets using matching criteria such as DSCP or ACL; then apply traffic shaping to buffer and pace excess packets.

Explanation

Correct Answer

C:

Both outcomes are covered: (1) Priority queuing reduces delay and jitter for latency-sensitive traffic if policed appropriately. (2) Shaping delays packets to meet an average rate rather than immediately dropping all excess. Neither action is a substitute for the other.

Incorrect Answers

A:

Neither step is the requested pair: Set default-router to the correct local gateway in the DHCP network scope is for offer the default gateway to clients through an IOS DHCP pool, and Configure ip helper-address on the client VLAN interface is for relay DHCP client broadcasts from a VLAN to a server in another subnet. The DHCP router option tells clients which on-link next hop handles off-subnet destinations. The proposed plan misses the two stated outcomes.

B:

The first step covers (1), but the second addresses translate one inside server IP to a fixed public IPv4 address. Static NAT creates a persistent one-to-one inside-local to inside-global translation. It leaves outcome (2) unfulfilled.

D:

The second step covers (2), but the first addresses identify a critical traffic class using header fields before queuing. QoS classification places packets into classes for later marking, queuing or policing actions. It leaves outcome (1) unfulfilled.

Question 888

An acceptance check at Summit Research has two requirements: (1) explain why fabric endpoint mobility can work without changing each physical trunk, and (2) limit the blast radius of a faulty automation deployment. Which plan correctly handles both requirements?

  1. First, send application/json with valid key-value object syntax; then use the underlay network.
  2. First, use logical overlay endpoint mappings on a reachable underlay; then roll out changes to a small validated device group before fleet-wide execution.
  3. First, use logical overlay endpoint mappings on a reachable underlay; then use a JSON array enclosed in square brackets.
  4. First, use braces, brackets and string keys rather than XML tags; then roll out changes to a small validated device group before fleet-wide execution.

Explanation

Correct Answer

B:

Both outcomes are covered: (1) Endpoint-to-location mappings decouple service connectivity from physical topology. (2) Staged automation reduces the number of devices affected by an unexpected template error. Neither action is a substitute for the other.

Incorrect Answers

A:

Neither step is the requested pair: Send application/json with valid key-value object syntax is for pass JSON data to a REST API endpoint, and Use the underlay network is for identify the physical routed transport that carries tunneled traffic between fabric nodes. JSON encodes objects and arrays in a machine-readable representation accepted by many REST APIs. The proposed plan misses the two stated outcomes.

C:

The first step covers (1), but the second addresses represent an ordered collection of network interfaces in JSON. JSON arrays contain ordered elements which can be objects, scalars or other arrays. It leaves outcome (2) unfulfilled.

D:

The second step covers (2), but the first addresses recognize that XML element tags are not valid JSON object syntax. JSON objects and arrays have their own literal syntax distinct from XML markup. It leaves outcome (1) unfulfilled.

Question 889

During a review, the administrator for Baypoint Retail is asked to package a process with its libraries using the host operating system kernel. Which approach satisfies the precise requirement?

  1. Use a Layer 3 switch with switched virtual interfaces and IP routing
  2. Keep tenant interfaces and route entries in isolated VRFs
  3. Use copper twisted-pair cabling within the Ethernet standard's reach
  4. Use an OS-level container runtime

Explanation

Correct Answer

D:

Containers share the host kernel while isolating processes and dependencies. This is the control that implements the specified requirement.

Incorrect Answers

A:

SVIs terminate VLAN IP subnets while hardware routing forwards packets between VLANs. That is not sufficient here: Containers share the host kernel while isolating processes and dependencies.

B:

A route in one VRF is not automatically visible in another without an explicit leak or import. That is not sufficient here: Containers share the host kernel while isolating processes and dependencies.

C:

Copper Ethernet PHYs are designed for local structured cabling with category and distance limits. That is not sufficient here: Containers share the host kernel while isolating processes and dependencies.

Question 890

Stonebridge Learning needs to generate credentials used by an IOS SSH server. Which implementation directly addresses that objective without replacing it with a different network control?

  1. Configure transport input ssh on the intended VTY lines
  2. Read the syslog facility and severity as distinct attributes
  3. Generate appropriate RSA or supported SSH host keys
  4. Use SNMPv3 with authentication and privacy where supported

Explanation

Correct Answer

C:

SSH server authentication depends on a usable host key rather than only configuring a VTY password. This is the control that implements the specified requirement.

Incorrect Answers

A:

Restricting VTY transport to SSH prevents cleartext Telnet management access. That is not sufficient here: SSH server authentication depends on a usable host key rather than only configuring a VTY password.

B:

Facility indicates message origin while severity indicates importance. That is not sufficient here: SSH server authentication depends on a usable host key rather than only configuring a VTY password.

D:

SNMPv3 authPriv protects management messaging with authenticated and encrypted transport. That is not sufficient here: SSH server authentication depends on a usable host key rather than only configuring a VTY password.