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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 83

Question 820

Switches on one Rapid PVST+ VLAN instance advertise these bridge IDs: SW-1 (priority 4096, MAC 7711870e860e); SW-2 (priority 28672, MAC 310a6dac075a); SW-3 (priority 12288, MAC 6d617564887a); SW-4 (priority 16384, MAC 4c082956a820). They are powered on with no previous root. Which switch is the elected root?

  1. SW-1 (priority 4096, MAC 7711870e860e)
  2. SW-4 (priority 16384, MAC 4c082956a820)
  3. SW-2 (priority 28672, MAC 310a6dac075a)
  4. SW-3 (priority 12288, MAC 6d617564887a)

Explanation

Correct Answer

A:

The STP root is the switch with the numerically lowest bridge ID: priority is compared first, followed by MAC on ties. SW-1 has the lowest priority 4096.

Incorrect Answers

B:

Its advertised priority is greater than the winner 4096, and no tie breaker changes the result.

C:

That explanation does not distinguish this option. “SW-2 (priority 28672, MAC 310a6dac075a)” is an alternative action, but it does not by itself establish the outcome required in this case.

D:

That explanation does not distinguish this option. “SW-3 (priority 12288, MAC 6d617564887a)” is an alternative action, but it does not by itself establish the outcome required in this case.

Question 821

Four OSPF routers become eligible simultaneously on an Ethernet broadcast segment, with no existing DR/BDR: R1 (priority 1, router ID 10.255.0.239); R2 (priority 1, router ID 10.255.0.64); R3 (priority 1, router ID 10.255.0.132); R4 (priority 1, router ID 10.255.0.116). All four routers now have equal interface priority. Which router wins the DR election based on the router-ID tie-breaker?

  1. R4 (priority 1, router ID 10.255.0.116)
  2. R3 (priority 1, router ID 10.255.0.132)
  3. R1 (priority 1, router ID 10.255.0.239)
  4. R2 (priority 1, router ID 10.255.0.64)

Explanation

Correct Answer

C:

All routers have equal OSPF priority 1; the highest router ID, 10.255.0.239, wins the DR election.

Incorrect Answers

A:

R4 has the same priority as its peers but router ID 10.255.0.116 is below 10.255.0.239; router ID decides a priority tie.

B:

R3 has the same priority as its peers but router ID 10.255.0.132 is below 10.255.0.239; router ID decides a priority tie.

D:

R2 has the same priority as its peers but router ID 10.255.0.64 is below 10.255.0.239; router ID decides a priority tie.

Question 822

A Cisco extended IPv4 ACL must permit IPv4 packets from EVERY source in subnet 10.43.170.0/26 to any destination, and no sources outside that subnet. Which IOS ACE uses the correct wildcard for this network?

  1. access-list 110 permit ip 10.43.170.0 0.0.3.255 any
  2. access-list 110 permit ip 10.43.170.0 0.0.0.127 any
  3. access-list 110 permit ip 10.43.170.0 0.0.0.63 any
  4. access-list 110 permit ip 10.43.170.0 0.0.0.7 any

Explanation

Correct Answer

C:

ACL wildcard 0.0.0.63 is the inverse of subnet mask 255.255.255.192; the ACE access-list 110 permit ip 10.43.170.0 0.0.0.63 any matches the requested source subnet exactly.

Incorrect Answers

A:

That ACE uses a wildcard with a different number of ignored address bits, so its source range does not equal the required subnet.

B:

That explanation does not distinguish this option. “access-list 110 permit ip 10.43.170.0 0.0.0.127 any” is an alternative action, but it does not by itself establish the outcome required in this case.

D:

That explanation does not distinguish this option. “access-list 110 permit ip 10.43.170.0 0.0.0.7 any” is an alternative action, but it does not by itself establish the outcome required in this case.

Question 823

During a review, the administrator for Oakbridge University is asked to reduce blast radius if one user endpoint becomes compromised. Which approach satisfies the precise requirement?

  1. Select an appropriate WPA2/WPA3 protected security mode
  2. Configure login block-for with appropriate attempts and time windows
  3. Segment access and apply least-privilege traffic rules
  4. Monitor traffic for reconnaissance patterns and apply edge controls

Explanation

Correct Answer

C:

Segmentation limits lateral movement paths through network boundaries. This is the control that implements the specified requirement.

Incorrect Answers

A:

Modern WLAN security limits passive interception and weak key recovery compared with WEP/open modes. That is not sufficient here: Segmentation limits lateral movement paths through network boundaries.

B:

The IOS login block feature delays further attempts after repeated failed authentications. That is not sufficient here: Segmentation limits lateral movement paths through network boundaries.

D:

Scanning probes service exposure and can be an early indicator of attempted intrusion. That is not sufficient here: Segmentation limits lateral movement paths through network boundaries.

Question 824

A network upgrade at Pinecrest Schools has two requirements: (1) avoid allowing untrusted access ports to forward forged DHCP server responses, and (2) protect a Wi-Fi network using AES-CCMP and a shared passphrase. Select TWO actions that together satisfy both outcomes.

  1. Enable DHCP snooping globally and for the client VLAN, and trust only the legitimate DHCP server or relay uplink while keeping user ports untrusted
  2. Use WPA3-Personal with compatible clients
  3. Use WPA2-Personal where the WLAN/client support it
  4. Separate authentication from authorization in AAA
  5. Inspect show access-lists counters on the device

Explanation

Correct Answers

A:

Correct for outcome (1): Enable DHCP snooping globally and on the protected VLAN; trust only approved server/relay uplinks while leaving user-facing ports untrusted. On supported Cisco switches, trusted interfaces alone do not activate snooping, and a rogue server response on an untrusted access port must be dropped. The other outcome needs its separate action.

C:

Correct for outcome (2): WPA2 uses robust AES-based link protection in common personal-mode deployments. It complements the first required control.

Incorrect Answers

B:

Not selected: Use WPA3-Personal with compatible clients is for gain SAE-based password authentication on a modern wireless LAN. WPA3-Personal uses SAE for password-authenticated key establishment. This is outside the two requested outcomes.

D:

Not selected: Separate authentication from authorization in AAA is for avoid confusing proof of identity with permission to change a VLAN. A valid credential alone does not entitle a user to modify network configuration. This does not provide either of the two specified controls.

E:

Not selected: Inspect show access-lists counters on the device is for verify which ACL entries have matches during traffic tests. IOS ACL match counters can show which permit or deny clauses see selected traffic. This is not one of the two required changes.

Question 825

An acceptance check at Cascade Health has two requirements: (1) provide wire-speed forwarding within the same access VLAN, and (2) enable inter-VLAN routing on a campus distribution device. Select TWO actions that together satisfy both outcomes.

  1. Issue no shutdown on the intended interface after checking change authority
  2. Use a Layer 2 Ethernet switch
  3. Use a Layer 3 switch with switched virtual interfaces and IP routing
  4. Validate gateway and host network portions under the configured mask
  5. Use the service set identifier or SSID

Explanation

Correct Answers

B:

Correct for outcome (1): A Layer 2 switch learns source MAC addresses and forwards frames by destination MAC within a broadcast domain. The other outcome needs its separate action.

C:

Correct for outcome (2): SVIs terminate VLAN IP subnets while hardware routing forwards packets between VLANs. It complements the first required control.

Incorrect Answers

A:

Not selected: Issue no shutdown on the intended interface after checking change authority is for interpret an interface that is administratively down. Administratively down indicates a configuration state rather than proof of failed physical media. This does not provide either of the two specified controls.

D:

Not selected: Validate gateway and host network portions under the configured mask is for avoid assigning a gateway outside a host's IPv4 subnet. A directly reachable default gateway normally needs an on-link address in the host's subnet. This is not one of the two required changes.

E:

Not selected: Use the service set identifier or SSID is for identify the broadcast identifier clients select to join a WLAN. An SSID is the logical wireless network name advertised or provisioned to clients. This is outside the two requested outcomes.

Question 826

A change advisory for Greenfield Services has two requirements: (1) shut an edge port immediately if an unexpected switch BPDU arrives, and (2) prevent a downstream switch from claiming the root role over an uplink. Which proposed plan satisfies both outcomes?

  1. First, use show interfaces trunk; then enable Root Guard on the intended designated port.
  2. First, enable BPDU Guard on the PortFast edge port; then enable Root Guard on the intended designated port.
  3. First, enable and inspect LLDP on the link; then use the approved 802.1Q trunk configuration when the AP model/mode requires it.
  4. First, enable BPDU Guard on the PortFast edge port; then use a controller-based WLAN architecture.

Explanation

Correct Answer

B:

Both outcomes are covered: (1) BPDU Guard error-disables a protected edge port receiving a BPDU to prevent accidental loops. (2) Root Guard holds the port in a root-inconsistent state if superior BPDUs arrive. Neither action is a substitute for the other.

Incorrect Answers

A:

The second step covers (2), but the first addresses confirm which VLANs are actively forwarded over a trunk. The command displays operational trunks, encapsulation/native VLAN and allowed/active VLANs. It leaves outcome (1) unfulfilled.

C:

Neither step is the requested pair: Enable and inspect LLDP on the link is for advertise basic device identity to a multivendor adjacent device, and Use the approved 802.1Q trunk configuration when the AP model/mode requires it is for carry multiple tagged WLAN VLANs to a locally switching AP. LLDP is a vendor-neutral Layer 2 discovery protocol that advertises neighbor identity and capabilities. The proposed plan misses the two stated outcomes.

D:

The first step covers (1), but the second addresses centrally manage radio settings of lightweight campus APs. Lightweight APs and a controller separate centralized policy/control from radio client access. It leaves outcome (2) unfulfilled.

Question 827

A change advisory for Cedarline Hotels has two requirements: (1) reduce co-channel contention among nearby access points, and (2) explain why a strong received signal can still produce poor WLAN throughput. Which option meets both stated needs?

  1. First, plan channel reuse and transmit power after an RF survey; then use channels 1, 6 and 11.
  2. First, use a Layer 3 switch with switched virtual interfaces and IP routing; then investigate channel interference and signal-to-noise ratio.
  3. First, plan channel reuse and transmit power after an RF survey; then investigate channel interference and signal-to-noise ratio.
  4. First, use separate virtual routing and forwarding instances; then use an intrusion prevention system with applicable inspection signatures.

Explanation

Correct Answer

C:

Both outcomes are covered: (1) Adjacent APs on the same channel compete for airtime even when their signals do not overlap at layer 2. (2) RF quality and contention affect effective throughput beyond signal strength alone. Neither action is a substitute for the other.

Incorrect Answers

A:

The first step covers (1), but the second addresses select three nonoverlapping 20-MHz 2.4-GHz Wi-Fi channels in a common regulatory domain. These nominal 20-MHz channel centers reduce adjacent-channel overlap in 2.4 GHz. It leaves outcome (2) unfulfilled.

B:

The second step covers (2), but the first addresses enable inter-VLAN routing on a campus distribution device. SVIs terminate VLAN IP subnets while hardware routing forwards packets between VLANs. It leaves outcome (1) unfulfilled.

D:

Neither step is the requested pair: Use separate virtual routing and forwarding instances is for hold independent overlapping IP route tables on one router, and Use an intrusion prevention system with applicable inspection signatures is for identify malicious intrusion signatures in transit rather than simply filtering ports. VRFs logically isolate routing tables even when interfaces share one physical platform. The proposed plan misses the two stated outcomes.

Question 828

An acceptance check at Hillcrest Utilities has two requirements: (1) test IPv6 reachability through a routed path, and (2) display the IPv6 forwarding table on a Cisco router. Which plan correctly handles both requirements?

  1. First, use an IPv6 ping to the remote unicast endpoint; then use show ipv6 route.
  2. First, compare the available channel allocations in the regulatory domain; then keep tenant interfaces and route entries in isolated VRFs.
  3. First, deploy an access point connected to an appropriate switchport; then use show ipv6 route.
  4. First, use an IPv6 ping to the remote unicast endpoint; then make both link ends negotiate or explicitly agree on matching duplex.

Explanation

Correct Answer

A:

Both outcomes are covered: (1) An IPv6 echo exchange validates reachability across the IPv6 forwarding path. (2) The IPv6 routing table exposes connected, static and learned IPv6 destinations. Neither action is a substitute for the other.

Incorrect Answers

B:

Neither step is the requested pair: Compare the available channel allocations in the regulatory domain is for explain why 5-GHz Wi-Fi often supports more nonoverlapping channels than 2.4 GHz, and Keep tenant interfaces and route entries in isolated VRFs is for avoid importing a route automatically between customer tenant routing tables. The 5-GHz band typically offers more nonoverlapping usable channels, with DFS restrictions on some ranges. The proposed plan misses the two stated outcomes.

C:

The second step covers (2), but the first addresses provide wireless client association to a wired enterprise LAN. The AP bridges 802.11 client frames to the wired distribution system. It leaves outcome (1) unfulfilled.

D:

The first step covers (1), but the second addresses resolve an Ethernet link showing late collisions and duplex inconsistency. A full/half duplex mismatch creates errors and poor performance even if the link stays up. It leaves outcome (2) unfulfilled.

Question 829

A change request at Stonebridge Learning after migrating office users requires the team to protect an individual remote employee connecting from public Wi-Fi. Which response best meets this requirement?

  1. Match the PSK configured on the WLAN and clients
  2. Deploy an approved remote-access VPN client and headend
  3. Enable port-security sticky MAC learning
  4. Use authenticated local users or centralized AAA over SSH

Explanation

Correct Answer

B:

Remote access VPNs establish an encrypted session for an individual endpoint. This is the control that implements the specified requirement.

Incorrect Answers

A:

WPA2-Personal handshake succeeds only when both sides derive the same key material. That is not sufficient here: Remote access VPNs establish an encrypted session for an individual endpoint.

C:

Sticky learning converts learned secure MACs into addresses retained in running configuration. That is not sufficient here: Remote access VPNs establish an encrypted session for an individual endpoint.

D:

Per-user authenticated access supports accountability and avoids weak shared credentials. That is not sufficient here: Remote access VPNs establish an encrypted session for an individual endpoint.

Question 830

A change advisory for Cedarline Hotels has two requirements: (1) distinguish tagged VLAN 30 traffic from untagged native VLAN traffic on an 802.1Q trunk, and (2) separate finance endpoints from engineering devices at Layer 2. Which proposed plan satisfies both outcomes?

  1. First, recognize the 802.1Q VLAN ID in tagged Ethernet frames; then use HTTPS management instead of unencrypted HTTP.
  2. First, configure a trunk using 802.1Q with needed allowed VLANs; then use show interfaces trunk.
  3. First, recognize the 802.1Q VLAN ID in tagged Ethernet frames; then place access switchports in different VLANs.
  4. First, configure 802.1Q router subinterfaces with VLAN tags and gateway addresses; then place access switchports in different VLANs.

Explanation

Correct Answer

C:

Both outcomes are covered: (1) The VLAN identifier in the 802.1Q header preserves VLAN separation across shared trunks. (2) VLAN membership creates separate Layer 2 broadcast domains even on the same physical switch. Neither action is a substitute for the other.

Incorrect Answers

A:

The first step covers (1), but the second addresses secure browser-based device administration on a WLC. HTTPS uses TLS to protect management web sessions in transit. It leaves outcome (2) unfulfilled.

B:

Neither step is the requested pair: Configure a trunk using 802.1Q with needed allowed VLANs is for carry multiple VLANs between distribution and access switches, and Use show interfaces trunk is for confirm which VLANs are actively forwarded over a trunk. An 802.1Q trunk tags most VLAN frames so several VLANs can share one interswitch link. The proposed plan misses the two stated outcomes.

D:

The second step covers (2), but the first addresses route several VLANs using one router physical uplink. Router-on-a-stick separates VLAN traffic by subinterface over one physical trunk. It leaves outcome (1) unfulfilled.