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Home Cisco® 300-135

Cisco® 300-135 Exam Practice Questions (P. 1)

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Question #1
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.





PC2 in VLAN 200 is unable to ping the gateway address 172.16.200.1; identify the issue.
  1. A
    VTP domain name mismatch on SW4
  2. B
    VLAN 200 not configured on SW1
  3. C
    VLAN 200 not configured on SW2
  4. D
    VLAN 200 not configured on SW4

Correct Answer:
D
By looking at the configuration for SW2, we see that it is missing VLAN 200, and the "switchport access vlan 200" command is missing under interface eth 0/0:

Question #2
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.





Which of statement is true regarding STP issue identified with switches in the given topology?
  1. A
    Loopguard configured on the New_Switch places the ports in loop inconsistent state
  2. B
    Rootguard configured on SW1 places the ports in root inconsistent state
  3. C
    Bpduguard configured on the New_Switch places the access ports in error-disable
  4. D
    Rootguard configured on SW2 places the ports in root inconsistent state

Correct Answer:
A
On the new switch, we see that loopguard has been configured with the "spanning-tree guard loop" command.

The loop guard feature makes additional checks. If BPDUs are not received on a non-designated port, and loop guard is enabled, that port is moved into the STP loop-inconsistent blocking state, instead of the listening / learning / forwarding state. Without the loop guard feature, the port assumes the designated port role.
The port moves to the STP forwarding state and creates a loop.

Question #3
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.





You have configured PVST+ load balancing between SW1 and the New_Switch in such a way that both the links E2/2 and E2/3 are utilized for traffic flow, which component of the configuration is preventing PVST+ load balancing between SW1 and SW2 links
  1. A
    Port priority configuration on SW1
  2. B
    Port priority configuration on the New_Switch
  3. C
    Path cost configuration on SW1
  4. D
    Path cost configuration on the New_Switch

Correct Answer:
D
Here is the configuration found on the New_Switch:

This causes the port cost for link eth 1/3 to increase the path cost to 250 for all VLANs, making that link less preferred so that only eth 1/2 will be used.

Question #4
A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems.





Refer to the topology.
SW1 Switch Management IP address is not pingable from SW4. What could be the issue?
  1. A
    Management VLAN not allowed in the trunk links between SW1 and SW4
  2. B
    Management VLAN not allowed in the trunk links between SW1 and SW2
  3. C
    Management VLAN not allowed in the trunk link between SW2 and SW4
  4. D
    Management VLAN ip address on SW4 is configured in wrong subnet
  5. E
    Management VLAN interface is shutdown on SW4

Correct Answer:
D
In the network, VLAN 300 is called the Management VLAN. Based on the configurations shown below, SW1 has VLAN 300 configured with the IP address of
192.168.10.1/24, while on SW4 VLAN 300 has an IP address of 192.168.100.4/24, which is not in the same subnet.

Question #5
You have been brought in to troubleshoot an EIGRP network. A network engineer has made configuration changes to the network rendering some locations unreachable. You are to locate the problem and suggest solution to resolve the issue.





R5 has become partially isolated from the remainder of the network. R5 can reach devices on directly connected networks but nothing else. What is causing the problem?
  1. A
    An outbound distribute list in R3
  2. B
    Inbound distribute lists in R5
  3. C
    An outbound distribute list in R6
  4. D
    Incorrect EIGRP routing process ID in R5

Correct Answer:
B
Here we see that distribute list 3 has been applied to EIGRP on router R%, but access-list 3 contains only deny statements so this will effectively block all routing advertisements from its two EIGRP neighbors, thus isolating R5 from the rest of the EIGRP network:

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