Regenerate Cisco 300-135 - An Overview 21 to 30

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Q21. - (Topic 14)

The implementations group has been using the test bed to do a ‘proof-of-concept' that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.

Use the supported commands to isolated the cause of this fault and answer the following questions.

What is the solution to the fault condition?

A. Disable auto summary on the EIGRP process

B. Enable EIGRP on the FastEthernet0/0 and FastEthernet0/1 interface using the no passive-interface command.

C. Change the AS number on the EIGRP routing process from 1 to 10 to much the AS number used on DSW1 and DSW2.

D. Under the EIGRP process, delete the network 10.1.4.0 0.0.0.255 command and enter the network 10.1.4.4 0.0.0.252 and 10.1.4.8 0.0.0.252 commands.

Answer: C

Explanation:

On R4, IPV4 EIGRP Routing, need to change the EIGRP AS number from 1 to 10 since DSW1 & DSW2 is configured to be in EIGRP AS number 10.

Q22. - (Topic 1)

Refer to the exhibit.

How would you confirm on R1 that load balancing is actually occurring on the default-network (0.0.0.0)?

A. Use ping and the show ip route command to confirm the timers for each default network resets to 0.

B. Load balancing does not occur over default networks; the second route will only be used for failover.

C. Use an extended ping along with repeated show ip route commands to confirm the gateway of last resort address toggles back and forth.

D. Use the traceroute command to an address that is not explicitly in the routing table.

Answer: D

Q23. - (Topic 13)

Use the supported commands to isolated the cause of this fault and answer the following questions.

On which device is the fault condition located?

A. R1

B. R2

C. R3

D. R4

E. DSW1

F. DSW2

G. ASW1

H. ASW2

Answer: D

Explanation:

On R4, in the redistribution of EIGRP routing protocol, we need to change name of route-map to resolve the issue. It references route-map OSPF_to_EIGRP but the actual route map is called OSPF->EIGRP.

Q24. - (Topic 19)

The implementation group has been using the test bed to do an IPv6 'proof-of-concept1. After several changes to the network addressing and routing schemes, a trouble ticket has been opened indicating that the loopback address on R1 (2026::111:1) is not able to ping the loopback address on DSW2 (2026::102:1).

Use the supported commands to isolate the cause of this fault and answer the following question.

On which device is the fault condition located?

A. R1

B. R2

C. R3

D. R4

E. DSW1

F. DSW2

G. ASW1

H. ASW2

Answer: B

Explanation:

Start to troubleshoot this by pinging the loopback IPv6 address of DSW2 (2026::102:1). This can be pinged from DSW1, R4, and R3, which leads us to believe that the issue is with R2. Going further, we can see that R2 only has an IPV6 OSPF neighbor of R1, not R3:

We can then see that OSPFv3 has not been enabled on the interface to R3:

So the problem is with R2, related to IPV6 Routing, and the fix is to enable the "ipv6 ospf 6 area 0" command under the serial 0/0/0.23 interface.

Q25. - (Topic 16)

The implementations group has been using the test bed to do a ‘proof-of-concept'. After several changes to the network addressing, routing schemes, a trouble ticket has been opened indicating that the loopback address on R1 (2026::111:1) is not able to ping the loopback address on DSW2(2026::102:1).

Use the supported commands to isolated the cause of this fault and answer the following questions.

What is the solution to fault condition?

A. Under the interface Serial 0/0/0.23 configuration enter the ipv6 ospf 6 area 0 command.

B. Under the interface Serial0/0/0.12 configuration enter the ipv6 ospf 6 area 12 command.

C. Under ipv6 router ospf 6 configuration enter the network 2026::1:/122 area 0 command.

D. Under ipv6 router ospf 6 configuration enter no passive-interface default command.

Answer: A

Explanation:

On R2, IPV6 OSPF routing, configuration is required to add ipv6 ospf 6 area 0 under interface serial 0/0/0.23

Q26. - (Topic 7)

Use the supported commands to isolated the cause of this fault and answer the following questions.

What is the solution to the fault condition?

A. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport mode access vlan 10 command.

B. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport access mode vlan 10 command.

C. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport vlan 10 access command.

D. In Configuration mode, using the interface range Fastethernet 1/0/1 – 2, then switchport access vlan 10 command.

Answer: D

Explanation:

The problem here is that VLAN 10 is not configured on the proper interfaces on switch ASW1.

Q27. - (Topic 18)

The implementations group has been using the test bed to do a ‘proof-of-concept' that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing schemes, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.

Use the supported commands to isolate the cause of this fault and answer the following question.

The fault condition is related to which technology?

A. NTP

B. IP DHCP Server

C. Ipv4 OSPF Routing

D. Ipv4 EIGRP Routing.

E. Ipv4 Route Redistribution.

F. Ipv6 RIP Routing

G. Ipv6 OSPF Routing

H. Ipv4 and Ipv6 Interoperability

I. Ipv4 layer 3 security.

Answer: B

Explanation:

On R4 the DHCP IP address is not allowed for network 10.2.1.0/24 which clearly shows the problem lies on R4 & the problem is with DHCP

Topic 19, Ticket 14: IPv6 Routing Issue 1

Topology Overview (Actual Troubleshooting lab design is for below network design)

-Client Should have IP 10.2.1.3

-EIGRP 100 is running between switch DSW1 & DSW2

-OSPF (Process ID 1) is running between R1, R2, R3, R4

-Network of OSPF is redistributed in EIGRP

-BGP 65001 is configured on R1 with Webserver cloud AS 65002

-HSRP is running between DSW1 & DSW2 Switches

The company has created the test bed shown in the layer 2 and layer 3 topology exhibits.

This network consists of four routers, two layer 3 switches and two layer 2 switches.

In the IPv4 layer 3 topology, R1, R2, R3, and R4 are running OSPF with an OSPF process number 1.

DSW1, DSW2 and R4 are running EIGRP with an AS of 10. Redistribution is enabled where necessary.

R1 is running a BGP AS with a number of 65001. This AS has an eBGP connection to AS 65002 in the ISP's network. Because the company's address space is in the private range.

R1 is also providing NAT translations between the inside (10.1.0.0/16 & 10.2.0.0/16) networks and outside (209.65.0.0/24) network.

ASW1 and ASW2 are layer 2 switches.

NTP is enabled on all devices with 209.65.200.226 serving as the master clock source.

The client workstations receive their IP address and default gateway via R4's DHCP server.

The default gateway address of 10.2.1.254 is the IP address of HSRP group 10 which is running on DSW1 and DSW2.

In the IPv6 layer 3 topology R1, R2, and R3 are running OSPFv3 with an OSPF process number 6.

DSW1, DSW2 and R4 are running RIPng process name RIP_ZONE.

The two IPv6 routing domains, OSPF 6 and RIPng are connected via GRE tunnel running over the underlying IPv4 OSPF domain. Redistrution is enabled where necessary.

Recently the implementation group has been using the test bed to do a ‘proof-of-concept' on several implementations. This involved changing the configuration on one or more of the devices.

You will be presented with a series of trouble tickets related to issues introduced during these configurations.

Note: Although trouble tickets have many similar fault indications, each ticket has its own issue and solution.

Each ticket has 3 sub questions that need to be answered & topology remains same.

Question-1 Fault is found on which device,

Question-2 Fault condition is related to,

Question-3 What exact problem is seen & what needs to be done for solution

===============================================================================

Q28. - (Topic 14)

Use the supported commands to isolated the cause of this fault and answer the following questions.

On which device is the fault condition located?

A. R1

B. R2

C. R3

D. R4

E. DSW1

F. DSW2

G. ASW1

H. ASW2

Answer: D

Explanation:

The EIGRP AS number configured on R4 is wrong.

Q29. - (Topic 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.

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

A. Port priority configuration on SW1

B. Port priority configuration on the New_Switch

C. Path cost configuration on SW1

D. Path cost configuration on the New_Switch

Answer: D

Explanation:

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.

Topic 3, Troubleshooting EIGRP

11. - (Topic 3)

Scenario:

You have been brought in to troubleshoot an EIGRP network. You have resolved the initial issue between routers R2 and R4, but another issue remains. You are to locate the problem and suggest solution to resolve the issue.

The customer has disabled access to the show running-config command.

The network segment between R2 and R4 has become disconnected from the remainder of the network. How should this issue be resolved?

A. Change the autonomous system number in the remainder of the network to be consistent with R2 and R4.

B. Move the 192.168.24.0 network to the EIGRP 1 routing process in R2 and R4.

C. Enable the R2 and R4 router interfaces connected to the 192.168.24.0 network.

D. Remove the distribute-list command from the EIGRP 200 routing process in R2.

E. Remove the distribute-list command from the EIGRP 100 routing process in R2.

Answer: B

Explanation:

When issuing the "show ip eigrp neighbor" command (which is about the only command that it lets you do in this question) you will see that all other routers are configured for EIGRP AS 1. However, the 192.16824.0 network between R2 and R4 is incorrectly configured for EIGRP AS 100:

Q30. - (Topic 1)

Which statement is true about an IPsec/GRE tunnel?

A. The GRE tunnel source and destination addresses are specified within the IPsec transform set.

B. An IPsec/GRE tunnel must use IPsec tunnel mode.

C. GRE encapsulation occurs before the IPsec encryption process.

D. Crypto map ACL is not needed to match which traffic will be protected.

Answer: C

Topic 2, Troubleshooting VTP

7. - (Topic 2)

PC2 in VLAN 200 is unable to ping the gateway address 172.16.200.1; identify the issue.

A. VTP domain name mismatch on SW4

B. VLAN 200 not configured on SW1

C. VLAN 200 not configured on SW2

D. VLAN 200 not configured on SW4

Answer: C

Explanation:

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:

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