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Q1. - (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. 

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 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 

Q2. - (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. 

Q3. - (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) 

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. 

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 

Q4. - (Topic 8) 

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. 

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: A 

Explanation: 

On R1, for IPV4 authentication of OSPF the command is missing and required to configure------ ip ospf authentication message-digest 

Q5. - (Topic 8) 

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. 

The fault condition is related to which technology? 

A. BGP 

B. NTP 

C. IP NAT 

D. IPv4 OSPF Routing 

E. IPv4 OSPF Redistribution 

F. IPv6 OSPF Routing 

G. IPv4 layer 3 security 

Answer: D 

Explanation: 

On R1, for IPV4 authentication of OSPF the command is missing and required to configure------ ip ospf authentication message-digest 

Q6. - (Topic 6) 

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, and FHRP services, 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. In Configuration mode, using the interface port-channel 13 command, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 20,200 commands. 

B. In Configuration mode, using the interface port-channel 13, port-channel 23, then configure switchport trunk none allowed vlan none followed by switchport trunk allowed vlan 10,200 commands. 

C. In Configuration mode, using the interface port-channel 23 command, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 20,200 commands. 

D. In Configuration mode, using the interface port-channel 23, port-channel, then configure switchport trunk allowed vlan none followed by switchport trunk allowed vlan 10,20,200 commands. 

Answer: B 

Explanation: 

We need to allow VLANs 10 and 200 on the trunks to restore full connectivity. This can be accomplished by issuing the "switchport trunk allowed vlan 10,200" command on the port channels used as trunks in DSW1. 

Q7. - (Topic 6) 

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, and FHRP services, a trouble ticket has been operated 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. 

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: G 

Explanation: 

Since the Clients are getting an APIPA we know that DHCP is not working. However, upon closer examination of the ASW1 configuration we can see that the problem is not with DHCP, but the fact that the trunks on the port channels are only allowing VLANs 1-9, when the clients belong to VLAN 10. VLAN 10 is not traversing the trunk on ASW1, so the problem is with the trunk configuration on ASW1. 

Q8. - (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.

Q9. - (Topic 13) 

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. 

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. 

Q10. - (Topic 4) 

Scenario: 

You have been asked by your customer to help resolve issues in their routed network. Their network engineer has deployed HSRP. On closer inspection HSRP doesn't appear to be operating properly and it appears there are other network problems as well. You are to provide solutions to all the network problems. 

Examine the configuration on R5. Router R5 do not see any route entries learned from R4; what could be the issue? 

A. HSRP issue between R5 and R4 

B. There is an OSPF issue between R5and R4 

C. There is a DHCP issue between R5 and R4 

D. The distribute-list configured on R5 is blocking route entries 

E. The ACL configured on R5 is blocking traffic for the subnets advertised from R4. 

Answer: B 

Explanation: 

If we issue the "show ip route" and "show ip ospf neighbor" commands on R5, we see that there are no learned OSPF routes and he has no OSPF neighbors.