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Q11. Which statement is true about the PPP Session Phase of PPPoE?
A. PPP options are negotiated and authentication is not performed. Once the link setup is completed, PPPoE functions as a Layer 3 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.
B. PPP options are not negotiated and authentication is performed. Once the link setup is completed, PPPoE functions as a Layer 4 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.
C. PPP options are automatically enabled and authorization is performed. Once the link setup is completed, PPPoE functions as a Layer 2 encapsulation method that allows data to be encrypted over the PPP link within PPPoE headers.
D. PPP options are negotiated and authentication is performed. Once the link setup is completed, PPPoE functions as a Layer 2 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.
Answer: D
Explanation:
PPPoE is composed of two main phases:
Active Discovery Phase--In this phase, the PPPoE client locates a PPPoE server, called an access concentrator. During this phase, a Session ID is assigned and the PPPoE layer is established.
PPP Session Phase--In this phase, PPP options are negotiated and authentication is performed. Once the
link setup is completed, PPPoE functions as a Layer 2 encapsulation method, allowing data to be transferred over the PPP link within PPPoE headers.
Reference:
http://www.cisco.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asa-vpn- cli/vpnpppoe.html
Q12. CORRECT TEXT
You are a network engineer with ROUTE.com, a small IT company. ROUTE.com has two connections to the Internet; one via a frame relay link and one via an EoMPLS link. IT policy requires that all outbound HTTP traffic use the frame relay link when it is available. All other traffic may use either link. No static or default routing is allowed.
Choose and configure the appropriate path selection feature to accomplish this task. You may use the Test Workstation to generate HTTP traffic to validate your solution.
Answer: We need to configure policy based routing to send specific traffic along a path that is different from the best path in the routing table. Here are the step by Step Solution for this:
1) First create the access list that catches the HTTP traffic: R1(config)#access-list 101 permit tcp any any eq www
2) Configure the route map that sets the next hop address to be ISP1 and permits the rest of the traffic: R1(config)#route-map pbr permit 10
R1(config-route-map)#match ip address 101
R1(config-route-map)#set ip next-hop 10.1.100.2
R1(config-route-map)#exit
R1(config)#route-map pbr permit 20
3) Apply the route-map on the interface to the server in the EIGRP Network:
R1(config-route-map)#exit
R1(config)#int fa0/1
R1(config-if)#ip policy route-map pbr
R1(config-if)#exit
R1(config)#exit
Explanation:
First you need to configure access list to HTTP traffic and then configure that access list. After that configure the route map and then apply it on the interface to the server in EIGRP network.
Q13. Scenario:
You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. The customer has disabled your access to the show running-config command.
How old is the Type 4 LSA from Router 3 for area 1 on the router R5 based on the output you have examined?
A. 1858
B. 1601
C. 600
D. 1569
Answer: A
Explanation:
Q14. Which common issue causes intermittent DMVPN tunnel flaps?
A. a routing neighbor reachability issue
B. a suboptimal routing table
C. interface bandwidth congestion
D. that the GRE tunnel to hub router is not encrypted
Answer: A
Explanation:
DMVPN Tunnel Flaps Intermittently Problem DMVPN tunnel flaps intermittently. Solution
When DMVPN tunnels flap, check the neighborship between the routers as issues with neighborship
formation between routers may cause the DMVPN tunnel to flap. In order to resolve this problem, make
sure the neighborship between the routers is always up. Reference: http://www.cisco.com/c/en/us/support/
docs/security-vpn/ipsec-negotiation-ike- protocols/29240-dcmvpn.html#Prblm1
Q15. A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows, as an alternative to powering down the active router and letting the network respond accordingly. Which action will allow for manual switching of HSRP nodes?
A. Track the up/down state of a loopback interface and shut down this interface during maintenance.
B. Adjust the HSRP priority without the use of preemption.
C. Disable and enable all active interfaces on the active HSRP node.
D. Enable HSRPv2 under global configuration, which allows for maintenance mode.
Answer: A
Explanation:
The standby track command allows you to specify another interface on the router for the
HSRP process to monitor in order to alter the HSRP priority for a given group. If the line protocol of the
specified interface goes down, the HSRP priority is reduced. This means that another HSRP router with
higher priority can become the active router if that router has standby preempt enabled. Loopback
interfaces can be tracked, so when this interface is shut down the HSRP priority for that router will be
lowered and the other HSRP router will then become the active one. Reference: http://www.cisco.com/c/
en/us/support/docs/ip/hot-standby-router-protocol- hsrp/13780-6.html
Q16. What is the result of the command ip flow-export destination 10.10.10.1 5858?
A. It configures the router to export cache flow information to IP 10.10.10.1 on port UDP/5858.
B. It configures the router to export cache flow information about flows with destination IP 10.10.10.1 and port UDP/5858.
C. It configures the router to receive cache flow information from IP 10.10.10.1 on port UDP/5858.
D. It configures the router to receive cache flow information about flows with destination IP 10.10.10.1 and port UDP/5858.
Answer: A
Explanation:
To enable the exporting of information in NetFlow cache entries, use the ip flow-export destination
command in global configuration mode.
Syntax Description
ip- IP address of the workstation to which you want to send the address NetFlow information.
udp-port UDP protocol-specific port number.
Reference:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/12s_mdnf.html#wp1023091
Q17. CORRECT TEXT
You are a network engineer with ROUTE.com, a small IT company. They have recently merged two organizations and now need to merge their networks as shown in the topology exhibit. One network is using OSPF as its IGP and the other is using EIGRP as its IGP. R4 has been added to the existing OSPF network to provide the interconnect between the OSPF and EIGRP networks. Two links have been added that will provide redundancy.
The network requirements state that you must be able to ping and telnet from loopback 101 on R1 to the OPSF domain test address of 172.16.1.100. All traffic must use the shortest path that provides the greatest bandwidth. The redundant paths from the OSPF network to the EIGRP network must be available in case of a link failure. No static or default routing is allowed in either network.
A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing. You have been tasked with completing the implementation and ensuring that the network requirements are met. You may not remove or change any of the configuration commands currently on any of the routers. You may add new commands or change default values.
Answer: First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU) of the s0/0/0 interface (the interface of R2 connected to R4) for redistribution:
R2#show interface s0/0/0
Write down these 5 parameters, notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. For example, we get Bandwidth=1544 Kbit, Delay=20000 us, Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows:
R2#config terminal
R2(config)# router ospf 1
R2(config-router)# redistribute eigrp 100 metric-type 1 subnets
R2(config-router)#exit
R2(config-router)#router eigrp 100
R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500
Note: In fact, these parameters are just used for reference and we can use other parameters with
no problem.
If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000)
For R3 we use the show interface fa0/0 to get 5 parameters too
R3#show interface fa0/0
For example we get Bandwidth=10000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500 bytes
R3#config terminal
R3(config)#router ospf 1
R3(config-router)#redistribute eigrp 100 metric-type 1 subnets
R3(config)#exit
R3(config-router)#router eigrp 100
R3(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500
Finally you should try to “show ip route” to see the 172.16.100.1 network (the network behind R4)
in the routing table of R1 and make a ping from R1 to this network.
Note: If the link between R2 and R3 is FastEthernet link, we must put the command below under
EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4), which is better
than R1 -> R2 -> R4.
R2(config-router)# distance eigrp 90 105
This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP external routes to 105, which is smaller than the Administrative Distance of OSPF (110) -> the link between R2 & R3 will be preferred to the serial link between R2 & R4. Note: The actual OPSF and EIGRP process numbers may change in the actual exam so be sure to use the actual correct values, but the overall solution is the same.
Q18. Which prefix is matched by the command ip prefix-list name permit 10.8.0.0/16 ge 24 le 24?
A. 10.9.1.0/24
B. 10.8.0.0/24
C. 10.8.0.0/16
D. 10.8.0.0/23
Answer: B
Explanation:
With prefix lists, the ge 24 term means greater than or equal to a /24 and the le 24 means less than or
equal to /24, so only a /24 is both greater than or equal to 24 and less than or equal to 24. This translate to any prefix in the 10.8.x.0/24 network, where X is any value in the 0-255 range.
Only the choice of 10.8.0.0.24 matches this.
Q19. A router receives a routing advertisement for the same prefix and subnet from four different routing protocols. Which advertisement is installed in the routing table?
A. RIP
B. OSPF
C. iBGP
D. EIGRP
Answer: D
Explanation:
Q20. Which two functions are completely independent when implementing NAT64 over NAT-PT? (Choose two.)
A. DNS
B. NAT
C. port redirection
D. stateless translation
E. session handling
Answer: A,B
Explanation:
Network Address Translation IPv6 to IPv4, or NAT64, technology facilitates communication
between IPv6-only and IPv4-only hosts and networks (whether in a transit, an access, or an edge
network). This solution allows both enterprises and ISPs to accelerate IPv6 adoption while simultaneously
handling IPv4 address depletion. The DNS64 and NAT64 functions are completely separated, which is
essential to the superiority of NAT64 over NAT-PT. Reference: http:// www.cisco.com/c/en/us/products/
collateral/ios-nx-os-software/enterprise-ipv6- solution/white_paper_c11-676278.html
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