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642-883 Vce

Refer to the Cisco IOS XR route policy exhibit.

Which two statements are correct? (Choose two.)
A. “test” and “foo” are references to the community sets.
B. The “match-any” option indicates matching either the standard community or extended community.
C. Routes that match both the “test” and “foo” conditions will have their local preference set to 20.
D. All non-matching routes will be permitted.

Correct Answer: AD Explanation Explanation/Reference:
When redistributing EIGRP routes into OSPF as type E2 external OSPF routes, what is the default OSPF seed metric?
A. Infinite
B. 0
C. 1
D. 10

E. 20 Correct Answer: E
Explanation Explanation/Reference:
Refer to the exhibit.

Which Cisco IOS XR configuration is missing to complete the configuration task of enabling BFD with only the OSPF peer over the gi0/3/0/1 interface in area 0?
A. bfd fast-detect also needs to be enabled globally under router ospf 100. RP/0/RSP0/CPU0:P1(config-ospf)#bfd fast-detect
B. bfd fast-detect also needs to be enabled for the OSPF area under area
0. RP/0/RSP0/CPU0:P1(config-ospf-ar)#bfd fast-detect
C. bfd fast-detect also needs to be enabled for the OSPF interface under area 0 interface gi0/3/0/1. RP/0/RSP0/CPU0:P1(config-ospf-ar-if)#bfd fast-detect
D. bfd fast-detect also needs to be enabled globally on the router. RP/0/RSP0/CPU0:P1(config#bfd fast-detect
E. bfd fast-detect also needs to be enabled on the gi0/3/0/1 interface under interface gi0/3/0/1. RP/0/RSP0/CPU0:P1(config-if)#bfd fast-detect

Correct Answer: C Explanation
Explanation: 70-412 vce
bfd fast-detect
To enable Bidirectional Forwarding Detection (BFD) to detect failures in the path between adjacent forwarding engines, use the bfd fast-detect command in the appropriate configuration mode. To return the software to the default state in which BFD is not enabled, use the no form of this command.
bfd fast-detect [disable | ipv4] no bfd fast-detect

642-883 Vce
Which high-availability routing feature requires the neighbor router to support the graceful restart capability?

Correct Answer: C Explanation
On Cisco IOS XR software, NSF minimizes the amount of time a network is unavailable to its users following a route processor (RP) failover. The main objective of NSF is to continue forwarding IP packets and perform a graceful restart following an RP failover.
When a router restarts, all routing peers of that device usually detect that the device went down and then came back up. This transition results in what is called a routing flap, which could spread across multiple routing domains. Routing flaps caused by routing restarts create routing instabilities, which are detrimental to the overall network performance. NSF helps to suppress routing flaps in NSF-aware devices, thus reducing network instability.
NSF allows for the forwarding of data packets to continue along known routes while the routing protocol information is being restored following an RP failover. When the NSF feature is configured, peer networking devices do not experience routing flaps. Data traffic is forwarded through intelligent line cards while the standby RP assumes control from the failed active RP during a failover. The ability of line cards to remain up through a failover and to be kept current with the Forwarding Information Base (FIB) on the active RP is key to NSF operation.
When the Cisco IOS XR router running IS-IS routing performs an RP failover, the router must perform two tasks to resynchronize its link-state database with its IS-IS neighbors. First, it must relearn the available IS-IS neighbors on the network without causing a reset of the neighbor relationship. Second, it must reacquire the contents of the link-state database for the network. The IS-IS NSF feature offers two options when configuring NSF: ·IETF NSF ·Cisco NSF
If neighbor routers on a network segment are NSF aware, meaning that neighbor routers are running a software version that supports the IETF Internet draft for router restartability, they assist an IETF NSF router that is restarting. With IETF NSF, neighbor routers provide adjacency and link-state information to help rebuild the routing information following a failover. In Cisco IOS XR software, Cisco NSF checkpoints (stores persistently) all the state necessary to recover from a restart without requiring any special cooperation from neighboring routers. The state is recovered from the neighboring routers, but only using the standard features of the IS-IS routing protocol. This capability makes Cisco NSF suitable for use in networks in which other routers have not used the IETF standard implementation of NSF
Which high-availability mechanism is a detection protocol that is enabled at the interface and at the routing protocol levels?

Correct Answer: D Explanation

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A. SNMP = A, FTP = D, TFTP = F, DNS = C, DHCP = B
B. SNMP = E, FTP = F, TFTP = D, DNS = A, DHCP = B
C. SNMP = A, FTP = F, TFTP = D, DNS =A, DHCP = C
D. SNMP = E, FTP = F, TFTP = D, DNS = C, DHCP = C

E. SNMP = A, FTP = D, TFTP = F, DNS = C, DHCP = B
Correct Answer: B
In the configuration of NAT, what does the keyword overload signify?
A. When bandwidth is insufficient, some hosts will not be allowed to access network translation.
B. The pool of IP addresses has been exhausted.
C. Multiple internal hosts will use one IP address to access external network resources.
D. If the number of available IP addresses is exceeded, excess traffic will use the specified address pool.

Correct Answer: C
What happens when computers on a private network attempt to connect to the Internet through a Cisco router running PAT?
A. The router uses the same IP address but a different TCP source port number for each connection.
B. An IP address is assigned based on the priority of the computer requesting the connection.
C. The router selects an address from a pool of one-to-one address mappings held in the lookup table.
D. The router assigns a unique IP address from a pool of legally registered addresses for the duration of the connection.

Correct Answer: A QUESTION 78
When configuring NAT, the Internet interface is considered to be what?
A. local
B. inside
C. global
D. outside

Correct Answer: D



The ip helper-address command does what?
A. assigns an IP address to a host
B. resolves an IP address from a DNS server
C. relays a DHCP request across networks
D. resolves an IP address overlapping issue

Correct Answer: C QUESTION 80
Refer to the exhibit.

The network administrator made the entries that are shown and then saved the configuration. From a console connection, what password or password sequence is required for the administrator to access privileged mode on Router1?
A. cisco
B. sanfran
C. sanjose
D. either cisco or sanfran
E. either cisco or sanjose
F. sanjose and sanfran

Correct Answer: B

A. 1 = E, 2 = D, 3 = C, 4 = F, 5 = B
B. 1 = C, 2 = F, 3 = E, 4 = D, 5 = B
C. 1 = C, 2 = D, 3 = E, 4 = F, 5 = A
D. 1 = B, 2 = D, 3 = E, 4 = F, 5 = A
E. 1 = C, 2 = D, 3 = E, 4 = F, 5 = B
Correct Answer: E
The following commands are entered on the router: Burbank(config)# enable secret fortress Burbank(config)# line con 0 Burbank(config-line)# login Burbank(config-line)# password n0way1n Burbank(config-line)# exit Burbank(config)# service password-encryption What is the purpose of the last command entered?
A. to require the user to enter an encrypted password during the login process
B. to prevent the vty, console, and enable passwords from being displayed in plain text in the configuration files
C. to encrypt the enable secret password
D. to provide login encryption services between hosts attached to the router
Correct Answer: B
What is the effect of using the service password-encryption command?
A. Only the enable password will be encrypted.
B. Only the enable secret password will be encrypted.
C. Only passwords configured after the command has been entered will be encrypted.
D. It will encrypt the secret password and remove the enable secret password from the configuration.
E. It will encrypt all current and future passwords.

Correct Answer: E

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What information should be utilized to identify network applications that are running on an existing network infrastructure?
A. customer information
B. existing documentation
C. traffic analysis
D. external feedback
E. user feedback Correct Answer: C QUESTION 2
What are two benefits of a structured IPv4 addressing scheme? (Choose two.)
A. reduces routing table size
B. provides increased security
C. allows for address translation to be performed
D. improves manageability and troubleshooting
E. increases high availability Correct Answer: AD QUESTION 3
Which IP address can be routed to cross the public Internet?
Correct Answer: C QUESTION 4
A dynamically routed private line and a statically routed IPsec tunnel connect two offices. What routing configuration prefers the IPsec tunnel only in the event of a private line failure?
A. floating static entry
B. EIGRP variance
C. bandwidth metric
D. OSPF maximum paths

Correct Answer: A QUESTION 5
Which interior routing protocol has the most preferable administrative distance by default?
Correct Answer: C QUESTION 6
You design a network with the following network addresses:
Which route address is the best summary of these network addresses?




E. Correct Answer: C QUESTION 7
What design requirement is necessary for campus network access layer switching?
A. high cost per port
B. high availability
C. high scalability
D. high performance
Correct Answer: C
In which phase of PPDIOO are the network requirements identified?
A. Design
B. Plan
C. Prepare
D. Implement
E. Operate
F. Optimize

Correct Answer: B
Which IPv6 feature enables routing to distribute connection requests to the nearest content server?
A. Link-local
B. Site-local
C. Anycast
D. Multicast
E. Global aggregatable
Correct Answer: C
Refer to the exhibit.

A network engineer at a technical call center receives a call from a customer complaining that only 56 kbps of data can be transferred over the T1 Frame Relay WAN circuit at a remote site. The engineer checks the Frame Relay switch and confirms that only 56 kbps is being transferred over the circuit. The engineer requests the router configuration of the customer headquarters site router. What is causing this issue to occur?
A. The wrong CIR is configured.
B. The BECN configuration is causing this issue.
C. The class name is spelled wrong under the interface.
D. The wrong DLCI number is assigned to the interface. Correct Answer: C QUESTION 11
Refer to the exhibit.

Which layer is the distribution layer?
A. Layer A
B. Layer B
C. Layer C
D. Layers A and B form a consolidated core and distribution layer

Correct Answer: B QUESTION 12
Refer to the exhibit.

Which configuration can be used to implement FHRP protocol and load balancing at the same time?
A. R1Interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 2 preemptstandby 2 ip 2 track serial 0standby 2 priority 95!!R2interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 1 priority 95standby 2 preemptstandby 2 ip 2 track serial 0
B. R1Interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 1 priority 95!!R2interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 1 priority 95
C. R1Interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 1 priority 95standby 2 preemptstandby 2 ip 2 track serial 0standby 2 priority 95!!R2interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 2 preemptstandby 2 ip 2 track serial 0
D. R1Interface Ethernet0ip address 1 preemptstandby 1 ip 1 track Serial0standby 1 priority 95!!R2interface Ethernet0ip address 1 preemptstandby 1 ip

Correct Answer: A
What two factors should be considered when deploying an enterprise campus network? (Choose two.)
A. employees
B. geography
C. applications
D. administration
E. throughput
Correct Answer: BC
Which network layer is the best fit for security features such as DAI and DHCP snooping?
A. campus core
B. enterprise edge
C. campus distribution
D. remote-access VPN
E. enterprise data center
F. campus access

Correct Answer: F
A network engineer requires that an OSPF ASBR must only flood external LSAs only within its own area. What OSPF area type should be configured?
A. Backbone Area
B. Totally Stub Area
C. Not So Stubby Area
D. Stub Area

Correct Answer: C
A network engineer requires that an OSPF ASBR must only flood external LSAs only within its own area. What OSPF area type should be configured?
A. Backbone Area
B. Totally Stub Area
C. Not So Stubby Area
D. Stub Area

Correct Answer: C
Which protocol is used to reserve bandwidth for the transport of a particular application data flow across the network?
B. IEEE 802.1P
E. Auto QOS
Correct Answer: C
An enterprise campus module is typically made up of four submodules, as described by the Cisco Enterprise Architecture Model. Which two submodules are part of this module? (Choose two.)
B. enterprise branch
C. building distribution
D. server farm/data center

Correct Answer: CD
You want to gather as much detail as possible during a network audit, to include data time stamping across a large number of interfaces, customized according to interface, with a minimal impact on the network devices themselves. Which tool would you use to meet these requirements?
C. NetFlow
D. Cisco Discovery Protocol
Correct Answer: C
Which design is the recommended geometric design for routed topologies?
A. linear
B. triangular
C. rectangular
D. circular
Correct Answer: B
Which statement is true concerning the data center access layer design?
A. The access layer in the data center is typically built at Layer 3, which allows for better sharing of services across multiple servers.
B. With Layer 2 access, the default gateway for the servers can be configured at the access or aggregation layer.
C. A dual-homing NIC requires a VLAN or trunk between the two access switches to support the dual IP addresses on the two server links to two separate switches.
D. The access layer is normally not required, as dual homing is standard from the servers to the aggregation layer.
Correct Answer: B

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