640-875 SPNGN1 Online Test-Building Cisco Service Provider Next-Generation Networks, Part 1

Currently, our 640-875 SPNGN1 online test only provide 20 questions. Answer one question correctly, you can get 5 points. The content of these questions are the latest exam content. Please feel free to test your skill level.

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Now, begin to test:

Which two applications require the network to have the least amount of jitter, delay, and packet loss? (Choose two.)

FTP

SSH

VoIP

Cisco TelePresence

web browsing

What is the default spanning-tree mode of an NNI port on a Cisco ME3400 switch?

multiple spanning tree (mst)

per-vlan rapid spanning tree (rapid-pvst)

per-vlan spanning tree (pvst)

IEEE 802.1D (stp)

Which two statements about transparent bridging operations are true? (Choose two.)

A bridge builds its MAC address table dynamically using the spanning-tree protocol.

A bridge operates at the data link layer.

A bridge sends unknown unicast frames out on all ports except the incoming port.

A bridge forwards traffic based on the destination IP address.

All the ports on the bridge belong to the same collision domain.

Which two statements about classful or classless routing protocol operations are true? (Choose two.)

Classful routing protocols do not send subnet mask information with their routing updates.

Variable-length subnet masks are supported when using classful routing protocols.

Examples of classless routing protocols include RIPv1, EIGRP, OSPF, and IS-IS.

Classful routing protocols do not support discontiguous subnets.

When two or more different routes exist to the same destination that have been learned from two different routing protocols, what does a router use to determine the best route?

routing protocol metric

administrative distance

hop count

path cost

local preference

Which Cisco IOS XR CLI command displays the running state of each line card (including the fan tray) on the Cisco ASR 9000 Series Router?

RP/0/RSP0/CPU0:PE1#show platform

RP/0/RSP0/CPU0:PE1 (admin)#show platform

RP/0/RSP0/CPU0:PE1#show hw-module fpd location all

RP/0/RSP0/CPU0:PE1 (admin)#show hw-module fpd location all

RP/0/RSP0/CPU0:PE1#show version

RP/0/RSP0/CPU0:PE1 (admin)#show version

Which Cisco IOS XR CLI command can you use to determine if the firmware on any of the line cards on the Cisco ASR 9000 Series Router needs to be upgraded?

RP/0/RSP0/CPU0:PE1#show platform

RP/0/RSP0/CPU0:PE1 (admin) #show platform

RP/0/RSP0/CPU0:PE1#show hw-module fpd location all

RP/0/RSP0/CPU0:PE1#show version

RP/0/RSP0/CPU0:PE1 (admin) #show version

RP/0/RSP0/CPU0:PE1#show install active

Which Cisco IOS CLI command is used to verify the speed and duplex settings on the Fa0/1 port on a Cisco switch?

show ip interfaces fa0/1

show interfaces fa0/1

show interfaces fa0/1 switchport

show ip interfaces brief

show interfaces switchport

Which three statements about Cisco Discovery Protocol operations on a Cisco ME3400 switch are true? (Choose three.)

Cisco Discovery Protocol is enabled by default on NNI ports.

Cisco Discovery Protocol is enabled by default on all NNI, ENI, and UNI ports.

Cisco Discovery Protocol is disabled by default on ENI ports.

Cisco Discovery Protocol is not supported on NNI or ENI ports.

Cisco Discovery Protocol is not supported on UNI ports.

Currently, a Cisco IOS XR router is configured to send IP SLA probes to a network management station that is acting as the IP SLA target device. How can IP SLA measurement accuracy be improved and also provide additional statistics?

Use ICMP echo probes instead of UDP echo probes.

Configure another Cisco router as the target and enable that other Cisco router for IP SLA Responder operations.

Increase the rate (frequency) at which a specified IP SLA operation is sent into the network.

Use UDP echo probes instead of ICMP echo probes and enable UDP echo service on the target network management station.

Enable IP SLA Responder service on the target network management station

Which two statements about NetFlow support on Cisco IOS XR are true? (Choose two.)

Cisco IOS XR supports NetFlow version 9 export format only.

NetFlow version 9 is a flexible and extensible means to carry NetFlow records from a network node to a collector.

IP flow is based on a set of four parameters only (source IP address, destination IP address, source port, and destination port).

A NetFlow flow is the bidirectional sequence of packets on a single interface.

What are the four steps to enable SSH v1 and v2 server on Cisco IOS XR routers? (Choose four.)

Configure a host name.

Configure a domain name.

Generate a crypto key pair.

Import the router identity certificate and the CA root certificate to the router.

Configure an ISAKMP policy.

Bring up an SSH server using the ssh server command.

Generally, which way is the fastest to open S3 and S4 service requests to the Cisco TAC?

Use the Smart Call Home feature.

Use the online TAC Service Request Tool.

Call Cisco TAC on the phone.

Email Cisco TAC with a high-priority email.

Export the related Syslog/NetFlow information to TAC directly.

Which two statements about Cisco IOS XR NTP configuration are true? (Choose two.)

A network device can obtain NTP time information in three ways: polling the NTP server, listening to NTP broadcasts, and listening to NTP multicasts.

NTP authentication supports MD5, SHA1, or SHA2.

Client mode is a peer-to-peer mode.

The two types of poll-based NTP associations are client mode and symmetric active mode.

The Cisco IOS-XR implementation of NTP supports stratum 1 service.

In client mode, clients can dynamically learn the NTP sever IP address by listening to the NTP server broadcasts or multicasts.

Which SNMPv2/SNMPv3 operation is not supported in Cisco IOS XR software?

get-bulk

get-request

inform

trap

set-request

Which three statements about the Cisco IOS XR task-based user authorization method are true? (Choose three.)

A user’s association with a particular user group links that user to a particular set of task IDs. A user that is associated with a task ID can execute any operation associated with that task ID.

Users can be assigned only to one user group.

Every user group is associated with one or more task groups.

Every task group is defined by a set of task IDs.

Each user is assigned a privilege level.

Each IOS XR CLI command is assigned a privilege level.

A task ID maps the IOS XR command to a privilege level.

Which three statements about Cisco IOS XR CLI operations are true? (Choose three.)

Cisco IOS XR uses a three-stage configuration method.

Committed changes are persistent across reboots in Cisco IOS XR.

The commit replace global configuration command replaces the contents of the running configuration with the target configuration.

The save global configuration command saves the contents of target configuration to the running configuration.

There is no concept of a startup-config in Cisco IOS XR.

The clear global configuration command erases the entire current running configuration.

The show running-config global configuration command displays the configuration that occurs if the contents of the uncommitted changed (target configuration) are committed to the running configuration.

What is the result of using the Cisco IOS copy tftp: run command?

The running configuration on the Cisco IOS device is backed up to the TFTP server.

Only new configuration parameters from the saved configuration file on the TFTP server are added to the running configuration. No changes to any existing configuration parameters in the running configuration are made.

The running configuration on the Cisco IOS device is replaced with the saved configuration file on the TFTP server.

The configuration stored in the TFTP server is merged with the running configuration on the Cisco IOS device.

The saved configuration file from the TFTP server is copied to the target configuration.

Which component is integrated into the Cisco IPoDWDM interfaces?

ROADM

transponder

electrical cross connect

E-O-E converter

SONET/SDH controller

What is the SDH equivalent of the SONET STS-12 framing format?

SDH STM-1

SDH STM-4

SDH STM-12

SDH STM-16

SDH STM-64

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640-875 SPNGN1 Online Test-Building Cisco Service Provider Next-Generation Networks, Part 1

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