2016NEW Cisco.CCIE.(400-101)EXAM] CCIE Routing and Switching EXAM A PART22 (501-520) VCE DUMPS FOR FREE DOWNLOAD WITH 100%PASS ENSURE

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QUESTION 501

Which two statements about class maps are true? (Choose two.)

A. As many as eight DSCP values can be included in a match dscp statement.

B. The default parameter on a class map with more than one match command is match-any.

C. The match class command can nest a class map within another class map.

D. A policy map can be used to designate a protocol within a class map.

Correct Answer: AC

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Answer A.

Reference.

http://www.cisco.com/c/en/us/td/docs/ios/12_2/qos/configuration/guide/fqos_c/qcfmcli2.html

QUESTION 502

Which IP SLA operation type is enhanced by the use of the IP SLAs Responder?

A. DNS

B. HTTP

C. ICMP Echo

D. UDP Echo

Correct Answer: D

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Figure 1. UDP Echo Operation

Response time (round-trip time) is computed by measuring the time taken between sending a UDP echo request message from Device B to the destination

device–Device A–and receiving a UDP echo reply from Device A. UDP echo accuracy is enhanced by using the IP SLAs Responder at Device A, the destination

Cisco device. If the destination device is a Cisco device, then IP SLAs sends a UDP datagram to any port number that you specified. Using the IP SLAs

Responder is optional for a UDP echo operation when using Cisco devices. The IP SLAs Responder cannot be configured on non-Cisco devices.Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt- book/sla_udp_echo.html

QUESTION 503

Refer to the exhibit.

Router 1 and Router 2 use HSRP to provide first hop redundancy for hosts on the 10.1.2.0/24 network.

Which feature can provide additional failover coverage for the PC?

A. Cisco Express Forwarding

B. NetFlow

C. Accounting

D. Enhanced Object Tracking

Correct Answer: D

Section: Infrastructure ServicesExplanation

Explanation/Reference:

Explanation:

HSRP has a mechanism for tracking the interface line-protocol state. The enhanced object tracking feature separates the tracking mechanism from HSRP. It

creates a separate, standalone tracking process that can be used by processes other than HSRP. This feature allows tracking of other objects in addition to the

interface line-protocol state. A client process, such as HSRP, can register an interest in tracking objects and request notification when the tracked object changes

state. Several clients can track the same object, and can take different actions when the object changes state. This feature increases the availability and speed of

recovery of a router system and decreases outages and outage duration.

Reference. http://www.cisco.com/c/en/us/td/docs/switches/blades/3040/software/release/12- 2_44_se/configuration/guide/swhsrp.html#wp1083927

QUESTION 504

Refer to the exhibit.

Which two possible network conditions can you infer from this configuration? (Choose two.)A. The authentication parameters on R1 and R2 are mismatched.

B. R1 is using the default NTP source configuration.

C. R1 and R2 have established an NTP session.

D. R2 is configured as the NTP master with a stratum of 7.

Correct Answer: AB

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Answer A. The NTP associations are not synced, it is only listed as a candidate because it was configured. Routing is not the issue, so it must be mismatched

authentication parameters.

Answer B. NTP sets the source IP address for all NTP packets based on the address of the interface through which the NTP packets are sent. You can configure

NTP to use a specific source IP address.

QUESTION 505

Which three message types are used for prefix delegation in DHCPv6? (Choose three.)

A. DHCP Discover

B. Renew

C. Solicit

D. DHCP Offer

E. Advertise

F. DHCP Ack

Correct Answer: BCE

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

DHCPv6 Message Types

For a client to get an IPv6 address successfully from a DHCPv6 server, the Client-Server Conversation happens using the following messages.

Lets look at each message types in detail:

SOLICIT

This is the first step in DHCPv6, where a DHCPv6 client sends a Solicit message to locate DHCPv6 servers.

ADVERTISE

Upon receiving a Solicit Message from the client, the DHCPv6 server sends an Advertise message to indicate that it is available for DHCP service, in response to

a Solicit message received from a client.

REQUEST

This message is sent by the DHCPv6 client.Client sends a Request message to request configuration parameters which includes IP addresses or delegated

prefixes, from a specific server.

CONFIRM

Confirm message is sent by the client to any available server in the network to confirm that the client is still on the same link or it has to be removed. This message

also confirms the IPv6 addresses that are assigned to the link are still valid. This could happen in case when a client detects a change in link-layer connectivity or

if the device is powered on and it is found that one or more leases are still valid. Note that only the prefix portion of the addresses are validated and not the actual

leases.

RENEW

A client sends a Renew message to the server when it wants to extend the lifetimes on the addresses and other configuration parameters assigned to the client

and also to update other configuration parameters.

REBIND

In case of No response from the DHCPv6 Server for the Renew message, the client sends a Rebind message to any available server to extend the lifetimes on the

address and to update other configuration parameters.

REPLY

A Reply message is sent by the DHCPv6 Server in response to a Solicit, Request, Renew, Rebind message received from a client. The reply message is sent by

the server in response to a confirm message (either confirming or denying) that the addresses assigned to the client are appropriate.In short the server

acknowledge receipt of a Release or Decline message by sending a REPLY message.

RELEASE

Release message as the name implies, is sent by the client to the server that has assigned the addresses, to indicate that the client will no longer use the

assigned addresses (one or more).

DECLINE

Client sends a Decline message to the DHCPv6 server to tell that the one or more addresses assigned by the server is already in use

RECONFIGURE

The Reconfigure Message is sent by the DHCPv6 server to the client when the server has new or updated information of configuration parameters. It tells the

client to initiate a information- request/reply message to the server so as to receive the updated information.

INFORMATION-REQUEST

Information-Request message is sent by the client to the server to update the configuration parametersReference. https://supportforums.cisco.com/blog/153426/implementing-dhcpv6-introduction

QUESTION 506

Which two statements about static NAT are true? (Choose two.)

A. An outside local address maps to the same outside global IP address.

B. An inside local address maps to a different inside global IP address.

C. An outside local address maps to a different outside global IP address.

D. An inside local address maps to the same inside global IP address.

Correct Answer: AD

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Example found at the reference link below:

Reference. http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/4606- 8.html

QUESTION 507

DRAG DROP

Drag and drop the NetFlow Export feature on the left to the NetFlow version that first supported it on the right.

Select and Place:

Correct Answer:

Section: Infrastructure Services

Explanation

Explanation/Reference:

QUESTION 508

Which two options are required parts of an EEM policy? (Choose two.)

A. event register keyword

B. bodyC. environment must defines

D. namespace import

E. entry status

F. exit status

Correct Answer: AB

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

EEM policies require two parts: the event register keyword and the body. The remaining parts of the policy are optional: environment must defines, namespace

import, entry status, and exit status (Figure 5).

Figure 5. EEM Policy Parts

Reference. http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-embedded- event-managereem/

config_guide_eem_configuration_for_cisco_integrated_services_router_platforms.html

QUESTION 509

Which two actions can you take to allow the greatest number of pertinent packets to be stored in the temporary buffer of Cisco IOS Embedded Packet Capture?

(Choose two.) A. Specify the sampling interval.

B. Specify the capture buffer type.

C. Specify a reflexive ACL.

D. Specify the minimum packet capture rate.

E. Specify the packet size.

F. Store the capture simultaneously onto an external memory card as the capture occurs.

Correct Answer: AB

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Embedded Packet Capture (EPC) provides an embedded systems management facility that helps in tracing and troubleshooting packets. This feature allows

network administrators to capture data packets flowing through, to, and from a Cisco device. The network administrator may define the capture buffer size and

type (circular, or linear) and the maximum number of bytes of each packet to capture. The packet capture rate can be throttled using further administrative

controls. For example, options allow for filtering the packets to be captured using an Access Control List and, optionally, further defined by specifying a maximum

packet capture rate or by specifying a sampling interval.

Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/epc/configuration/xe-3s/asr1000/epc- xe-3s-asr1000-book/nm-packet-capture-xe.html

QUESTION 510

Which statement describes Cisco PfR link groups?

A. Link groups enable Cisco PfR Fast Reroute when NetFlow is enabled on the external interfaces of the border routers.

B. Link groups define a strict or loose hop-by-hop path preference.

C. Link groups are required only when Cisco PfR is configured to load-balance all traffic.

D. Link groups are enabled automatically when Cisco PfR is in Fast Reroute mode.

E. Link groups set a preference for primary and fallback (backup) external exit interfaces.

Correct Answer: E

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

The Performance Routing – Link Groups feature introduced the ability to define a group of exit links as a preferred set of links, or a fallback set of links for PfR to

use when optimizing traffic classes specified in an PfR policy. PfR currently selects the best link for a traffic class based on the preferences specified in a policyand the traffic class performance–using parameters such as reachability, delay, loss, jitter or MOS–on a path out of the specified link.

Reference.

http://www.cisco.com/c/en/us/td/docs/ios/pfr/configuration/guide/15_1/pfr_15_1_book/pfr-link- group.html

QUESTION 511

Which two statements about NetFlow are true? (Choose two.)

A. It must be configured on each router in a network.

B. It supports ATM LAN emulation.

C. The existing network is unaware that NetFlow is running.

D. It uses SIP to establish sessions between neighbors.

E. It provides resource utilization accounting.

Correct Answer: CE

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

NetFlow identifies packet flows for both ingress and egress IP packets. It does not involve any connection-setup protocol, either between routers or to any other

networking device or end station. NetFlow does not require any change externally–either to the packets themselves or to any networking device. NetFlow is

completely transparent to the existing network, including end stations and application software and network devices like LAN switches. Also, NetFlow capture and

export are performed independently on each internetworking device; NetFlow need not be operational on each router in the network.

NetFlow data provides fine-grained metering for highly flexible and detailed resource utilization accounting. For example, flow data includes details such as IP

addresses, packet and byte counts, timestamps, type-of-service, and application ports. Service providers might utilize the information for billing based on time-ofday,

bandwidth usage, application usage, or quality of service. Enterprise customers might utilize the information for departmental chargeback or cost allocation for

resource utilization.

Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/netflow/configuration/12-4t/nf-12-4t- book/ios-netflow-ov.html

QUESTION 512

You are installing a new device to replace a device that failed. The configuration of the failed device is stored on a networked server, and the new device has an

RXBOOT image installed. Under which condition does the streamlined Setup mode fail?

A. The last four bits of the configuration register are not equal to the decimal value 0 or 1.

B. The startup configuration file was deleted.

C. Bit 6 is set in the configuration register.

D. The startup configuration is corrupt.Correct Answer: A

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The boot field determines if the router boots manually, from ROM, or from

Flash or the network. To change the boot field value and leave all other bits set to their default values, follow these guidelines:

· If you set the configuration register boot field value to 0x0, you must boot the operating system manually with the boot command.

· If you set the configuration register boot field value to 0x1, the router boots using the default ROM software.

· If you set the configuration register boot field to any value from 0x2 to 0xF, the router uses the boot field value to form a default boot filename for booting from

a network server.

For more information about the configuration register bit settings and default filenames, refer to the appropriate router hardware installation guide.

Reference.

http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ffun_r/frf010.html

QUESTION 513

Refer to the exhibit.

You are configuring the S1 switch for the switchport connecting to the client computer. Which option describes the effect of the command mls qos map cos-dscp 0

8 16 24 32 40 46 56?

A. Voice traffic is excluded from the default priority queue.

B. Voice packets are given a class selector of 5.

C. Video conferencing is marked CS3.D. Voice packets are processed in the priority queue.

Correct Answer: A

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

The default CoS to DSCP mappings are shown below:

In our example, we see that COS 6 is mapped to DSCP, not the default of DSCP 48 as shown above. DSCP 46 is Expedited Forwarding (EF), which is typically

used for voice traffic, and this value has not been included in this class map.

QUESTION 514

Refer to the exhibit.

If the network switch is configured as shown, which two statements about network traffic are true? (Choose two.)

A. Traffic enters the shaper on a FIFO basis.

B. Traffic enters the shaper on a weighted fair queueing basis.

C. Drop behavior is random for traffic in excess of 6 Mbps.

D. Voice traffic is given priority until it reaches 1.5 Mbps.

E. Voice traffic is given priority until it reaches 6 Mbps.Correct Answer: AD

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

A. Serial interfaces at E1 (2.048 Mbps) and below use weighted fair queueing (WFQ) by default. Other interfaces use first-in first-out (FIFO) by default.

D. Voice traffic is given priority up to 25% of the shape average value, which is 6000000, so 25% of 6 Mbps is 1.5 Mbps.

QUESTION 515

Which two options are two characteristics of the HSRPv6 protocol? (Choose two.)

A. It uses virtual MAC addresses 0005.73a0.0000 through 0005.73a0.0fff.

B. It uses UDP port number 2029.

C. It uses virtual MAC addresses 0005.73a0.0000 through 0005.73a0.ffff.

D. It uses UDP port number 2920.

E. If a link local IPv6 address is used, it must have a prefix.

Correct Answer: AB

Section: Infrastructure Services

Explanation

Explanation/Reference:

HSRP IPv6 Virtual MAC Address Range

HSRP IPv6 uses a different virtual MAC address block than does HSRP for IP:

0005.73A0.0000 through 0005.73A0.0FFF (4096 addresses)

HSRP IPv6 UDP Port Number

Port number 2029 has been assigned to HSRP IPv6.

Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-sy/fhp- 15-sy-book/HSRP-for-IPv6.html

QUESTION 516

Which statement about VRRP is true?

A. It supports load balancing.

B. It can be configured with HSRP on a switch or switch stack.

C. It supports IPv4 and IPv6.

D. It supports encrypted authentication.Correct Answer: B

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

VRRP Limitations

You can configure both HSRP and VRRP on a switch or switch stack. However, you cannot add a switch model that supports only one protocol to a stack that

is configured for both protocols.

The VRRP implementation on the switch does not support the MIB specified in RFC 2787.

The VRRP implementation on the switch supports only text -based authentication.

The switch supports VRRP only for IPv4.

Reference.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12- 2_58_se/configuration/guide/3750xscg/swhsrp.html#pgfId-1107127

QUESTION 517

Refer to the exhibit.

What is the polling frequency set by this configuration?

A. 60 seconds

B. 10 seconds

C. 360 seconds

D. 60 milliseconds

E. 10 milliseconds

Correct Answer: A

Section: Infrastructure Services

ExplanationExplanation/Reference:

Explanation:

The frequency value lists the polling interval, in seconds.

Reference. http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt- book/sla_icmp_echo.html

QUESTION 518

Refer to the exhibit.

Which additional information must you specify in this configuration to capture NetFlow traffic?

A. ingress or egress traffic

B. the number of cache entries

C. the flow cache active timeout

D. the flow cache inactive timeout

Correct Answer: A

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Configuring NetFlow

Perform the following task to enable NetFlow on an interface.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface type number

4. ip flow {ingress | egress}

5. exit

6. Repeat Steps 3 through 5 to enable NetFlow on other interfaces.7. end

8.

DETAILED STEPS

Reference.

http://www.cisco.com/c/en/us/td/docs/ios/netflow/configuration/guide/12_2sr/nf_12_2sr_book/cfg_ nflow_data_expt.html

QUESTION 519

For which three routing protocols can Cisco PfR provide direct route control? (Choose three.)

A. OSPF

B. ISIS

C. BGP

D. EIGRP

E. static routing

F. ODR

Correct Answer: CDE

Section: Infrastructure Services

Explanation

Explanation/Reference:

Explanation:

Q. Can you elaborate more on the Parent Route and why it’s so important to PfR?

A. Yes. For any route that PfR modifies or controls (BGP, Static, PIRO, EIGRP, PBR), having a Parent prefix in the routing table eliminates the possibility of a

routing loop occurring. This is naturally a good thing to prevent in routed networks.

Reference. http://docwiki.cisco.com/wiki/Performance_Routing_FAQs#Route_Control

QUESTION 520

DRAG DROP

Drag and drop the NAT operations on the left into the correct sequential order on the right.

Select and Place:

Section: Infrastructure Services

Explanation

Explanation/Reference:

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