Pass4Test에서 Cisco CCIE 400-101덤프를 구입하시면 퍼펙트한 구매후 서비스를 제공해드립니다.Cisco CCIE 400-101덤프가 업데이트되면 업데이트된 최신버전을 무료로 서비스로 드립니다. Cisco CCIE 400-101시험에서 불합격성적표를 받으시면 덤프구매시 지불한 덤프비용은 환불해드립니다.

 

NO.1 Which statement describes the native VLAN concept in an ISL trunk?

A. It is the VLAN ID that is assigned to untagged packets.

B. It is the VLAN with highest priority.

C. It is the default VLAN for a trunk.

D. There is no native VLAN concept in an ISL trunk.

Answer: D

Explanation:

ISL has no native VLAN concept because it places the entire ethernet frame in the payload of an ISL

frame. Native VLANs is an 802.1Q specific concept

 

NO.2 Which option describes what the default RT filter indicates when you implement the BGP RT

constrained route distribution feature?

A. A peer receives only a default route for each VRF.

B. A peer receives all routes, regardless of the RT value.

C. A peer receives routes only for RTs that are used on that router.

D. A peer receives no routes, regardless of the RT value.

Answer: B

 

NO.3 Which statement about the BGP originator ID is true?

A. The route reflector always sets the originator ID to its own router ID.

B. The route reflector sets the originator ID to the router ID of the route reflector client that injects

the route into the AS.

C. The route reflector client that injects the route into the AS sets the originator ID to its own router

ID.

D. The originator ID is set to match the cluster ID.

Answer: B

Explanation:

An RR reflecting the route received from a RR-Client adds:

Reference. https://sites.google.com/site/amitsciscozone/home/bgp/bgp-route-reflectors

 

NO.4 Refer to the exhibit.

What is the meaning of the asterisk (*) in the output?

A. PIM neighbor 10.1.5.6 is the RPF neighbor for the group 232.1.1.1 for the shared tree.

B. PIM neighbor 10.1.5.6 is the one that is seen as the RPF neighbor when performing the command

show ip rpf 10.1.4.7.

C. PIM neighbor 10.1.5.6 is the winner of an assert mechanism.

D. The RPF neighbor 10.1.5.6 is invalid.

Answer: C

Explanation:

show ip mroute Field Descriptions Field Description

RPF neighbor or RPF nbr IP address of the upstream router to the source. Tunneling indicates that

this router is sending data to the RP encapsulated in register packets. The hexadecimal number in

parentheses indicates to which RP it is registering. Each bit indicates a different RP if multiple RPs per

group are used. If an asterisk (*) appears after the IP address in this field, the RPF neighbor has been

learned through an assert. Reference.

http://www.cisco.com/c/en/us/td/docs/ios/12_2/ipmulti/command/reference/fiprmc_r/1rfmult3.ht

ml

 

NO.5 Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging

process from the default 300 seconds to the current forward delay value?

A. topology change bit

B. topology change acknowledgment bit

C. priority bit

D. max-age bit

Answer: A

Explanation:

The Root Bridge continues to set the Topology Change flag (TCN bit) in all Configuration BPDUs that it

sends out for a total of Forward Delay + Max Age seconds (default = 35 (20+15) seconds). This flag

instructs all bridges to shorten their MAC address table (Bridge table) aging process from the default

value of 300 seconds to the current Forward Delay value of the bridge (default=15 seconds). The TCA

flag is set by the upstream bridge to tell the downstream bridges to stop sending TCN BPDUs. The TC

flag is set in configuration BPDU by the Root Bridge to shorten the bridge table age-out period from

default 300 seconds to Forward Delay seconds.

 

NO.6 What is the purpose of Route Target Constraint?

A. to avoid using route reflectors in MPLS VPN networks

B. to avoid using multiple route distinguishers per VPN in MPLS VPN networks

C. to be able to implement VPLS with BGP signaling

D. to avoid sending unnecessary BGP VPNv4 or VPNv6 updates to the PE router

E. to avoid BGP having to perform route refreshes

Answer: D

Explanation:

Some service providers have a very large number of routing updates being sent from RRs to PEs,

using considerable resources. A PE does not need routing updates for VRFs that are not on the

PE; therefore, the PE determines that many routing updates it receives are "unwanted." The PE

can filter out the unwanted updates using Route Target Constraint.

Reference.

http://www.cisco.com/c/en/us/td/docs/ios/ios_xe/iproute_bgp/configuration/guide/2_xe/irg_xe_bo

ok

/irg_rt_filter_xe.html.

 

NO.7 Into which two pieces of information does the LISP protocol split the device identity? (Choose

two.)

A. Routing Locator

B. Endpoint Identifier

C. Resource Location

D. Enterprise Identifier

E. LISP ID

F. Device ID

Answer: A,B

 

NO.8 Refer to the exhibit.

Which two statements about the implementation are true? (Choose two.)

A. The PPP multilink protocol header is omitted on delay-sensitive packets.

B. The maximum number of fragments is 1.

C. Small real-time packets are multilink-encapsulated.

D. A transmit queue is provided for smaller packets.

Answer: A,D

Explanation:

Previous implementations of Cisco IOS Multilink PPP (MLP) include support for Link Fragmentation

Interleaving (LFI). This feature allows the delivery of delay-sensitive packets, such as the packets of a

Voice call, to be expedited by omitting the PPP Multilink Protocol header and sending the packets as

raw PPP packets in between the fragments of larger data packets. This feature works well on bundles

consisting of a single link. However, when the bundle contains multiple links there is no way to keep

the interleaved packets in sequence with respect to each other. The Multiclass Multilink PPP (MCMP)

feature in Cisco IOS Release 12.2(13)T addresses the limitations of MLP LFI on bundles containing

multiple links by introducing multiple data classes. With multiclass multilink PPP interleaving, large

packets can be multilink-encapsulated and fragmented into smaller packets to satisfy the delay

requirements of real-time voice traffic; small real-time packets, which are not multilink encapsulated,

are transmitted between fragments of the large packets. The interleaving feature also provides a

special transmit queue for the smaller, delay-sensitive packets, enabling them to be transmitted

earlier than other flows. Interleaving provides the delay bounds for delay-sensitive voice packets on a

slow link that is used for other best-effort traffic. References:

http://www.cisco.com/c/en/us/td/docs/ios/dial/configuration/guide/12_4t/dia_12_4t_book/dia_mu

ltic lass_link_ppp.pdf

http://www.cisco.com/c/en/us/td/docs/routers/access/500/520/software/configuration/guide/520_

S CG_Book/520scg_concepts.html