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CCIE R&S 400-101 Written Exam Solutions Discussion

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347 Q are valid I appeared today and Al-Hum-Du-lilah i cleared , only thing is please verify the answers for all the question because in the dumps there are some questions which do not have answer correct .

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below is link for 347Q

 

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Edited by JAID

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Where can I find 347 Q?

 

 

below is link for 347Q

 

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347 Q are valid I appeared today and Al-Hum-Du-lilah i cleared , only thing is please verify the answers for all the question because in the dumps there are some questions which do not have answer correct .

 

what are the questions you feel answers are not correct ? do you have corrected ones?

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Check the Last Page of this thread also there are already mentioned some questions , for the others i would advice use this as a reference for question and find the answer your self through cisco press ,

 

 

Which two statements about route summarization are true

  • EIGRP le arned routes are automatically summarized
    B. Routes are automatically summarized to their classful boundary with OSPF
    C. When a packet is routed to a destination, the router chooses the most specific prefix from the routing table
    D. It is recommended for use on discontiguous networks
    E. BGP sends both specific and aggregate routes unless the keyword "summary-only" i:s configured
    Answer: CE or AC
     
    which one is true ?

 

 

Correct will be CE

 

 

When the BGP additional-paths feature is used, what allows a BGP speaker to differentiate between the different available paths?

A. The remote BGP peer prepends its own next-hop address to the prefix.

B. A unique path identifier is encoded into a dedicated field to the NLR I.

C. A route distinguisher is appended to the prefix by the receiving BGP speaker.

D. The additional path information is encoded in an extended community

Answer B or D B is correct

 

 

 

Answer will be Terminal

 

 

Which statements about PMTUD is true?

A. It increases the connection's send MSS value to prevent fragmentation.B. It is used to prevent fragmentation of packets traveling across a smaller MTU link between two endpoints.C. GRE tunnels use PMTUD to fragment data packets by default.D. It is supported by TCP and UDP.E. It is used to prevent fragmentation of packets at the endpoint of a TCP connecti

 

D

 

Whice three modes are valid for forming an ether channel between the ports of two switches

 

 

Which three modes are valid for forming an EtherChannel between the ports of two switches? (Choosethree.)

A. Active/active

B. Active/passive

C. Passive/passive

D. Auto/auto

E. Auto/desirable

F. Desirable/onCorrect

 

Answer: ABEExplanation/Reference:To configure an EtherChannel using LACP negotiation, each side must be set to either active or passive;

 

 

 

 

Question 90/500 - 400-101.v2018-03-02

Refer to the exhibit.

 

Which EIGRP routes will appear in the routing table of R2?

A. 2001:112::/64,2001:12::1/64B. 2001:12::1/128C. 2001:112::/64,2001:12:1/128D. 2001:12::/64

 

 

Correct Answer: B

 

 

 

QUESTION 35

Which statement about Auto-RP is true?

 

A All interfaces must be configured in dense mode

B All interfaces must be configured in sparse-dense mode.

C All interfaces must be configured in sparse mode.

D An RP that it tied to a loopback address must be configured

 

DUMP Answer: D

Correct Answer : B

Explanation : Without sparse-dense mode, autorp listener must to configured !

 

QUESTION 77

Which IGMP snooping feature tracks IGMPv3 hosts on a per-port basis?

 

A membership report

B fast-leave

C IGMPv3 static-group

D explicit tracking

E IGMPv3 querier

 

DUMP Answer: E

Correct Answer : D

Explanation :

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QUESTION 140

Which enhancement does IGMP version 3 offer over IGMP version 2?

 

A Which enhancement do s IGMP version 3 offer over IGMP version 2?

B backward compatibi ity with IGMP version 1

C a mechanism to decrease leave latency

D authenti ation of multicast streams

 

DUMP Answer: A

Correct Answer : A should be Source-Specific Multicast (SSM) feature

 

QUESTION 161 (150-200)

Which three statements about IS-IS are true? (Choose three.)

 

A IS-IS has three different levels of authentication: interface level, process level, and domain level

B IS-IS can be used only in the service provider network.

C IS-IS has the capability to provide address summarization between areas.

D IS-IS is an IETF standard

E IS-IS can be used to route both IP and CLNP.

 

DUMP Answer: ADE

Correct Answer : ACE

Explanation :

- A is worded incorrectly, but more or less correct.

IS-IS Auth levels are :

Configured under interface : Interface auth

Configured under IS-IS Process :

- Area auth

- Domain auth

 

- D is wrong as IS-IS is ISO/IEC standard 10589:2002, not IETF !

- C is correct as summarization is possible : Official Cert Guide Vol I page 608 : "area summarization is configured simply by the summary-address command

inside the router isis section"

- E is trivially correct.

 

QUESTION 165

A host on an Ethernet segment has a different subnet mask than the default gateway.

What can be done to allow it to communicate with devices outside of this subnet? 200-250 205

 

A Enable gratuitous ARP on the host.

B Enable proxy ARP on the default gateway.

C Configure a static route for the host on the default gateway.

D Configure a static ARP entry on the default gateway for the host IP address.

 

DUMP Answer: C

Correct Answer : B

Explanation : This is trivial, that's what Proxy-ARP is doing.

 

QUESTION 181

Which three pieces of information are carried on OSPF type-3 LSAs? (Choose three

 

A metric

B link state

C subnet mask

D IP subnet

E authentication type

F external route tag

 

DUMP Answer: ABC

Answer is correct considering that B has to be 'Link State ID' !

 

Explanation :

1.) With LSA Type-3 and 5 the Link state ID is = Destination Network

 

See on RFC :

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2.) Official Cert Guide Vol I page 489 :

S2# show ip ospf database summary 10.3.0.0

OSPF Router with ID (8.8.8.8) (Process ID 1)

Summary Net Link States (Area 0)

Routing Bit Set on this LSA

LS age: 341

Options: (No TOS-capability, DC, Upward)

LS Type: Summary Links(Network)

Link State ID: 10.3.0.0 (summary Network Number) --» With LSA type-3 this is equal with the subnet !

Advertising Router: 1.1.1.1

LS Seq Number: 80000001

Checksum: 0xA63C

Length: 28

Network Mask: /23

TOS: 0 Metric: 74

 

QUESTION 198

Which two options are two problems that Bridge Assurance can protect against? (Choose two.)

 

A Ports being put into a root-inconsistent state.

B BPDU flooding.

C Slow convergence time after a topology change

D The forwarding of data traffic after the spanning tree algorithm is stopped

E Unidirectional link failures

 

DUMP Answer: AE

Correct Answer: DE

Explanation : Official Cert Guide Vol I page 154 :

"Apart from unidirectional links, Bridge Assurance also protects against loops caused by malfunctioning switches that completely

stop participating in RPVST+/MST (entirely ceasing to process and send BPDUs) while opening all their ports"

 

QUESTION 213

Which command can you enter to configure a built-in policer with minimum guaranteed bandwidth without starving other classes during periods of congestion?

 

A fair-queue

B bandwidth

C bandwidth remaining percent

D priority percent

 

DUMP Answer: D

Correct Answer: B

Explanation : Trivial, this is how these QoS statements working :

Bandwidth = minimum guarantee

Priority = maximum guarantee

 

QUESTION 215

Which statements about PMTUD is true?

 

A GRE tunnels use PMTUD to fragment data packets by default.

B It increases the connection's send MSS value to prevent fragmentation.

C It is used to prevent fragmentation of packets at the endpoint of a TCP connection

D It is supported by TCP and UDP

E It is used to prevent fragmentation of packets traveling across a smaller MTU link between

 

DUMP Answer: E

Correct Answer : D

Explanation :

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E not trivially wrong, but there is a problem with the wording (aka meaning) of the sentence.

 

QUESTION 218

Which two statements about VRF-lite are true? (Choose two)

 

A At least one physical interface must be configured to enable a VRF

B An isolated VRF routing table is created for each VRF

C A single customer VRF can support overlapping IP addresses

D Two or more VRFs can be assigned to a single layer 3 interface

E Multiple ISP customers can be supported on one customer edge device

 

DUMP Answer: BC

Correct Answer : BE

Explanation : C is wrong as inside the same VRF can't be IP Overlap.

Same customer different Business Units can be moved to different VRF's like Customer-A-HR and Customer-A-Engineering.

 

QUESTION 274

ip sla 12

icmp echo 10.12.34.5

timeout 2000

frequency 2

ip sla 21 schedule life forever start time now

track 12 ip sla 12 state

ip route 0.0.0.0 0.0.0.0 10.12.34.5 track 12

ip route 0.0.0.0 0.0.0.0 192.168.1.151 200

 

Refer to the exhibit. After you configure the given IP SlA on a Cisco router,you note that the device is unable to failover to the backup route even when pings to 10.12.34.5 fail. What action can you take to correct the problem?

 

A Change the frequency 2 command to frequency 12.

B Change the ip sla schedule 12 life forever start-time now command to ip sla schedule 12 life forever start-time 00:12:00.

C Change the track 12 ip sla 12 state command to track 12 ip sla 12 reachability

D Change the ip route 0.0.0.0 0.0.0.0 192.168.1.153 200 command to ip route 0.0.0.0 0.0.0.0 192.168.1.153 12.

 

DUMP Answer: C

Correct Anwer : N/A

Explanation :

If you configure a threshold on the ip sla operation:

Reachability :

--> Track is u p if the return code is OK or over threshold

-> Track isdown otherwise

 

State

--> Track is up if the return code is OK

--> Track is down otherwise

 

QUESTION 282

QOS config picture

 

A Only traffic matching access-list streaming

B Any traffic matching access-list tp-rooms and access-list streaming

C Only traffic matching access-list tp-rooms

D No traffic gets set to AF41

 

DUMP Answer: B

Correct Answer: B, but answer mus to corrected for "access-list tp-rooms OR access-list streaming"

 

 

QUESTION 295

Picture showing ping/ARP/Debug ARP results.

 

Refer to the exhibit. Rl is unable to ping the device at 10.3.3.3. Which two options are possible reasons for the problem? (Choose two.)

 

A The dynamic routing protocol configuration is missing.

B IP CEF is disabled on the local router.

C IP CEF is disabled on the remote router.

D Proxy ARP is disabled on the next-hop router.

E The static route points to a broadcast interface without a next-hop.

F The static route is configured as a host route.

 

DUMP Answer: BD

Correct Answer : DE is a better choice.

Explanation : CEF has no relation to the issue

Edited by mudassair
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HI All,,

 

Have given the exam today.. 347 is 100% valid, not a single question is out of it for me.!! I scored 902.

 

Have heard there would be change in version soon, so better plan this ASAP before they expires...! Good Luck..

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Edited by Bhusi00

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HI All,,

 

Have given the exam today.. 347 is 100% valid, not a single question is out of it for me.!! I scored 902.

 

Have heard there would be change in version soon, so better plan this ASAP before they expires...! Good Luck..

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Congrats! Can you please tell, from where you have heard that it could change? Is it reliable sources? And when approximately?

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Candidates who plan to take any Expert-level written exam for qualification or recertification purposes on August 30, 2018 and beyond, should refer to the Evolving Technologies Exam Topics v1.1 or to the specific Expert-level certification exam topics which outline the changes in the minor revision.

 

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Edited by collabriz

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Correction for D&D Question 18

 

Refer to the exhibit. The given diagram represents a data plane packet that has undergone GET VPN

encapsulation with time-based anti-replay. Drag and drop each packet component on the left to the letter in the

diagram that represents it on the right.

 

Dump Answer:

ESP Header

ESP Trailer

Metadata

Payload

 

 

Correct Answer:

ESP Header

Metadata

Payload

ESP Trailer

Edited by jackywsw

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Guys, Drag and Drop question 39.

 

I don't agree with:

 

Request a complete refresh of the Adj-RIB-Out = dynamic inbound soft reset and

Uses extra prefix information stored locally = soft reset.

 

I think it should be:

Request a complete refresh of the Adj-RIB-Out = soft reset

Uses extra prefix information stored locally = dynamic inbound soft reset

 

What do you think?

Edited by AES254

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Hi all,

 

had the exam today. I scored 942.

 

Good Luck!

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