2017.2.15 CCNP路由有錯,請更正

gumdun

題庫有錯,191答案應該是A,C

Refer to the exhibit. Which tworeasons for IP SLA tracking failure are likely true? (Choose two.)

A. A route back to the R1 LANnetwork is missing in R2

B. The default route has wrongnext hop IP address

C. The destination must be 172.30.30.2for icmp-echo

D. The threshold value is wrong

E. The source-interface isconfigured incorrectly

Answer: A, E

Explanation: If “source-interfaceFastEthernet0/0” is used, the routing table of R2 should have a route back toR1 LAN network in order to solve the IP SLA tracking failure.

If the routing table of R2 doesnot have a route back to R1 LAN network, the “source-interface FastEthernet0/0”is configured incorrectly. Remove the portion “source-interfaceFastEthernet0/0” or use “source-interface FastEthernet1/0” instead would solvethe IP SLA tracking failure.

The setting of the defaultroute has no effect on the IP SLA tracking for “icmp-echo 172.20.20.2” since R1routing table has a directly connected routing entry of 172.20.20.0/30.

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A network engineer enables OSPFon a Frame Relay WAN connection to various remote sites, but no OSPF adjacenciescome up. Which two actions are possible solutions for this issue? (Choose two.)

A. Ensure that the OSPF processnumber matches among all remote sites

B. Configure the neighborcommand under OSPF process for each remote site

C. Change the network type tononbroadcast multipoint access

D. Change the network type topoint-to-multipoint under WAN interface

E. Enable virtual links

Answer: B, D

Explanation: Since OSPF usesRFC NBMA mode on Frame Relay WAN interface by default, the “neighbor” commandis required under the OSPF process for each remote site.

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On the other hand, you couldalso change the network type to point-to-multipoint mode by typing the command “ip ospf network point-to-multipoint” under theFrame Relay WAN interface. For RFC point-to-multipoint mode, no “neighbor”command is required.

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fengkaobiguo

明天就要考了！！！！！

Shalltear

标记一下   

gumdun

題庫117 又錯了, 正確ans 如下
& w; i& k% X* e- c3 U' HThe enterprise network WAN link has been receiving denial of service attacks from
both IPv4 and IPv6 sources. Which three elements can you use to identify an IPv6
packet via its header, in order to filter future attacks? (Choose three.)
$ ~1 A7 Q) V, p  i. a5 g+ {8 HA. Traffic Class
$ r) R9 _3 A, A5 s% I% G8 dB. Source address
$ ^% ], Z; e; C1 _* v! G0 hC. Hop Limit
D. Fragment Offset
E. Destination Address
8 R; F. U6 ]  x( s7 P, DF. Flow Label
) y$ N: G: b" D% {! m3 ^Answer: B, E, F
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gumdun

題庫138 又錯了, 正確ans 如下
( w3 F. b% ?9 C- W( }8 A0 nOther than a working EIGRP configuration, which option must be the same on all routers for EIGRP authentication key role over to work correctly?
A. SMTP
. P8 J0 Q1 i; K% F- dB. SNMP
C. passwords
D. time
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6 @2 G" q7 h! y9 D6 o Answer: C

lgy194

谁来确定答案的对错

lok7120

thank you for sharing

啊哈哈

gumdun 发表于 2017-2-20 19:49
" n# t, [( q7 x% h! `" [$ L題庫117 又錯了, 正確ans 如下
The enterprise network WAN link has been receiving denial of service a ...

, K# K2 t" {7 p4 V# C能不能不要根据你自己的主观臆测就说答案错了

cp54

小乔，出来解释一下，这是怎么回事？

南宫元清

熊猫爱安静

准备考试了   能确认下标准的嘛

gumdun

QUESTION 183 圖錯
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& Z9 y2 }! C9 V# C# X應該是這張
來源
http://www.digitaltut.com/route-eigrp-questions
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江南/sun

准备考试了   能确认下吗？

gumdun

Q183 圖有錯,正確是這張
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gumdun

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. S$ X3 |' ]5 m  t& j% j: n! W$ H" J  h( ?QUESTION 188

A. In a 6to4 tunnel, the first two bytes of the IPv6 address will be 0x2002 and the next four bytes will be the hexadecimal equivalent of the IPv4 address.
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( v: ^! q% |/ _QUESTION 202 題目應是這樣
* F/ A) B2 A/ w) d& \3 oWhen unicast reverse path forwarding is configured on an interface, which action
does the interface take first when it receives a packet?
A. It checks the egress access lists
B. It checks the ingress access lists
1 q7 n1 B  X% V- p9 a$ v1 Y) YC. It verifies that the source has a valid CEF adjacency
" Q% f  {5 V1 B7 h' d0 }" J. T8 QD. It verifies a reverse path via the FIB to the source
Answer: B
& \& I! o/ U) }/ S+ AExplanation: When a packet is received at the interface where Unicast RPF and ACLs
' k7 W# U# h+ K5 chave been configured, the following actions occur:
3 M0 P9 u# @. r% T4 YStep 1: Input ACLs configured on the inbound interface are checked.
Step 2: Unicast RPF checks to see if the packet has arrived on the best return path to
* Z* |+ q* W8 L- [, z( y6 Rthe source, which it does by doing a reverse lookup in the FIB table