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助理工程师
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QUESTION 2028 g* [* p4 t& D+ t' M1 a
When unicast reverse path forwarding is configured on an interface, which action does l: k) H: C; W" k& I/ y5 h/ I6 _0 V8 s
the interface take first when it receives a packet?
% a3 b4 j& y) {A. It check the ingress access list$ f8 R v- c3 X1 X5 V
B. It check the egress access list$ V8 W* p5 ^; m4 S. [$ c7 h
C. It verifies that the source has a valid CEF adjacency# F" I0 k U2 M4 @* Z
D. It verifies a reverse path via the FIB to the source
( D9 i2 M: g, F3 P& BCorrect Answer: A# l$ i) P! g& p9 ~- w: ^
. i+ o* m* m3 o( f) E& mQUESTION 222
) ^5 a3 U/ {5 V( Z. W0 ZWhat’s uRPF checking first when the packet enters the interface ? or when unicast reverse patch
6 T! |1 }, w6 T- Tforwarding is configured on interinterface.- e8 i' X8 v- n4 D/ u+ X1 {
A. it check the ingress access list6 t9 F" d: n C
B. it check the egress access list0 }) |4 \% `0 E) U* D9 z/ q
C. Route available in FIB ot it verifies a reverse patch via the fib to the source0 R0 z0 s3 V9 I6 b: w# @; U5 K7 R
D. it verify that the source has a......
7 i& P; |/ _$ _5 M5 `Correct Answer: C* U3 w3 h0 s4 N, | a
& E& j& Y. @6 o6 @3 QQUESTION 2286 @+ o3 a6 r# B% f2 z, P, v
When unicast reverse path forwarding is configured on an interface, which action does the interface
. Y4 V) y' C! M+ ~# n- D( r( ltake first when it receives a packet?4 Z6 c* l/ N/ U; D* {, {4 C
A. it verifies that the source has a valid VEF adjacency.2 w+ W( V2 K% P4 B$ D
B. It checks the egress access lists.1 h, g6 f+ n. @5 z/ m
C. it verifies a reverse path via the FIB to the source.
, u7 j: ^" `% Y. W: k" SD. It checks the ingress access lists.
; P' ]* a- l2 S6 KCorrect Answer: C
6 A( r- E! W9 y ?$ U3 Q
7 N I- O8 O# Y7 {# Y; j這三題意思是一樣的吧?為何 Q202 答案和其他兩題不同1 Q$ i+ h* y4 w7 `3 B6 Y2 b& Y
而且 Q202 和 Q228 題目完全一樣答案卻不同- G9 O5 T. L4 C7 H
我的認知是選「It checks the ingress access lists.」1 G! O$ b. S# d, l1 e
請版上先進解惑~謝謝
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