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助理工程师
 
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发表于 2018-5-25 21:15:20
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請問題目是像這樣嗎? , s4 K% o% r& J; Y0 S- |9 b( S/ t
% }) F( u2 x: O1 o& t# @# r
QUESTION 1
7 k+ H* h$ H. }5 G# B RThe following commands are issued on a Cisco Router: ! c' `9 K3 D( E/ z# y4 z$ i
Router(configuration)#access-list 199 permit tcp host 10.1.1.1 host $ y \( K8 R9 N' S3 x
172.16.1.1
+ V& W# `4 @+ c, }Router(configuration)#access-list 199 permit tcp host 172.16.1.1 host
+ f- ~" D" l! m10.1.1.1 9 Y+ X" Q; k" v) J; N! Q7 H
Router(configuration)#exit
0 ]; c! @/ @9 X# aRouter#debug ip packet 199 ( R/ [* E6 o% o4 |
What will the debug output on the console show? ( b8 P5 n/ I# Q3 C O7 x
A. All IP packets passing through the router
1 o$ H5 ? U# r1 ^8 }* `B. Only IP packets with the source address of 10.1. 1.1 , W, K" ]- l6 W3 T+ B$ e* g
C. All IP packets from 10.1.1.1 to 172.16.1.1
+ N3 t8 ?- W* p' RD. All IP Packets between 10.1.1.1 and 172.16.1.1 ' }/ l I2 `; c
Answer: D
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$ g2 l# |, x3 e, ?/ Z2 _5 VExplanation:2 s5 v8 E# J9 j2 N7 Z
In this example, the "debug ip packet" command is tied to access list 199, specifying which IP
- _, C5 D& B3 f7 p: O! [packets should be debugged. Access list 199 contains two lines, one going from the host with IP " I' j5 m2 f" n* q
address 10.1.1.1 to 172.16.1.1 and the other specifying all TCP packets from host 172.16.1.1 to
; T( w; R) [, v3 }10.1.1.1. 3 L0 |& P9 a& o! {5 ~0 E
1 _8 M$ d1 {( I& e9 N4 [: p! q
QUESTION 2
: M. y2 w9 v3 t! {9 T$ YWhat level of logging is enabled on a Router where the following logs are seen? %LINK-3- 6 ? U7 m4 i7 M9 `0 e! W
UPDOWN: 6 B' R1 d5 [. F% K; s, P! E
Interface FastEthernet0/1, changed state to up % LINEPROTO-5-UPDOWN: * p" o& [& ^, D( W+ m0 N; l
Line protocol on Interface FastEthernet0/1, changed state to up ) Q$ m- x& U; p0 D4 M; V, @
A. alerts
8 ]* I' f/ v4 R8 R- A% S0 M1 ZB. critical
/ u! U% v6 r8 c7 zC. errors . j: z4 a; ]4 o! Y2 M) }4 l
D. notifications 6 z. }/ K0 E( Y3 m8 N; Y% x
Answer: D . `( D- P3 q8 g1 x7 a
' F' a1 t, w+ c+ {" a% B: dExplanation:
# d! o( K$ o5 B- h+ A/ _Cisco routers, switches, PIX and ASA firewalls prioritize log messages into 8 levels (0-7), as
0 B' m, i0 f0 m& ~6 k% i" O" R. bshown below: : W; K! } Q* W s y
LevelLevel NameDescription
8 h$ y3 W# ~8 s' R, R0 f0 Emergencies System is unusable 2 {" i$ M$ L; v; O
1 Alerts Immediate action needed 3 a5 j. M' n" s& `5 S
2 Critical Critical conditions
$ A( u9 w" e3 Z8 @' G; U" a3 Errors Error conditions / C, a- F: r8 D, f m6 I, Z4 Y5 A
4 Warnings Warning conditions
% w2 b* i' k9 s! X" _4 t5 Notifications Informational messages 5 D4 I8 m- K+ A$ m! ?
6 Informational Normal but significant conditions
' R M5 E; Q* q. a8 Q+ \7 Debugging Debugging messages & m9 |) C( j" N( b5 h( t
When you enable logging for a specific level, all logs of that severity and greater (numerically * B/ c0 E$ {8 e: m [
less) will be logged. In this case we can see that logging level of 3 (as seen by the 3 in "LINK-3-/ s" M% w- g4 E* j
UPDOWN") and level 5 (as seen by the 5 in "LINEPROTO-5-UPDOWN") are shown, which ( [1 B$ c0 E( d# S4 N, W
means that logging level 5 must have been configured. As shown by the table, logging level 5 is $ _8 a+ g) K% ~, f/ `$ g
& S3 y# X V3 \8 T. t
QUESTION 3 3 u7 l8 {( R2 L7 G
You have the followings commands on your Cisco Router: 8 Q$ D* t- }! d& X; }2 f
ip ftp username admin
- C% C9 F8 C% s& @) Sip ftp password backup , Y7 t! Z- X2 f u- \+ j3 e
You have been asked to switch from FTP to HTTP. Which two commands will you use to replace
" |( j( q) O) C1 t* nthe existing commands?
9 B! K# W# g; \- C& u& MA. ip http username admin
: Q& D3 }4 t( T6 z0 y! x SB. ip http client username admin
0 {7 t: ~" ]) L8 TC. ip http password backup
/ y( }; ?# J$ n9 Q1 X: x1 H5 L, fD. ip http client password backup $ p1 X3 Q% S( d2 x9 D/ E$ J
E. ip http server username admin 7 K# R6 v8 O7 A' [
F. ip http server password backup ) x: ~7 d0 x- i1 p
Answer: BD ) r6 k; w8 D/ t# Y! F& G
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Explanation:3 h( U) m+ q- S" Y$ p
Configuring the HTTP Client : }" \1 h6 q" Y0 ^
Perform this task to enable the HTTP client and configure optional client characteristics. The ' _. s. `6 n: R# o5 v% L6 s
standard HTTP 1.1 client and the secure HTTP client are always enabled. No commands exist to
' [0 Y/ i3 h! ^9 }/ t( ydisable the HTTP client. For information about configuring optional characteristics for the HTTPS : G; M0 W) U$ p7 y" c# R
client, see the HTTPS-HTTP Server and Client with SSL 3.0, Release 12.2(15)T, feature module. |
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2018-5-25 21:15:20
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