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助理工程师
 
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发表于 2018-5-25 21:14:36
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請問題目是像這樣嗎?
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QUESTION 1
; B& P$ }. m$ B0 C& w/ {. TThe following commands are issued on a Cisco Router:
5 J) G: f- E# ?2 P+ B$ {: oRouter(configuration)#access-list 199 permit tcp host 10.1.1.1 host
; }# _& C T6 J- \- X172.16.1.1
; p' J$ o' Z2 y' h" \: NRouter(configuration)#access-list 199 permit tcp host 172.16.1.1 host
[; N3 q% C- J& ]10.1.1.10 A& v3 V! t/ u% L& s
Router(configuration)#exit, W/ k# o6 ?8 Q; X/ Q
Router#debug ip packet 199
& k. T3 `, Y. w7 k% i4 vWhat will the debug output on the console show?
4 E8 D# Y* x& V5 Y. Q; T# fA. All IP packets passing through the router
. F& t# k# Y- t% F: Q' D/ o4 D, OB. Only IP packets with the source address of 10.1.1.1+ C/ a+ M e6 x# T' a1 G% G8 F. J
C. All IP packets from 10.1.1.1 to 172.16.1.1
" |+ T: D# h+ M m. }D. All IP Packets between 10.1.1.1 and 172.16.1.1/ E+ b: X% x4 P' P
Answer: D
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Explanation:
! ^$ _; T$ ?' Q8 sIn this example, the "debug ip packet" command is tied to access list 199, specifying which IP% P) x$ E- f2 h7 A5 M1 o
packets should be debugged. Access list 199 contains two lines, one going from the host with IP2 B6 G) ^ l% S8 |+ a" Y' T( M% W
address 10.1.1.1 to 172.16.1.1 and the other specifying all TCP packets from host 172.16.1.1 to6 p8 {* M$ H; k" T, O
10.1.1.1.
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+ M; E! {2 }1 B9 bQUESTION 2" E% A2 D9 q; \, r E" w( l' Z5 j; _
What level of logging is enabled on a Router where the following logs are seen? %LINK-3-' I5 a2 D* v- a g1 c) t Z
UPDOWN:
2 c* `9 n' b; YInterface FastEthernet0/1, changed state to up %LINEPROTO-5-UPDOWN:; g/ a$ M" k. H' G7 e
Line protocol on Interface FastEthernet0/1, changed state to up8 ?8 V! U# i( V% X
A. alerts
4 `* o+ z# G: X zB. critical
/ V5 L* ]4 D5 c- l* ?5 {C. errors
2 K/ @4 e" X3 RD. notifications
5 G1 Q0 H. l( y1 n' Z. QAnswer: D
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Explanation:
$ S9 z* N$ M9 R6 s, aCisco routers, switches, PIX and ASA firewalls prioritize log messages into 8 levels (0-7), as4 K8 c, R+ J- l& M4 ?' ? z: `
shown below:
' {# i2 z7 J' @( @LevelLevel NameDescription
5 ~% o1 Q/ r( g2 n8 ^3 V0 Emergencies System is unusable
3 Y" T! Z* V3 F: g6 r3 r4 i- r1 Alerts Immediate action needed
7 ?( U3 a: S7 t) W- m" \1 G2 Critical Critical conditions7 F& Z( U' V( E- w: v* y) M
3 Errors Error conditions
1 Q4 B4 t3 b7 Q, g, d4 Warnings Warning conditions9 i% S" d+ \2 o9 |
5 Notifications Informational messages. R4 {# T. A4 y. ~# C7 n# p0 I1 Z7 P
6 Informational Normal but significant conditions x1 b- R( H/ B
7 Debugging Debugging messages
# R& V9 k" y6 A& cWhen you enable logging for a specific level, all logs of that severity and greater (numerically
A8 v6 h4 I2 A6 oless) will be logged. In this case we can see that logging level of 3 (as seen by the 3 in "LINK-3- c; \* l) A# I' q# s9 X
UPDOWN") and level 5 (as seen by the 5 in "LINEPROTO-5-UPDOWN") are shown, which% D3 @2 s$ N# B; n& F3 i' } O
means that logging level 5 must have been configured. As shown by the table, logging level 5 is
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QUESTION 37 L* M9 E* ^1 A
You have the followings commands on your Cisco Router:
# O* \ I6 D: o1 \ip ftp username admin/ b i- ^# x7 [: i; M; J
ip ftp password backup$ K3 f( t0 F" n! h- N7 A
You have been asked to switch from FTP to HTTP. Which two commands will you use to replace
& x0 l7 \$ w; V4 z) Q9 h$ Q' W) z) x$ _the existing commands?
$ }" w3 B. Y7 m" A+ ~A. ip http username admin
5 G( Q7 O; D" l5 e* b6 W, k& TB. ip http client username admin
7 R# K8 f' N: [C. ip http password backup! H, N3 k8 U1 j$ D5 |3 N1 B8 b
D. ip http client password backup0 E7 w) Y3 Q1 Z1 f0 |# f) u! N( K
E. ip http server username admin# B% n/ l1 R% Q* `
F. ip http server password backup- {* d: ?4 J( k0 `" @# C
Answer: BD
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Explanation:# L. \2 m+ \& Z
Configuring the HTTP Client; X7 Q4 N( S5 K8 m5 b
Perform this task to enable the HTTP client and configure optional client characteristics. The
2 x# P4 B6 A ~; w/ [0 D& \. c9 Gstandard HTTP 1.1 client and the secure HTTP client are always enabled. No commands exist to" J& H% H G4 T$ m
disable the HTTP client. For information about configuring optional characteristics for the HTTPS
1 l7 g- s+ X: x9 S0 l' Eclient, 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 21:14:36
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