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助理工程师
 
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楼主 |
发表于 2018-5-25 21:31:47
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显示全部楼层
砲灰還有人作伴,感覺不孤單
" Z7 B3 k1 d1 k& x- h' ]+ C) B8 q
" c @2 r' K. @1 I/ l1 Y還想做一點掙扎, e8 R" W3 C) v7 E! Q
有的賣題庫的有5/22-5/24更新的 , 與去年12/11,3/27,5/14版本有所不同 , 不知道是否是一線希望?
+ g" w) ^# e( x5 q* C如果可能就要去買了/ H" o/ o8 X2 F4 }1 P
3 n/ [2 M: N. @4 i# @! J- V
QUESTION 1 j' b9 w; l- g# \# C1 H% Q
The following commands are issued on a Cisco Router: * W; _: ]8 I$ s3 b( P. b
Router(configuration)#access-list 199 permit tcp host 10.1.1.1 host
+ x# k# F8 _8 ]# G j172.16.1.1
" O: T% u/ P5 M$ rRouter(configuration)#access-list 199 permit tcp host 172.16.1.1 host
2 v; o+ ]$ s0 T! h* { J* ?! x2 j10.1.1.1
/ I+ a) }* \) X+ q+ H( d [& ]Router(configuration)#exit
5 M7 W6 j# r3 m2 e2 D7 j2 cRouter#debug ip packet 199
" q$ n5 b* a$ w6 KWhat will the debug output on the console show?
+ G( U7 c9 ~# }' e$ t" }% v4 FA. All IP packets passing through the router 1 P- t7 W( S _9 X
B. Only IP packets with the source address of 10.1. 1.1
. U& d- F/ ~2 h( P4 dC. All IP packets from 10.1.1.1 to 172.16.1.1 5 C% z% M; A6 y) u. ]' ], J
D. All IP Packets between 10.1.1.1 and 172.16.1.1 4 x. O G. G& _, y: B
Answer: D N3 m- Y: @6 T0 _* {0 I! [
) J a [/ P8 U. ~. n0 Z) r9 ]: U; t
Explanation:6 a; E) b; D" S! F- F
In this example, the "debug ip packet" command is tied to access list 199, specifying which IP 4 b& u% i" Q5 B
packets should be debugged. Access list 199 contains two lines, one going from the host with IP ' `: {: ^& @; i+ E0 e7 g) L( n
address 10.1.1.1 to 172.16.1.1 and the other specifying all TCP packets from host 172.16.1.1 to
6 G+ t0 }. N& C0 H1 I3 j' U0 X10.1.1.1. % u3 a8 D5 j1 H$ O+ E- s- m0 r
8 a* \$ H4 F2 b. W. \
QUESTION 2
0 R* | {+ ^+ M& d0 eWhat level of logging is enabled on a Router where the following logs are seen? %LINK-3- & @& ^5 e3 F3 f
UPDOWN: * ^( a" c% ~" A5 {+ n2 r
Interface FastEthernet0/1, changed state to up % LINEPROTO-5-UPDOWN:
& k; Y0 |# _+ N$ MLine protocol on Interface FastEthernet0/1, changed state to up 3 f6 i0 R/ F( e) m
A. alerts 7 G3 \6 u# J( q0 {9 s4 z# A* o% `
B. critical
8 Y5 O/ b+ ?5 |" B+ iC. errors ! [* X9 x, A5 c( u) _$ X
D. notifications
: v0 z5 z; i1 \2 K) N9 UAnswer: D
$ p( R; e3 ^6 L( o5 g
% E) G3 m) j5 z! Q% ^' t) GExplanation:3 F# F3 V* k( O) P& U* o
Cisco routers, switches, PIX and ASA firewalls prioritize log messages into 8 levels (0-7), as 9 t7 H( K# h4 l* X- h! _4 k
shown below:
& \. R, j8 H( N3 uLevelLevel NameDescription
$ t: q- u/ P0 }& Q7 d: k4 U. ?0 Emergencies System is unusable
! c+ m9 j7 g p9 a1 Alerts Immediate action needed
# i2 s7 E( F- k2 Critical Critical conditions
6 l9 C* V4 H {2 |$ n1 y3 Errors Error conditions 8 n S' ^% g7 T2 H& L& a; g
4 Warnings Warning conditions
8 N3 d4 v) F/ N5 Notifications Informational messages
( r# X8 ~; p$ o" i6 Informational Normal but significant conditions ?- H6 m) ^, k# r+ q4 v- l& G
7 Debugging Debugging messages
- G/ x8 j$ H5 z+ VWhen you enable logging for a specific level, all logs of that severity and greater (numerically
2 L' T) g0 _* e: r1 E* J n: m Pless) will be logged. In this case we can see that logging level of 3 (as seen by the 3 in "LINK-3-
# z& D7 ?( J! V+ c+ s, _UPDOWN") and level 5 (as seen by the 5 in "LINEPROTO-5-UPDOWN") are shown, which + P# a7 r6 d* \ j9 @- [
means that logging level 5 must have been configured. As shown by the table, logging level 5 is
+ M8 v4 k( m6 i9 m2 w, f- ?$ G" D. A. t- W& ]4 O
QUESTION 3 " D! D7 C4 u' p! f# s W
You have the followings commands on your Cisco Router: ( q" _' Y, d3 K# o* X
ip ftp username admin
, w9 K8 t5 g9 Z/ k) V. v9 ?ip ftp password backup , W- J" R* k- Y4 {; _
You have been asked to switch from FTP to HTTP. Which two commands will you use to replace % w+ A/ F! S4 N$ i5 d
the existing commands? 0 ]# U) T6 {$ _
A. ip http username admin . k1 W, d1 t, f: N2 ]8 i0 U
B. ip http client username admin ; ?. ~3 X" }5 F/ G+ G8 k7 ~
C. ip http password backup * S/ S2 A. R0 X8 g5 s* Y* ^
D. ip http client password backup
' J3 D" U% \% mE. ip http server username admin " P1 ]% M, S4 C" P- l0 e6 @
F. ip http server password backup
1 w4 I: S- F7 {, L6 N9 eAnswer: BD
3 |- c: Y& H/ b; g5 `" S; J2 s" u$ k) t; _
Explanation:5 e& Z. \& V6 s: `/ H" N3 f* N+ X
Configuring the HTTP Client
- L+ ~' D- S2 K3 B1 hPerform this task to enable the HTTP client and configure optional client characteristics. The + u! X$ z* x, T2 u" n. S0 W
standard HTTP 1.1 client and the secure HTTP client are always enabled. No commands exist to & ]4 f8 n0 g: T' L. z1 i/ |9 D
disable the HTTP client. For information about configuring optional characteristics for the HTTPS
7 s4 I; E, J3 R5 Vclient, see the HTTPS-HTTP Server and Client with SSL 3.0, Release 12.2(15)T, feature module. |
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