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助理工程师
 
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一上来就是一道新题,是关于IPv4的,不过还好,有点基础的都能做对。期间一共4道新题,复习4.7题库稳过。其实做题的时候我觉得自己是970的。。。因为真的跟题库一模一样,可能我实验题没做好吧。 说回实验题,抽到的是ACL3和OSPF。ACL题目和题库有点出入,主要是最后一条acl条目不同了。抽到的题目已经给出Public server的IP地址。最后一条条目不是access-list 100 permit ip any any而是access-list 100 permit ip any host 172.22.242.18.( J2 E k% F- ]( f/ I% K. E' D! J
OSPF的话和PDF第三页那道是一样的。
( N( m' \- ]; |, [7 |9 x6 x 没出拖图题有点可惜,因为我自己很喜欢做拖图题,很稳。如果是刚开始准备的朋友,建议直接用电脑软件来刷题,要比看PDF高效很多,等电脑软件刷得差不多的时候,再把答案顺序打乱的那个选项打开!!!这个一定要打乱答案的顺序,我4月7号下午考,早上才知道有这么一个功能可以打算ABCD的顺序。。。。因为一些题你会自然而然地记住每个选项的位置的,这样很不利于考试,因为考试是打乱的。
) T) t! n' k, Y8 G& L. T% V. i) M打乱顺序的方法是打开软件,到option那里,找到randomize choices where enabled并且勾选上。7 U' ?3 I0 ?8 ]5 u
randomize questions 是打乱题目顺序
8 U+ ~2 S% t+ j9 H! r5 Zrandomize choices where enabled 是打乱选项顺序的
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+ F% p3 y S' _' H; r以下是我记得的题目:
5 u5 ~, v, m$ _& b4 uQUESTION 24- i8 L& G, @5 X3 c9 D/ b! @
Refer to the exhibit. The following commands are executed on interface fa0/1 of 2950Switch.
, }, O5 T0 G3 K9 Z2950Switch(config-if)# switchport port-security h1 z9 y% d3 k2 I
2950Switch(config-if)# switchport port-security mac-address sticky
/ N7 o3 `0 \8 P+ J( y, H Z2 H2950Switch(config-if)# switchport port-security maximum 1" i( ?5 B9 v, S# n
The Ethernet frame that is shown arrives on interface fa0/1. What two functions will occur when this frame. k2 X9 U! [' O. m& D
is received by 2950Switch? (Choose two.)' g) n0 e2 I# C& U( q
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A. The MAC address table will now have an additional entry of fa0/1 FFFF.FFFF.FFFF.
9 F: ~ s- T/ C) O9 W: m. J新版CCNA 考试交流QQ群 :22764853. x/ ?9 N3 c0 N/ b
B. Only host A will be allowed to transmit frames on fa0/1.
; C2 A; V0 N5 {' r; n& G' }6 v: oC. This frame will be discarded when it is received by 2950Switch.$ l: x) m8 ]6 J5 a4 m* g
D. All frames arriving on 2950Switch with a destination of 0000.00aa.aaaa will be forwarded out fa0/1.9 a* k& O1 j1 F, |6 q, p# w
E. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be
% z( H0 f. y: u! s8 T$ h5 U; O9 b& Gforwarded out fa0/1.: ^& c5 `6 H# {) b
F. Only frames from source 0000.00bb.bbbb, the first learned MAC address of 2950Switch, will be
' s% j7 q" x2 M0 hforwarded out fa0/1.+ c( [6 J% W( B$ H( J
Correct Answer: BD5 a7 [2 _1 ~1 x, g
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QUESTION 25
8 p6 \( a9 d: M- s5 cWhich command would you configure globally on a Cisco router that would allow you to view directly
, L5 q2 D; k7 ?* l9 @% tconnected Cisco devices?9 m6 d, R7 `' e: v; b! a- C
A. R(config-if)#cdp run
+ i) }4 v7 F2 _9 ~9 A4 X# QB. R(config-if)#cdp enable% A# d0 G2 ]7 ~# \& X4 q
C. R(config)#cdp run& }$ h; [, k. [$ r. a" B& [
D. R(config)#cdp enable7 v# ?8 C; T/ I3 v2 Y* i
Correct Answer: C
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1 M! G, D0 r5 x/ {QUESTION 29
: t) P& y+ W- T9 }. C" YWhich two commands can be used to verify a trunk link configurationt status on a given cisco switch?$ c5 x, k ~: F' y7 }$ P+ s& `
(choose two)2 G" _- X. g& E3 f. [) X2 m3 S
A. show interfaces interface
2 e8 e. W6 O9 e u' p9 |5 o, v5 MB. show interfaces trunk; O3 u) z) k5 Q. _4 C
C. show interfaces switchport
: y/ P7 {# F% c7 R5 \$ tD. show ip interface brief
W5 M" ?3 `) |0 C# X5 b- \E. show interfaces vlan9 e4 A4 `+ f! I( q, U/ K) L! v' H( _6 g
Correct Answer: BC2 W7 ?- {9 z0 ?
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2 E5 @& B" M J- E/ x W0 N8 I$ R2 r0 XQUESTION 30
1 S2 E) |6 N3 S G( L eWhich two states are the port states when RSTP has converged?(choose two)
1 H( k8 l7 ]# w0 jA. blocking2 _) A, H- _* T: X4 b! I1 {/ C1 c1 P( @
B. learning
- j! [+ M9 t3 GC. discarding* T/ q4 @8 J; G. |' A2 @
D. forwarding
* Q5 r7 N; @7 N; _- H) wE. listening
2 l F; Q# p: U# `( [+ g. |Correct Answer: CD
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QUESTION 36
8 S% m6 x! P( tWhich of the following describes the roles of devices in a WAN? (Choose three.)
3 V* Y/ G5 n* A/ t! ^6 SA. A CSU/DSU terminates a digital local loop' U2 g- e2 L7 R* y
B. A modem terminates a digital local loop
! p* N X: U) e' ]3 V8 @9 `. _C. A CSU/DSU terminates an analog local loop: C9 }2 ?- W- t+ b T
D. A modem terminates an analog local loop$ z9 O6 R6 D6 J0 |
E. A router is commonly considered a DTE device
1 w0 R$ t" h& DF. A router is commonly considered a DCE device
" e3 o: \8 Z, K0 ACorrect Answer: ADE# o" l7 `; ]! W4 V/ T# I: m
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) r1 M2 b `& k: Q3 W8 V2 FQUESTION 39' H7 ?# W/ D9 ]8 V/ ]4 R& U& u
When an interface is configured with PortFast BPDU guard, how does the interface respond when it$ V* v+ g% g V. U
receives a BPDU?
0 }# C6 L. u) j- f- ZA. It continues operating normally.6 H# l/ d& b! `
B. It goes into a down/down state." P; e8 j5 L$ H c% i
C. It becomes the root bridge for the configured VLAN.% w. h8 _8 q$ X7 V2 E" \ _1 |$ X) }9 k
D. It goes into an errdisable state.' v6 Y/ }' t( w8 O2 M& p% l: I% ]
Correct Answer: D- v, J+ F! l$ f$ n
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QUESTION 40
# x( |- S% M. J* W. TWhat are three characteristics of the TCP protocol? (Choose three.)0 E8 Q, N$ F4 M! [
A. It uses a single SYN-ACK message to establish a connection.
8 Y$ ^0 d9 [5 _2 z. ^* kB. The connection is established before data is transmitted.# |7 f7 i2 i" J& L( l, S: W
C. It ensures that all data is transmitted and received by the remote device.2 ^2 L: c( f0 W
D. It supports significantly higher transmission speeds than UDP.$ F! e" l; q' w& ^
E. It requires applications to determine when data packets must be retransmitted.
$ L0 b3 V' G; A; k/ J6 _' e5 AF. It uses separate SYN and ACK messages to establish a connection.
% `# K5 x4 c5 V* W: }Correct Answer: BCF- X/ }9 N$ S1 v/ p g U' v8 J3 h
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/ Z4 W- W* ^* C; ]9 z1 I: K* n2 v2 o. }QUESTION 43
7 @: ~, c! ?" c IWhat are two benefits of private IPv4 IP addresses? (Choose two.)0 u* U" `7 ~4 a( i$ X. m& S0 x; ~
A. They are routed the same as public IP addresses.
& x$ L* u$ }& f0 R3 ? ^: Y* CB. They are less costly than public IP addresses.9 A/ ~& o' h8 u: K( I% S* y K
C. They can be assigned to devices without Internet connections.
( G* E7 n* \% tD. They eliminate the necessity for NAT policies.0 t, ?1 L$ R: {5 W0 ^
E. They eliminate duplicate IP conflicts.
0 u9 x" k+ E0 I# i% cCorrect Answer: BC6 X l/ P o' _/ `+ [
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QUESTION 44/ }; t j& d" V, n& e% i/ o
What is the authoritative source for an address lookup?
* N0 a1 k1 e& ^) ZA. a recursive DNS search o5 X: x( ^& k" ^. L0 V) X+ N
B. the operating system cache
, Y9 ?$ N* G: F8 Z6 NC. the ISP local cache
- N2 O# J4 ^! ^- vD. the browser cache5 L' p3 g) `4 F3 U* H2 L. x- }
Correct Answer: A% n3 P- b% c4 [) e% Q0 a' O$ n" [! F
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QUESTION 50
% P* s4 V' _6 n2 ~' r0 T5 CWhich two statements about northbound and southbound APIs are true? (Choose two.)
( r9 @( Q! J5 K# q) q9 ^( bA. Only southbound APIs allow program control of the network.) R3 j; R( u, j! W. M
B. Only northbound APIs allow program control of the network./ v$ u, ^9 ]; ?
C. Only southbound API interfaces use a Service Abstraction Layer.7 s) x8 X+ c. t) T- \
D. Only northbound API interfaces use a Service Abstraction Layer.' ?# F" k; c" X2 d
E. Both northbound and southbound API interfaces use a Service Abstraction Layer.1 ]2 ^7 L9 p9 J2 B3 j/ A, k
F. Both northbound and southbound APIs allow program control of the network.9 Q- b' o4 d+ r' v
Correct Answer: BC Y3 Z$ s7 j& G, a/ [: \/ s
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: O! R" |' L3 p1 J1 ~QUESTION 55$ g0 i, M" j; M8 b% D+ M5 H
Which function does IP SLA ICMP ECHO operation perform to assist with5 f7 c+ O1 W( a' `* O
troubleshooting9 x2 C; R6 f+ Y8 ]. e) J" H
A. packet-loss detection! w" `+ O6 p* {
B. congestion detection
7 Q; ?- M; R9 K! O ?% f; KC. hop-by-hop response time
) t& `$ D* n1 O: M9 iD. one way jitter measurement& h F/ O0 @3 l, F: {6 V+ L1 O
E. http://bbs.hh010.com/2 S4 x2 f) \& q" F
Correct Answer: C: ^; y3 `7 B! u1 ?! [/ Y! F
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QUESTION 71% y9 I9 G2 {3 M; g' Z0 _- w$ d, i
What parameter can be different on ports within an EtherChannel?# L* |4 ]1 J+ V$ K: J6 @! k8 _
A. speed* c6 `+ v$ L4 O
B. DTP negotiation settings
" @ d. E, L0 i F6 IC. trunk encapsulation5 M( d: C# @3 I8 e/ L
新版CCNA 考试交流QQ群 :227648539 C% [1 @9 ~5 m
D. duplex
/ I$ ]( x+ S4 n0 F1 E+ I) qCorrect Answer: B/ Y* P! F3 \% K3 g2 y3 X& [
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QUESTION 72
; _! J( G' T, C: o0 P' l2 nWhich two statements about IPv6 router advertisement messages are true? (Choose# B9 c- J& G. z: l$ z4 K2 @
two.)
! `' L: K& m$ K9 u% l' bA. They use ICMPv6 type 134.- {/ E- y/ c$ B/ ]1 }; D% v
B. The advertised prefix length must be 64 bits.
4 B7 K) i- S$ s( K" i+ V& ?" v4 |& dC. The advertised prefix length must be 48 bits.! B( }& _% a4 q& f0 U. \
D. They are sourced from the configured IPv6 interface address./ \ L- A7 ?4 s. D/ [6 e% J1 R% O
E. Their destination is always the link-local address of the neighboring node.8 K% o4 t G# G# k
Correct Answer: AB% B% s6 M( s1 l3 s5 _
Section: part
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QUESTION 97
+ r0 |" Y) q* pWhat are two reasons that duplex mismatches can be difficult to diagnose? (Choose two.)( w r- K7 I& b, s$ s
A. The interface displays a connected (up/up) state even when the duplex settings are mismatched.7 Z5 [0 I; c+ E
B. 1-Gbps interfaces are full-duplex by default.- J8 w# u9 h w0 @8 p; U
C. Full-duplex interfaces use CSMA/CD logic, so mismatches may be disguised by collisions.
" j* C# R/ G, g# VD. The symptoms of a duplex mismatch may be intermittent.
; B$ F" K* A! v6 ^E. Autonegotiation is disabled.
# a8 u4 M1 ^8 b. jCorrect Answer: AD
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/ E0 d! n$ j' |7 t5 VQUESTION 105
6 ?8 c; z7 p; r4 h+ |! T0 {6 aWhich part of the PPPoE server configuration contains the information used to assign an IP address to a
! x9 o4 R! f; ]: k- hPPPoE client?
3 M8 r5 z' Z) X* ^2 w) ^2 VA. virtual-template interface& F7 T& J! C* t8 Q x" P1 ~
B. DHCP7 f" }6 q* a) L) P' n% S) B F
C. dialer interface3 a3 |$ ?: f) r+ \: a0 }4 q7 l1 z
D. AAA authentication
% e5 F& B# _3 Y' V7 c, [Correct Answer: A
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