 成长值: 65045
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1. What is the Ethernet frame size for 802.1Q?8 T+ F4 D: \5 u* \1 j$ T4 S
a. 64" c/ ?+ m3 O" I/ I6 r$ ]
b. 1287 |0 a0 b( x2 b& v: Z; \
c. 1518( v2 e- T. J2 [; {; y4 @0 B+ v7 C
d. 1522 **
9 e2 Z; e% Z+ d0 l: {9 Z3 h8 U5 UAns: D* k8 l8 z7 E1 R& p! V/ |
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2. How will the traffic reach the core switch from AS switch to DS core switch?
0 u Z: n, z% q& f! r6 i* q9 W(Based on a topology shown with one core, two distribution and two access switches on each distribution switch, with redundant links and bandwidth mentioned.)
0 w8 P; W1 o7 ua. ASW1 to DWS1 to core( A. i0 ]8 g! `2 Q0 m; v7 }# C
b. ASW1 to DWS2 to core **4 k2 { Y% [) R6 x% G* x8 ~
c. ???
2 ]! W# m8 m& K. `, R& {d. ???7 ]6 [5 i$ k/ K! D
Ans: B
' {$ d7 E- J$ V+ `/ Y" i% i2 _————————————————————————————————————————————————————————————
( T) u' n) k u m' O; @3 s3. If HSRP group number is 45 what would be the MAC address?6 ?0 \0 N. |: u& _- x8 p
(Basically conversion of digit to hexadecimal with group of 16.). w+ J. P/ a1 p" z& b6 p( @
a. 00-00-0c-07-ac-2D, E0 q% F; X- E# `: m( w
b. ???5 k: }$ W. w' e6 b0 x, [6 @+ t8 n
c. ???
( l# y# I; f& E6 G4 i. Rd. ???3 p, C; [1 A4 D7 s$ _
Ans: A" g* ^7 X/ s9 M! ?- y! L# ]
Explanation:# d# [! K0 c, ^/ {- d
00-00-0c- 07-ac-2D% f+ ^2 T3 F: X( `
CISCO_ID :HSRP_ID:GROUP_ID
8 Y4 u2 i! a( }" ^2 `8 H# A* [2d=453 }+ _" A- w3 w% S( E2 o# M$ M
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4 A question on EtherChannel misconfiguration…….
8 @. ?8 G" F4 ~8 p# [5 P. k+ w N; ca. Enable this feature by using the spanning-tree etherchannel guard misconfig global configuration command. **
$ [' X s, O! k, Z' V, T8 Nb. ???2 i8 i; ?+ |3 R" g4 L k
c. ???2 d, T4 g c# E4 b
d. ???- c! ~1 l( x% q' R5 a" w* o
Ans: A
8 [" W" c5 R8 [————————————————————————————————————————————————————————————2 p. j& \8 n2 p& F. `
5. Select a valid VRRP configuration from a list of possible configurations.
7 D% E% k5 a' A& W" Ea. vrrp [group-number] ip [ip-address] **& H' B) o% l( l3 F. }: {
b. vrrp [group-number] priority [priority] **
% s/ @& t m* g1 k3 c8 X; sc. vrrp [group-number] preempt **6 J" m( ~+ y' u/ \9 ~( m: Q4 k
d. ??? T$ R4 U6 g0 @( K9 p7 r
e. ???* {+ k6 X+ \. }8 i
Ans: A,B,C
Y6 @$ N' M' C& S6 f4 |4 gExplanation:9 Z0 R$ ?2 b9 ~$ K" o
You can eliminate configurations with the word ‘standby’, as that would be HSRP, not VRRP. Also, I think the options that put things like vrrp group 1 ip x.x.x.x are wrong. You don’t need the word ‘group’ in the configuration line. The number 1 is the group number. Anyway, just take a good look a t a few valid VRRP configuration examples so that you will be able to recognize invalid ones./ `) H+ Q: W# o/ w
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6. Private VLANs (PVLANs) have two secondary VLAN types.
& Q# Z) `% P" |5 Z2 pa. community **8 `3 Q2 P/ }$ z: l' E
b. isolated **
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d. ???
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Ans: A,B
* l j, u" W$ @. @. i____________________________________________________________; f$ K& j9 {3 @2 E3 s! o9 p& M9 |" k
7. What types of SDM templates you can use in switch? (Choose three)
" @, k: ]# R% Q5 H. n7 X8 ea. Access *** |; M8 n( h; ~: Y6 c
b. Default **# B8 r) p1 \, S) o
c. Routing **# d' _1 d$ D1 L L4 _% B
d. VLANs **
9 M2 R- N8 J3 j+ T) Z4 V2 ce. ???; X/ _8 Q M- k- T w+ A1 g
f. ???
7 `6 i0 G- y1 I M: m/ l5 r6 XAns: A,B,C,D (note: the question asks for 3, so 3 of the 4 correct options should be in the real exam)
0 O! R$ H, M& Q2 h* Q6 {Explanation:3 x0 A1 r' C8 a- v( f
+ Access – The access template maximizes system resources for access control lists (ACLs) to accommodate a large number of ACLs.! m0 q1 G) ^7 R
+ Default – The default template gives balance to all functions.
( S9 M& K$ d, F' E6 }4 o) E0 J+ Routing – The routing template maximizes system resources for IPv4 unicast routing, typically required for a router or aggregator in the center of a network.
, `* F( |8 ]9 Y7 Y* v. m; n* x- M. h+ VLANs – The VLAN template disables routing and supports the maximum number of unicast MAC addresses. It would typically be selected for a Layer 2 switch.
$ p. O, r7 w5 S0 Z. r; d2 N& D____________________________________________________________
/ `0 P% w0 v9 R, i. k8. EtherChannel – what is the process to configure EtherChannel.
( q2 N- ~! o% v b$ H& e$ Ka. shutdown both interface ports **
4 p/ B% w+ L7 e, b$ gb. shutdown the interface on one side only/ R! [; z4 l; i8 e5 F# V. Q
c. ???) x5 Z/ r7 K0 `- ?: K9 t6 ^& ]
d. ???
1 C! [& X# }3 E, MAns: A
0 W7 d3 U K# W7 L____________________________________________________________ t X+ q. `4 t. \% h7 l, s
9. A question about spanning-tree port-priority.0 h$ X" |$ }% q9 ~0 b
a. 127 **8 b" h" u: K1 h! V) i2 v& [
b. 129
8 s% d0 \) [1 _0 x; G$ g" P- jc. ???; z, i3 p0 m4 h% d! Q9 }
d. ???
- e" m: g" G) z! l2 m, xAns: A
, C6 j8 `0 q- x0 n( q____________________________________________________________8 h; z' W; L; k ]- H! `* {4 Z
10. Question about EtherChannel based on STP EtherChannel misconfig……
( ?# m$ H% g9 {% j" u8 _a. (config)# spanning-tree etherchannel guard misconfig **
6 l0 D3 q; N0 b! l9 T( B; _$ Xb. (config-if)# spanning-tree etherchannel guard misconfig: h: S* g2 m2 g* _) ? P
c. ???
$ I. K1 @7 Q2 U8 B, cd. ???0 B* g/ Z; V' O+ ?% I, M& a
Ans: A* G& R: R; B# ^' D/ U8 b
________________________
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46 Question about voice VLAN.: h9 S E7 f9 o1 v* S4 n5 I
a. Disabled by default **
9 w/ e1 F7 x2 H+ F( rb. Enters on untrusted port; O( X5 I8 `; |/ T! L; y/ L
c. Default CoS value of 5 for untagged….. **
% Y* A) i V7 i( bd. Needs manual enable of portfast.
% h7 ?2 Y; n' W! c( R6 m( o5 dAns: A,C8 D( P+ c) L i" S
____________________________________________________________
: d. V' |9 T/ f$ V* m, \47 . Question about UDLD aggressive. (Choose two.)
/ q: A: k, X7 N" ra. UDLD messages are sent every 15 seconds. **
: g, G! z5 O1 zb. UDLD tries to reestablish link once before declaring the link down.! t: @' o! _8 H: r
c. When unidirectional fail is detected, port state is determined by spanning tree.9 v7 [4 N# h( _& R0 P2 T/ M Q
d. When unidirectional fail is detected, port is turned to errdisable. **
^+ b/ ~: C' B1 se. UDLD sends messages four times the message interval by default.) O* _7 b$ i# U, v. L: C
f. UDLD automatically … message interval based on configured timers.
( c A; z" H2 L1 z5 k: AAns: A,D& w3 v; Q6 {6 ^% o3 |
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48. Diagram is: with 1 core, 2 DSW connected with EtherChannel, 2 ALSW, 2 PCs per ALSW. Per diagram current root for VLAN 10 is DSW2.
9 J+ G# i* E* M3 N. Q3 H& t7 wQuestion is how to make DSW1 the primary root for VLAN 10. (Choose two.)% q* Y8 v6 u3 Y) ^
a. DSW2: change bridge priority to 61440 (highest). **0 K$ Z( Z# e( X( N
b. DSW1: change bridge priority to 4096 (lowest). **
' G# ]" f$ b4 X4 D$ E6 \! ^5 ~, \" Nc. DSW1: change port priority but in global configuration mode.$ N! A: Y4 T+ H0 T9 U+ F& \
d. DSW1: change bridge priority but value is 0.4 H6 H5 S6 e, e" w, y% ^
e. DSW1: change bridge priority but command is priority root.1 M* a& l& S, _
Ans: A,B
1 U N5 |, n; s c$ e____________________________________________________________# c( k5 x! ]6 n; X1 q( u
49 . How to configure dynamic ARP inspection on a VLAN?* e& O' j$ u/ X) B
a. (config-if)# ip arp inspection vlan2 J/ x# B& ^) y0 P$ E$ F
b. ???8 U( W, `9 b- h
c. ???
O4 P6 c; \/ j5 j( U& Hd. ???
O# B9 c5 n2 K; rAns: A
+ Q& H" P; V5 R! ^9 d! a" R____________________________________________________________1 V& ^. m$ y5 |. J
50. Drag and Drop – Port Priorities
4 S" k6 { \- u6 ]" I" sPort Cost4 L+ _+ Z8 o! \- h8 _
– 8 default is being the interface value
" t, p2 h; K) ~' Q– range 1 – 200k (200,000)
7 ?* c6 P2 J( X1 g8 R9 q) vSwitch Port Priority
; g" L. s' _( m; p$ x1 u– default value is 1286 [& `. \% N O/ f$ H6 \ u! _+ z8 x
– multiple of 16
- p5 k& _5 |4 e( K8 u! ~Switch Priority
$ L) z S3 o$ @7 l– lower the better
8 D4 u; c$ L2 q8 A– multiple of 4096$ n$ v; i+ s9 O, a5 x8 S0 ?
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发表于 2017-5-16 13:17:46
