1.Which of the following types of packets will be allowed entry when a serial + F+ p1 t; L3 C0 f. Z' V8 y' q
interface’s inbound access list has been configured to prohibit entry for TCP and
" d! w/ G+ K) w# z2 M0 eUDP ports 21, 23 and 25? (Select three options.) $ p, Y: {/ D6 x4 r8 T$ c2 o/ o
A. SMTP B. STP C. FTP D. Telnet E. HTTP F. POP3
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2.One of the trainees assigned to you want to know which services use TCP. W 5 ^. J' o6 c/ h- D8 Z; l1 N
hat can you tell him? (Select three options.) . ?. G( W5 X6 k: V
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A. DHCP B. SMTP C. SNMP D. FTP E. HTTPF. TFTP . f! e( @' W0 q4 g: u5 I. H
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3.Which of the following network masks would you use to reduce any wastage of
7 a, O- e' W* N/ C2 IIP addresses in point-to- point WAN links on a network that supports VLSM?
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+ }/ L; H4 S* ?4 ?9 kA. /38 B. /30 C. /27 D. /23 E. /18 1 m$ O" }/ d7 |& H8 d% z
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4.How would you configure a router to avoid situations such as split horizon
$ a6 t1 n' D, Y/ P T+ Dissues hampering routing updates on a Frame Relay network? 5 v5 c: i( t! l5 L! l. L
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A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet
% O; ]0 ?; T0 O3 H6 \assigned to the subinterface.
) Z' Y1 _% b- M" `B. Configure each Frame Relay circuit as a point-to-point line to support multicast
( e" {; H5 d S- W( o3 |% _& y and broadcast traffic. / t. T# b( k' c! O6 }) u, f
C. Configure one sub-interface to disperse into multiple PVC connections to * D- _0 W& x) s% p
multiple remote router interfaces. / J, U! F6 D& c+ L E3 Y
D. Configure as many as possible sub-interfaces on the same subnet.
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5 E+ I2 F2 W- X$ S5 }% e 5.With regard to ISDN, which of the following are true? (Choose all that apply.) - e8 u+ U0 r( J1 } g+ C/ E
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A. Legacy DDR can use port information to define interesting traffic. * [/ n3 G- {; b6 V
B. Legacy DDR can configure multiple dialer configurations on the same interface.
" t5 i+ \2 p2 W& B1 `1 {C. Legacy DDR can use ACLs to define interesting traffic. ! S% F, }* N, q% L5 f
D. HDLC or PPP can be used to encapsulate ISDN D channel information.
9 [$ S: f* d5 W$ cE. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong
7 ^$ g; Z9 U/ K" N- w9 R& g( Zto multiple dialer pools.
- |! F0 g# T& w: qF. Dialer profiles cannot use ACLs to define interesting traffic.
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, P6 Y+ O# j* ~' ~ 6.Which of the following is a characteristic of link-state protocols? + g' ]1 d9 Q! p9 n3 C
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A. A network topology change generates an update that is broadcast to every : g; S# F/ v9 O* {( u. Q" x4 e
router on the network. 4 T6 b* y6 K7 \% D# S# j3 X4 Z
B. The periodic routing update interval is slightly different in each router on
, M& z7 r8 Y% G; Na subnet. ) y2 Z8 e M9 S/ J$ n) s$ @2 H
C. Each router creates a routing table that only includes its directly connected
2 `0 G3 \" ]9 J1 }! _! \; t+ ]neighbors.
]8 l6 o, j2 R: `1 }+ zD. Link-state protocols send routing updates only when there is a change in the |
发表于 2012-8-3 19:18:10
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