1.Which of the following types of packets will be allowed entry when a serial / C( [5 p& G) a0 _0 ?: g/ }
interface’s inbound access list has been configured to prohibit entry for TCP and , _' p% b4 l; M x3 \" Y1 a
UDP ports 21， 23 and 25? - C* l& {# {" \& j
A. SMTPB. STP C. FTPD. Telnet E. HTTPF. POP3 + l( P* \9 |1 t+ s0 `" y
2.One of the trainees assigned to you want to know which services use TCP. W
" B; K) ~! `1 y& l/ _4 g8 ]hat can you tell him? ! ]3 I$ ^5 n2 d9 {: p8 n
A. DHCP B. SMTP C. SNMPD. FTP E. HTTPF. TFTP
& s& K3 |% f. a3.Which of the following network masks would you use to reduce any wastage of & o b4 D O, i* ^: @
IP addresses in point-to- point WAN links on a network that supports VLSM? O) C6 @% h4 J6 i1 O1 `
A. /38 B. /30 C. /27 D. /23 E. /18 : D# z4 |, } R H
4.How would you configure a router to avoid situations such as split horizon
) f- n T, j$ C( M4 o4 S4 Cissues hampering routing 0updates on a Frame Relay network? 4 R5 b' `" x+ {
A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet 0 O, ~ v6 R% o: r$ n5 U6 J
assigned to the subinterface. + W" u# l5 O! b- m# I
B. Configure each Frame Relay circuit as a point-to-point line to support multicast * w1 Q) [" I1 e+ l
and broadcast traffic.
. S1 @; \2 w: n! yC. Configure one sub-interface to disperse into multiple PVC connections to
6 Z7 j' h- D @5 X5 H& k5 ^multiple remote router interfaces. ( Y [0 ^! C) X# G" ~
D. Configure as many as possible sub-interfaces on the same subnet. ( l! y. d4 n, k- A- [1 G$ h* W
5.With regard to ISDN， which of the following are true? 1 Q3 |- I6 D/ c8 e7 ^# c
A. Legacy DDR can use port information to define interesting traffic.
" Z4 _' q, `3 G* e4 d5 \0 OB. Legacy DDR can configure multiple dialer configurations on the same interface.
2 O8 t- e& F: Z6 X9 j/ }C. Legacy DDR can use ACLs to define interesting traffic. 7 ~; N2 I( K# B9 L+ U4 d9 z, ]
D. HDLC or PPP can be used to encapsulate ISDN D channel information. 4 z2 K; N: I! {# M& o G6 _+ ~5 ^. i& _% O
E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong
6 t5 X6 l4 x$ T2 X, S1 }to multiple dialer pools. ' s2 g* D' I2 \4 l6 s+ p
F. Dialer profiles cannot use ACLs to define interesting traffic.
7 ~: ^1 i; \' M; Z$ t& @5 U- BSCI
( T Z7 e3 H, ?! V* P$ {& z. u6.Which of the following is a characteristic of link-state protocols? & \6 Z% v0 z1 L I
A. A network topology change generates an 0update that is broadcast to every
& n! K2 C& m( Erouter on the network. + Z1 S6 \! f7 a( }
B. The periodic routing 0update interval is slightly different in each router on + ^) q9 A4 [' n W; X! P3 r' t
a subnet. 3 l7 u4 s- O' |% c6 o( Y- _* m
C. Each router creates a routing table that only includes its directly connected
% J& Z, [5 |9 A# V* h+ tneighbors. % ?# \6 m& R: l
D. Link-state protocols send routing 0updates only when there is a change in the
# o( o5 O+ L* M! r3 Lnetwork topology. 7.What is the term associated with synchronizing the routing tables after a |
发表于 2012-8-3 19:18:10
