CCNA # w. L( r5 `+ H2 L; t0 _
1.Which of the following types of packets will be allowed entry when a serial interface’s inbound access list has been configured to prohibit entry for TCP and UDP ports 21, 23 and 25? (Select three options.) 1 \( ]/ i( Q2 l
A. SMTP
7 `& {& x9 S! N, T5 v& i1 \B. STP
; A6 g; s5 R3 B. AC. FTP
5 v+ T5 T3 E) O' E+ H- U1 WD. Telnet
: m i- W% @6 uE. HTTP
% c& w" o c" PF. POP3 ; ]: f" e# t1 Q( `3 ~' |; T
2.One of the trainees assigned to you want to know which services use TCP. What can you tell him? (Select three options.) ; i+ y, Y5 Z# @& t+ l; ~
A. DHCP # }# z% `5 T! D/ X K9 b
B. SMTP 8 l4 q3 W* |# d* |- j& i
C. SNMP
; x2 T/ x# H$ L/ `# BD. FTP $ i! ]2 v/ `% F+ j7 @
E. HTTP
* K: H1 Q' O tF. TFTP 8 f! [1 `4 C+ {4 h
3.Which of the following network masks would you use to reduce any wastage of IP addresses in point-to- point WAN links on a network that supports VLSM? 5 H" [& M Q$ B. s0 U+ ?
A. /38 . m/ a* j7 C6 w* T1 N
B. /30
3 g, R+ R& d z* f: gC. /27 9 ^, u7 }- V! b8 `
D. /23
( R0 |1 r( b, ?# Z# `E. /18
5 B {2 k( k7 V- G( Q4.How would you configure a router to avoid situations such as split horizon issues hampering routing updates on a Frame Relay network? (www．Examw.com)
- D4 U9 e* ` f* G1 ?. hA. Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the subinterface. , L) s' |8 K5 s; W& p1 _9 I1 q
B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic. - D! \5 l: v U. \4 X' o) l
C. Configure one sub-interface to disperse into multiple PVC connections to multiple remote router interfaces.
: E, o6 E; }# tD. Configure as many as possible sub-interfaces on the same subnet.
7 q8 | K* L- E& z' N5.With regard to ISDN, which of the following are true? (Choose all that apply.)
0 o- v0 T4 Y: j3 s( hA. Legacy DDR can use port information to define interesting traffic. ) n' b& `/ z4 r
B. Legacy DDR can configure multiple dialer configurations on the same interface.
5 i9 p! B: k3 e' Q# `C. Legacy DDR can use ACLs to define interesting traffic.
6 e& a& m, r; Y! T7 yD. HDLC or PPP can be used to encapsulate ISDN D channel information. + m2 i3 U8 B) @$ O4 n
E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong to multiple dialer pools.
3 [* \( N$ \& k2 _F. Dialer profiles cannot use ACLs to define interesting traffic. |
发表于 2012-8-3 19:18:10
