CCIE模拟试题
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.)
A. SMTP B. STP C. FTP D. Telnet E. HTTP F. POP3
2.One of the trainees assigned to you want to know which services use TCP. W
hat can you tell him? (Select three options.)
A. DHCP B. SMTP C. SNMP D. FTP E. HTTPF. TFTP
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?
A. /38 B. /30 C. /27 D. /23 E. /18
4.How would you configure a router to avoid situations such as split horizon
issues hampering routing updates on a Frame Relay network?
A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet
assigned to the subinterface.
B. Configure each Frame Relay circuit as a point-to-point line to support multicast
and broadcast traffic.
C. Configure one sub-interface to disperse into multiple PVC connections to
multiple remote router interfaces.
D. Configure as many as possible sub-interfaces on the same subnet.
5.With regard to ISDN, which of the following are true? (Choose all that apply.)
A. Legacy DDR can use port information to define interesting traffic.
B. Legacy DDR can configure multiple dialer configurations on the same interface.
C. Legacy DDR can use ACLs to define interesting traffic.
D. HDLC or PPP can be used to encapsulate ISDN D channel information.
E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong
to multiple dialer pools.
F. Dialer profiles cannot use ACLs to define interesting traffic.
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