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折扣号考试42007-09-30 10:44:00

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  Close Window Assessment System   1. Assessment Selection     2. Assessment Settings     3. Take Assessment   Take Assessment - Voucher Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 46 In an effort to minimize traffic, an administrator decided to keep web traffic from causing the ISDN link to come up by denying WWW traffic to the 192.168.20.5 remote server. Two minutes after making changes to the configuration as shown in the graphic, the administrator notices that web traffic is still passing over the link. What is the most likely cause of the problem? The dialer-group has not been applied to outbound traffic. The access-list is incorrectly configured. Broadcasts are creating "interesting" traffic and keeping the link active. The command ip access-group 128 out is missing from the bri0/0 interface. 47 Which address does a bridge use to build its bridging table? destination IP address destination MAC address source IP address source MAC address 48 What is the default ISDN encapsulation used on Cisco ISDN routers? SLIP PPP HDLC VPP 49 What is the purpose of the IOS enable secret command? to set password protection on incoming Telnet sessions to set password protection on the console terminal to allow a user access to User mode to allow a user to enter a password that will be encrypted 50 Which of the following improves security in PPP authentication? LCP NCP CHAP PAP 51 How many bits are in IPv6 addresses? 16 32 64 96 128 258 52 What is the term for the cabling that connects the customer premises equipment to the CO switch? demarc local loop final mile DTE trunk line 53 What enables routers to learn of destination networks? proxy ARP CAM table exchanges host name tables routing protocols DNS lookups 54 Which reason is correct for having at least one true condition in an ACL? If there is not a true statement, all packets are returned to the sender. The implicit "deny any" statement will deny all traffic. True conditions only test the status of the router. You are not required to have a true statement in ACL. 55 What is the name of that point in a LAN where the responsibility of the network administrator ends and the responsibility of the telco begins? point of presence local loop DTE demarcation 56 Which of the following are functions of a WAN? (Choose three.) permit real-time communication between users allow users access to high bandwidth provide full-time local service provide e-mail and e-commerce services connect physically adjacent devices provide access to computers in other locations 57 All the routers in the network shown in the graphic are part of the same OSPF area. All the routers were powered up simultaneously, except Router E, which was brought online the following day. Which router will be the BDR after the network has converged? Router A Router B Router C Router D Router E 58 Which type of ACL only checks the source address? Extended ACL General ACL Source ACL Standard ACL 59 When using distance-vector routing protocols in a frame relay environment with multiple DLCIs on a single physical router interface, split-horizon issues must be resolved. According to Cisco best practices, what should be configured to manage these issues? a single network address multiple LMIs subinterfaces multiple IP addresses on the same subnet 60 Which fields are common to the TCP and the UDP segments? (Choose two.) source address sequence number acknowledgement number options checksum destination port Showing 4 of 5 <Prev Page: Introduction 1 2 3 4 5 Submit Next> Close Window All content copyright 1992-2007 Cisco Systems, Inc. Privacy Statement  and  Trademarks.

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