Scenario 31 Configuring Dns Tftp Ntp and SNMP

This scenario uses a configuration taken from a working Cisco IOS router and tests your skills with DNS, TFTP, NTP, and SNMP. Example 3-12 displays the configuration of a Cisco router named R1.

Example 3-12 R1 Running Configuration

version 12.1

hostname R1

clock timezone UTC 10 i

no ip domain-lookup

ip domain-name cisco.com

ip host CCIE 131.108.1

.1

ip host Router3 131.10

8.1.3

ip host Router2 131.10

8.1.2

ip host Router1 131.10

8.1.1

ip name-server 131.108

.255.1

ip name-server 131.108

.255.2

interface Ethernet0/0

i

1 255.255.255.0

interface Serial0/0

ip address 131.108.255.1 255.255.255.252

ntp broadcast i

no ip http server

snmp-server community

public

snmp-server community

publiC

snmp-server host 131.1

08.255

i

ntp authentication-key

1 md5

121A061E17 7

ntp authenticate

ntp trusted-key 1

ntp master 1

ntp peer 131.108.2.1 key 1

end

Scenario 3-1: Configuring DNS, TFTP, NTP, and SNMP 141

1 What happens when a network administrator types the host name Router1 at the router prompt? (Select the best two answers.)

a. DNS queries are disabled; nothing will be translated.

b. The name Router1 is mapped to the IP address 131.108.1.1.

c. The administrator could also type CCIE to reach the same IP address (131.108.1.1).

d. Because DNS is disabled with the command no ip domain-lookup, the router assumes this is an invalid IOS command and returns the error "% Unknown command or computer name, or unable to find computer address."

e. Local DNSs are case-sensitive so you can only type Router1 to map to 131.108.1.1.

2 The following commands are entered on the router named R1. What are the TFTP server address and TFTP filename stored on the router on board flash?

R1#copy tftp flash

Address or name of remote host []? 150.100.1.253

Source filename []? c2600-jo3s56i-mz.121-5.T10.bin

Destination filename [c2600-jo3s56i-mz.121-5.T10.bin]? c2600-c1

3 R1 supplies an NTP clock source to a remote router. What is the NTP's peer IP address, and what is the MD5 password used to ensure that NTP sessions are authenticated?

4 What is the SNMP read-write access community string for the following configuration?

snmp-server community public RO snmp-server community public RW

0 0

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