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16: Initial Router Con guration
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1 A and B POST, ROMMON, the Mini-IOS, and the bootstrap program are in ROM C is incorrect because the configuration file is stored in NVRAM, and D is a nonexistent file 2 C RAM contents are erased when you turn off the device A, B, and D are incorrect; NVRAM, ROM, and flash maintain their contents when the device is turned off
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3 D Use the show version command to view the configuration register value A is a nonexistent command B is incorrect because show interfaces shows only interface statistics C is the old command version for show startup-config 4 Enter the config-register 0x2142 command in Configuration mode to cause the router to boot up and not load the configuration file in NVRAM
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5 A AutoSecure can be run manually only from Privilege EXEC mode with the auto secure command B, C, and D are incorrect
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6 The router s configuration will look like this: interface serial0/0 ip address 1921681130 255255255252 clock rate 64000 bandwidth 64 no shutdown 7 The ip subnet-zero command allows you to use the first and last subnet when configuring IP addresses on interfaces of your router 8 show ip interface brief
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9 C Trunking with a router-on-a-stick is done on subinterfaces Hardware characteristics are configured on A (physical interfaces) when trunking, not VLANs Sometimes the term in B (major interfaces) is used to refer to a physical interface 10 B Use the encapsulation command to specify the trunking encapsulation and the VLAN number for the subinterface A, C, and D are nonexistent router commands
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IOS Device Management
CERTIFICATION OBJECTIVES
1701 1702 1703 1704 Router Configuration Files Changes in Your Network IOS Image Files Remote Access to Your IOS Device 1705 Basic Troubleshooting Two-Minute Drill Self-Test
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17: IOS Device Management
his chapter covers important IOS features that you can use to manage your IOS device Many of these features are supported across all IOS devices, but some of them are supported on only certain devices This chapter offers an in-depth discussion of configuration files It also discusses how to upgrade your IOS device and remotely access it via the Secure Shell (SSH)You can use many tools on your IOS device for troubleshooting connection problems, including the Cisco Discovery Protocol (CDP), ping, traceroute, telnet, and debug These tools are discussed at the end of the chapter
CERTIFICATION OBJECTIVE 1701
Router Configuration Files
You had a basic introduction to configuration files in 11 Remember that a configuration file contains the commands used to configure an IOS device Configuration files are typically located in one of three places: RAM, NVRAM, and/or an external server, such as a TFTP, FTP, HTTP, or secure copy (SCP) server The configuration that the router is currently using is in RAM You can back up, or save, this configuration either to NVRAM or an external server As you may recall from 11, the commands related to configuration files, even show commands, require you to be at Privilege EXEC mode Also, the running configuration of an IOS device is not automatically saved to NVRAM you must manually do this with the copy running-config startup-config command The following sections show you how to manipulate your configuration files
Saving Con guration Files
11 explained how to save your configuration from RAM to NVRAM with the copy running-config startup-config command When you execute this command, whatever filename (the default is startup-config) you are copying to in NVRAM is completely overwritten If you want to keep an old copy and a newer one in NVRAM, you ll need to specify a name other than startup-config Note that the copy command has two parameters: The first parameter refers to where the source information is (what you want to copy it from), and the second parameter refers to where the destination is (where you want to copy it to)
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