CHAPTER 2

Telnet Console AUX SSH ***

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

Reboot the device. Enter CTRL-Z at the privileged mode prompt. Exit global configuration mode. Power cycle the device. Exit privileged EXEC mode and press Enter. ***

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

global configuration mode setup mode privileged EXEC mode user EXEC mode ***

A router has a valid operating system and a configuration file stored in NVRAM. The configuration file contains an enable secret password but no console password. When the router boots up, which mode will display?

The PC does not require any additional information to function on the network. The PC came preconfigured with IP addressing information from the factory. The PC was preconfigured to use DHCP. *** The PC used DNS to automatically receive IP addressing information from a server. The PC virtual interface is compatible with any network.

A technician is adding a new PC to a LAN. After unpacking the components and making all the connections, the technician starts the PC. After the OS loads, the technician opens a browser, and verifies that the PC can reach the Internet. Why was the PC able to connect to the network with no additional configuration?

It encrypts passwords as they are sent across the network. It encrypts passwords that are stored in router or switch configuration files. *** It requires that a user type encrypted passwords to gain console access to a router or switch. It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet.

How does the service password-encryption command enhance password security on Cisco routers and switches?

VTY interface ** console interface ** Ethernet interface boot IOS mode privileged EXEC mode ** router configuration mode

Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

to display a message when a user accesses the switch *** to configure switch SW1 so that only the users in the Admin group can telnet into SW1 to force users of the Admin group to enter a password for authentication to configure switch SW1 so that the message will display when a user enters the enable command

Refer to the exhibit. A network administrator is configuring the MOTD on switch SW1. What is the purpose of this command?

RAM provides nonvolatile storage. The configuration that is actively running on the device is stored in RAM. *** The contents of RAM are lost during a power cycle. *** RAM is a component in Cisco switches but not in Cisco routers. RAM is able to store multiple versions of IOS and configuration files.

What are two characteristics of RAM on a Cisco device? (Choose two.)

Hosts always have the same IP address and are therefore always reachable. DHCP allows users to refer to locations by a name rather than an IP address. Hosts can connect to the network and get an IP address without manual configuration. *** Duplicate addresses cannot occur on a network that issues dynamic addresses using DHCP and has static assignments.

What benefit does DHCP provide to a network?

ping ipconfig *** show interfaces show ip interface brief

What command can be used on a Windows PC to see the IP configuration of that computer?

Each IP address must match the address that is assigned to the host by DNS. Each IP address must be unique within the local network. *** Each IP address needs to be compatible with the MAC address. Each local host should be assigned an IP address with a unique network component.

What criterion must be followed in the design of an IPv4 addressing scheme for end devices?

The command encrypts the banner message. The command encrypts the enable mode password. All passwords in the configuration are not shown in clear text when viewing the configuration. ** A network administrator who later logs into the device will be required to enter an administrator password in order to gain access to the Cisco device.

What is a result of using the service password-encryption command on a Cisco network device?

if the TCP/IP stack is functioning on the PC without putting traffic on the wire if there is connectivity with the destination device *** the path that traffic will take to reach the destination what type of device is at the destination

What is a user trying to determine when issuing a ping 10.1.1.1 command on a PC?

It provides a user interface that allows users to request a specific task. The kernel links the hardware drivers with the underlying electronics of a computer. It is an application that allows the initial configuration of a Cisco device. The kernel provisions hardware resources to meet software requirements. ***

What is the function of the kernel of an operating software?

end exit *** Ctrl-Z Ctrl-C

Which command or key combination allows a user to return to the previous level in the command hierarchy?

the IOS image copied into RAM the bootstrap program in the ROM the contents of the current running configuration file in the RAM the contents of the saved configuration file in the NVRAM ***

Which information does the show startup-config command display?

the AUX interface the console port interface the switch virtual interface *** the first Ethernet port interface

Which interface allows remote management of a Layer 2 switch?

FastEthernet 0/1 GigabitEthernet 0/1 VLAN 1 *** VLAN 99

Which interface is the default SVI on a Cisco switch?

Use Telnet to remotely access the switch through the network. Use the console port to locally access the switch from a serial or USB interface of the PC. *** Use Secure Shell to remotely access the switch through the network. Use the AUX port to locally access the switch from a serial or USB interface of the PC.

Which procedure is used to access a Cisco 2960 switch when performing an initial configuration in a secure environment?

It affects the operation of the device immediately when modified. *** It is stored in NVRAM. It should be deleted using the erase running-config command. It is automatically saved when the router reboots

Which statement is true about the running configuration file in a Cisco IOS device?

numbers ** question mark space tab dash **

Which two characters are allowed as part of the hostname of a Cisco device?

providing an error message when a wrong command is submitted displaying a list of all available commands within the current mode *** allowing the user to complete the remainder of an abbreviated command with the TAB key determining which option, keyword, or argument is available for the entered command *** selecting the best command to accomplish a task

Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.)

Branch2! RM-3-Switch-2A4 *** Floor(15) HO Floor 17 SwBranch799 ***

Which two host names follow the guidelines for naming conventions on Cisco IOS devices? (Choose two.)

Issue the reload command without saving the running configuration. *** Delete the vlan.dat file and reboot the device. Close and reopen the terminal emulation software. Issue the copy startup-config running-config command.

While trying to solve a network issue, a technician made multiple changes to the current router configuration file. The changes did not solve the problem and were not saved. What action can the technician take to discard the changes and work with the file in NVRAM?

a Cisco router or switch only begins to operate when its hostname is set a hostname must be configured before any other parameters to identify the device during remote access (SSH or telnet) *** to allow local access to the device through the console port

Why is it important to configure a hostname on a device

to enable the switch to send broadcast frames to attached PCs to enable the switch to function as a default gateway to enable the switch to be managed remotely *** to enable the switch to receive frames from attached PCs

Why would a Layer 2 switch need an IP address?