CCNA Chapter 2

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

(config)# service password-encryption

To save time, IOS commands may be partially entered and then completed by typing which key or key combination?

Tab

Why would a network administrator use the CLI of the Cisco IOS?

to add a password to a Cisco network device

Which device acts as a gateway to allow hosts to send traffic to remote IP networks?

local router

What is encrypted with the enable secret command?

the privileged executive mode password

What will a network administrator use to modify a configuration on a Cisco router?

IOS

Which two statements are true regarding the user EXEC mode?

1. This is the default mode on an unconfigured router when first powered up.
2. Only some aspects of the router configuration can be viewed.

Why would a technician enter the command copy startup-config running-config?

to copy an existing configuration into RAM

A technician configures a switch with these commands:
SwitchA(config)# interface vlan 1
SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0
SwitchA(config-if)# no shutdown
What is the technician configuring?

SVI

An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device?

Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed.

A network administrator has forgotten the argument of an IOS command. How would the administrator get help from the IOS CLI to complete the command correctly?

Type the command and then press the ? key.

What command does a technician issue on a switch to display the exhibited output? (fastEthernet0/1 unassigned YES manual down)

show ip interface brief

Which statement describes a feature of an IOS hostname configuration?

It does not allow spaces

A _________ address is defined as a reserved address that routes packets back to the host

loopback

Refer to the exhibit. A switch was configured as shown. A ping to the default gateway was issued, but the ping was not successful. Other switches in the same network can ping this gateway. What is a possible reason for this?

The no shutdown command was not issued for VLAN 1.

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

Issue the reload command without saving the running configuration.

Why is it important to configure a hostname on a device?

to identify the device during remote access (SSH or telnet)

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

Use the console port to locally access the switch from a serial or USB interface of the PC.

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

Each IP address must be unique within the local network.

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?

SSH

Which interface allows remote management of a Layer 2 switch?

the switch virtual interface

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

All passwords in the configuration are not shown in clear text when viewing the configuration.

Tab

Completes abbreviated commands and parameters

Ctrl-R

returns directly to the privileged EXEC mode

Up Arrow

scrolls backwards through previously entered commands

Ctrl-Z

cancels any command currently being entered and returns directly to privileged EXEC mode

Ctrl-C

Redisplays, on a new line, the command currently being typed

A network administrator is planning an IOS upgrade on several of the head office routers and switches. Which three questions must be answered before continuing with the IOS selection and upgrade? (Choose three.)

1. What models of routers and switches require upgrades?
2. Do the routers and switches have enough RAM and flash memory for the proposed IOS versions?
3. What features are required for the devices?

What benefit does DHCP provide to a network?

Hosts can connect to the network and get an IP address without manual configuration.

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

1. displaying a list of all available commands within the current mode
2. determining which option, keyword, or argument is available for the entered command

A router has a valid operating system and a configuration stored in NVRAM. When the router boots up, which mode will display?

user EXEC mode

Which two features are characteristics of flash memory?

1. Flash provides nonvolatile storage.
2. The contents of flash may be overwritten.

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.)

1. privileged EXEC mode
2. VTY interface
3. console interface

Why would a Layer 2 switch need an IP address?

to enable the switch to be managed remotely

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

if there is connectivity with the destination device

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

ipconfig

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

It affects the operation of the device immediately when modified.

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

1. numbers
2. underline

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?

Exit privileged EXEC mode and press Enter.

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

The kernel provisions hardware resources to meet software requirements.

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

exit

What are two characteristics of RAM on a Cisco device?

1. The configuration that is actively running on the device is stored in RAM.
2. The contents of RAM are lost during a power cycle.

Which interface is the default SVI on a Cisco switch?

VLAN 1

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

The PC was preconfigured to use DHCP.