1What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?
(config)# service password-encryption
2To save time, IOS commands may be partially entered and then completed by typing which key or key combination?
Tab
3Why would a network administrator use the CLI of the Cisco IOS?
To add a password to a Cisco network device
4Which device acts as a gateway to allow hosts to send traffic to remote IP networks?
Local router
5What is encrypted with the enable secret command?
The privileged executive mode password
6What will a network administrator use to modify a configuration on a Cisco router?
IOS
7Which 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.
8Why would a technician enter the command copy startup-config running-config?
To copy an existing configuration into RAM
9A 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
10An 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 take effect immediately after pressing Enter.
11A 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.
12What command does a technician issue on a switch to display the exhibited output? (fastEthernet0/1 unassigned YES manual down)
show ip interface brief
13Which statement describes a feature of an IOS hostname configuration?
It does not allow spaces
14A _________ address is defined as a reserved address that routes packets back to the host
Loopback
15Refer 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.
16While 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?
Issue the reload command without saving the running configuration.
17Why is it important to configure a hostname on a device?
To identify the device during remote access (SSH or telnet)
18Which 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.
19What 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.
20A 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
21Which interface allows remote management of a Layer 2 switch?
The switch virtual interface
22What 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.
23Tab
Completes abbreviated commands and parameters
24Ctrl-R
Returns directly to the privileged EXEC mode
25Up Arrow
Scrolls backwards through previously entered commands
26Ctrl-Z
Cancels any command currently being entered and returns directly to privileged EXEC mode
27Ctrl-C
Redisplays, on a new line, the command currently being typed
28A 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?
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?
29What benefit does DHCP provide to a network?
Hosts can connect to the network and get an IP address without manual configuration.
30Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI?
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
31A router has a valid operating system and a configuration stored in NVRAM. When the router boots up, which mode will display?
User EXEC mode
32Which two features are characteristics of flash memory?
1. Flash provides nonvolatile storage. 2. The contents of flash may be overwritten.
33Passwords 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.
1. Privileged EXEC mode 2. VTY interface 3. Console interface
34Why would a Layer 2 switch need an IP address?
To enable the switch to be managed remotely
35What 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
36What command can be used on a Windows PC to see the IP configuration of that computer?
ipconfig
37Which statement is true about the running configuration file in a Cisco IOS device?
It affects the operation of the device immediately when modified.
38Which two characters are allowed as part of the hostname of a Cisco device?
1. Numbers 2. Underline
39A 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.
40What is the function of the kernel of an operating software?
The kernel provisions hardware resources to meet software requirements.
41Which command or key combination allows a user to return to the previous level in the command hierarchy?
exit
42What 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.
43Which interface is the default SVI on a Cisco switch?
VLAN 1
44A 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?
The PC was preconfigured to use DHCP.