1 - 3 Flashcards
1 An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access?
an intranet
the Internet
an extranet
a local area network
an intranet
Intranet is a term used to refer to a private connection of LANs and WANs that belongs to an organization. An intranet is designed to be accessible only by the organization’s members, employees, or others with authorization.
2 Which statement describes the use of powerline networking technology?
- New “smart” electrical cabling is used to extend an existing home LAN.
- A home LAN is installed without the use of physical cabling.
- A device connects to an existing home LAN using an adapter and an existing electrical outlet.
- Wireless access points use powerline adapters to distribute data through the home LAN
A device connects to an existing home LAN using an adapter and an existing electrical outlet.
Powerline networking adds the ability to connect a device to the network using an adapter wherever there is an electrical outlet. The network uses existing electrical wiring to send data. It is not a replacement for physical cabling, but it can add functionality in places where wireless access points cannot be used or cannot reach devices.
3 Match the requirements of a reliable network with the supporting network architecture. (Not all options are used.)
- fault tollerance - provide redundant links and devices.
- scalability - expand the network without degrading the service for existing users.
- security - protect the network from unauthorised access
.
4 A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that patients can see the medical records data of other patients. Which of the four network characteristics has been violated in this situation?
fault tolerance scalability security Quality of Service (QoS) reliability
security
Network security includes protecting the confidentiality of data that is on the network. In this case, because confidential data has been made available to unauthorized users, the security characteristic of the network has failed.
5 Match each characteristic to its corresponding Internet connectivity type
.satellite - not suitable for heavily wooded areas
.cable - uses coaxial cable as a medium
.dialup telephone - typically has a very low bandwidth
.dsl - high bandwidth connection that runs over a telephone line.
DSL is an always-on, high bandwidth connection that runs over telephone lines. Cable uses the same coaxial cable that carries television signals into the home to provide Internet access. Dialup telephone is much slower than either DSL or cable, but is the least expensive option for home users because it can use any telephone line and a simple modem. Satellite requires a clear line of sight and is affected by trees and other obstructions. None of these typical home options use dedicated leased lines such as T1/E1 and T3/E3.
6 What two criteria are used to help select a network medium from various network media? (Choose two.)
- the types of data that need to be prioritized
- the cost of the end devices utilized in the network
- the distance the selected medium can successfully carry a signal
- the number of intermediate devices installed in the network
- the environment where the selected medium is to be installed
*the distance the selected medium can successfully carry a signal
the environment where the selected medium is to be installed
Criteria for choosing a network medium are the distance the selected medium can successfully carry a signal, the environment in which the selected medium is to be installed, the amount of data and the speed at which the data must be transmitted, and the cost of the medium and its installation.
7 What type of network traffic requires QoS?
email
on-line purchasing
video conferencing
wiki
video conferencing
Video conferencing utilizes real-time audio and video communications. Both of these are time-sensitive and bandwidth-intensive forms of communication that require quality of service to be active on the network. QoS will ensure an uninterrupted user experience.
8 A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.)
implementing a firewall
installing a wireless network
installing antivirus software
implementing an intrusion detection system
adding a dedicated intrusion prevention device
implementing a firewall
installing antivirus software
Technically complex security measures such as intrusion prevention and intrusion prevention systems are usually associated with business networks rather than home networks. Installing antivirus software, antimalware software, and implementing a firewall will usually be the minimum requirements for home networks. Installing a home wireless network will not improve network security, and will require further security actions to be taken.
9 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.)
VTY interface console interface Ethernet interface boot IOS mode privileged EXEC mode router configuration mode
VTY interface
console interface
privileged EXEC mode
Access to the VTY and console interfaces can be restricted using passwords. Out-of-band management of the router can be restricted in both user EXEC and privileged EXEC modes.
10 Which interface allows remote management of a Layer 2 switch?
the AUX interface
the console port interface
the switch virtual interface
the first Ethernet port interface
the switch virtual interface
In a Layer 2 switch, there is a switch virtual interface (SVI) that provides a means for remotely managing the device.
11 What function does pressing the Tab key have when entering a command in IOS?
It aborts the current command and returns to configuration mode.
It exits configuration mode and returns to user EXEC mode.
It moves the cursor to the beginning of the next line.
It completes the remainder of a partially typed word in a command.
It completes the remainder of a partially typed word in a command.
Pressing the Tab key after a command has been partially typed will cause the IOS to complete the rest of the command.
12 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?
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.
Issue the reload command without saving the running configuration.
The technician does not want to make any mistakes trying to remove all the changes that were done to the running configuration file. The solution is to reboot the router without saving the running configuration. The copy startup-config running-config command does not overwrite the running configuration file with the configuration file stored in NVRAM, but rather it just has an additive effect.
13 An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to restart the ping process
to interrupt the ping process
to exit to a different configuration mode
to allow the user to complete the command
to interrupt the ping process
To interrupt an IOS process such as ping or traceroute , a user enters the Ctrl-Shift-6 key combination. Tab completes the remainder of parameters or arguments within a command. To exit from configuration mode to privileged mode use the Ctrl-Z keystroke. CTRL-R will redisplay the line just typed, thus making it easier for the user to press Enter and reissue the ping command.
14 Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode?
letmein
secretin
lineconin
linevtyin
lineconin
Telnet accesses a network device through the virtual interface configured with the line VTY command. The password configured under this is required to access the user EXEC mode. The password configured under the line console 0 command is required to gain entry through the console port, and the enable and enable secret passwords are used to allow entry into the privileged EXEC mode.
15 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? Telnet access SVI password encryption physical switchport access
SVI
For a switch to have an IP address, a switch virtual interface must be configured. This allows the switch to be managed remotely over the network.
16 Which command or key combination allows a user to return to the previous level in the command hierarchy?
end
exit
Ctrl-Z
Ctrl-C
exit
End and CTRL-Z return the user to the privileged EXEC mode. Ctrl-C ends a command in process. The exit command returns the user to the previous level.
17 What are two characteristics of RAM on a Cisco device? (Choose two.)
-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.
The configuration that is actively running on the device is stored in RAM.
The contents of RAM are lost during a power cycle.
RAM stores data that is used by the device to support network operations. The running configuration is stored in RAM. This type of memory is considered volatile memory because data is lost during a power cycle. Flash memory stores the IOS and delivers a copy of the IOS into RAM when a device is powered on. Flash memory is nonvolatile since it retains stored contents during a loss of power.
18 Which two host names follow the guidelines for naming conventions on Cisco IOS devices? (Choose two.)
Branch2! RM-3-Switch-2A4 Floor(15) HO Floor 17 SwBranch799
RM-3-Switch-2A4
SwBranch799
Answers Explanation & Hints: Some guidelines for naming conventions are that names should:Start with a letter Contain no spaces End with a letter or digit Use only letters, digits, and dashes Be less than 64 characters in length
19 How is SSH different from Telnet?
SSH makes connections over the network, whereas Telnet is for out-of-band access.
SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.
SSH requires the use of the PuTTY terminal emulation program. Tera Term must be used to connect to devices through the use of Telnet.
SSH must be configured over an active network connection, whereas Telnet is used to connect to a device from a console connection.
SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.
Answers Explanation & Hints:
SSH is the preferred protocol for connecting to a device operating system over the network because it is much more secure than Telnet. Both SSH and Telnet are used to connect to devices over the network, and so are both used in-band. PuTTY and Terra Term can be used to make both SSH and Telnet connections.
20 An administrator is configuring a switch console port with a password. In what order will the administrator travel through the IOS modes of operation in order to reach the mode in which the configuration commands will be entered? (Not all options are used.)
first mode - user EXEC mode
second mode - privileged EXEC mode
third mode - global configuration mode
final mode - line configuration mode
Answers Explanation & Hints:
The configuration mode that the administrator first encounters is user EXEC mode. After the enable command is entered, the next mode is privileged EXEC mode. From there, the configure terminal command is entered to move to global configuration mode. Finally, the administrator enters the line console 0 command to enter the mode in which the configuration will be entered.
21 What are three characteristics of an SVI? (Choose three.)
It is designed as a security protocol to protect switch ports.
It is not associated with any physical interface on a switch.
It is a special interface that allows connectivity by different types of media.
It is required to allow connectivity by any device at any location.
It provides a means to remotely manage a switch.
It is associated with VLAN1 by default.
It is not associated with any physical interface on a switch.
It provides a means to remotely manage a switch.
It is associated with VLAN1 by default.
Answers Explanation & Hints:
Switches have one or more switch virtual interfaces (SVIs). SVIs are created in software since there is no physical hardware associated with them. Virtual interfaces provide a means to remotely manage a switch over a network that is using IP. Each switch comes with one SVI appearing in the default configuration “out-of-the-box.” The default SVI interface is VLAN1.
22 What command is used to verify the condition of the switch interfaces, including the status of the interfaces and a configured IP address?
ipconfig
ping
traceroute
show ip interface brief
show ip interface brief
Answers Explanation & Hints:
The show ip interface brief command is used to display a brief synopsis of the condition of the device interfaces. The ipconfig command is used to verify TCP/IP properties on a host. The ping command is used to verify Layer 3 connectivity. The traceroute command is used to trace the network path from source to destination.
24 Match the definitions to their respective CLI hot keys and shortcuts
displays next screen - space
scrolls backwards through previously entered commands - up arrow
provides context sensitive text - ?
completes abbreviated commands and parameters - tab
aborts commands such as trace and ping - ctr shift 6
Answers Explanation & Hints:
The shortcuts with their functions are as follows:
– Tab – Completes the remainder of a partially typed command or keyword
– Space bar – displays the next screen
– ? – provides context-sensitive help
– Up Arrow – Allows user to scroll backward through former commands
– Ctrl-C – cancels any command currently being entered and returns directly to privileged EXEC mode
– Ctrl-Shift-6 – Allows the user to interrupt an IOS process such as ping or traceroute
25 In the show running-config command, which part of the syntax is represented by running-config?
the command
a keyword
a variable
a prompt
a keyword
Answers Explanation & Hints:
The first part of the syntax, show , is the command, and the second part of the syntax, running-config, is the keyword. The keyword specifies what should be displayed as the output of the show command.
26 After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?
The new configuration will be stored in flash memory.
The new configuration will be loaded if the switch is restarted.
The current IOS file will be replaced with the newly configured file.
The configuration changes will be removed and the original configuration will be restored.
The new configuration will be loaded if the switch is restarted.
Answers Explanation & Hints:
With the copy running-config startup-config command, the content of the current operating configuration replaces the startup configuration file stored in NVRAM. The configuration file saved in NVRAM will be loaded when the device is restarted.
27 What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?
(config)# enable password secret
(config)# enable secret Secret_Password
(config-line)# password secret
(config)# service password-encryption
(config)# enable secret Encrypted_Password
(config)# service password-encryption
Answers Explanation & Hints:
To prevent all configured passwords from appearing in plain text in configuration files, an administrator can execute the service password-encryption command. This command encrypts all configured passwords in the configuration file.
28 A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?
- This command encrypts passwords as they are transmitted across serial WAN links.
- This command prevents someone from viewing the running configuration passwords.
- This command enables a strong encryption algorithm for the enable secret password command.
- This command automatically encrypts passwords in configuration files that are currently stored in NVRAM.
- This command provides an exclusive encrypted password for external service personnel who are required to do router maintenance.
This command prevents someone from viewing the running configuration passwords.
Answers Explanation & Hints:
The startup-config and running-config files display most passwords in plaintext. Use the service password-encryption global config command to encrypt all plaintext passwords in these files.
