IT 341 Chapter 1-6
To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used? 10.1.0.0 10.1.100.0 10.0.0.0 10.1.100.32
10.1.0.0
Which access method would be the most appropriate if you call your manager to tell him you cannot access your router in another city over the internet and he provides you with the information to access the router through a telephone connection? Console Telnet/SSH Aux
Aux
1. How does BYOD change the way in which businesses implement networks? BYOD provides flexibility in where and how users can access network resources. BYOD requires organizations to purchase laptops rather than desktops. BYOD users are responsible for their own network security, thus reducing the need for organizational security policies. BYOD devices are more expensive than devices that are purchased by an organization.
BYOD provides flexibility in where and how users can access network resources.
1. Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.) Incorrect. Try again. CTRL+Z disable enable end exit
CTRL+Z end
Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured? Console Telnet/SSH Aux
Console
Which access method would be most appropriate if your manager gave you a special cable and told you to use it to configure the switch? Console Telnet/SSH Aux
Console
Which two protocols are service discovery protocols? (Choose two.)
DNS DHCP
Which two protocols belong in the TCP/IP model application layer?
DNS DHCP
What is the process of converting information into the proper form for transmission? Formatting Encoding Encapsulation
Encoding
Which protocol operates at the network access layer of the TCP/IP model?
Ethernet
True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.
False
True or false? The right-most part of an IP address is used to identify the network that a device belongs to.
False
Which three are components of message timing? (Choose three.) Flow control Sequence numbers Access method Retransmit time Response timeout
Flow control Access method Response timeout
Which step of the communication process is concerned with properly identifying the address of the sender and receiver? Formatting Encoding Encapsulation
Formatting
Which three acronyms/initialisms represent standards organizations? (Choose three.)
IANA IEEE IETF
Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)
ICMPv4 ICMPv6
A device receives a data link frame with data and processes and removes the Ethernet information. What information would be the next to be processed by the receiving device?
IP at the internet layer
This standards organization is responsible for IP address allocation and domain name management.
Internet Assigned Numbers Authority (IANA)
This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.
Internet Engineering Task Force
Which statement is true about the running configuration file in a Cisco IOS device? It is automatically saved when the router reboots. It is stored in NVRAM. It affects the operation of the device immediately when modified. It should be deleted using the erase running-config command.
It affects the operation of the device immediately when modified
What is the function of the shell in an OS? It provides the intrusion protection services for the device. It interacts with the device hardware. It interfaces between the users and the kernel. It provides dedicated firewall services.
It interfaces between the users and the kernel.
1. What is an ISP? It is a standards body that develops cabling and wiring standards for networking. It is a networking device that combines the functionality of several different networking devices in one. It is a protocol that establishes how computers within a local network communicate. It is an organization that enables individuals and businesses to connect to the Internet.
It is an organization that enables individuals and businesses to connect to the Internet.
What is the Internet? It is a network based on Ethernet technology. It is a private network for an organization with LAN and WAN connections. It provides network access for mobile devices. It provides connections through interconnected global networks.
It provides connections through interconnected global networks.
Which delivery method is used to transmit information to one or more end devices, but not all devices on the network? Unicast Multicast Broadcast
Multicast
Which memory location on a Cisco router or switch stores the startup configuration file? ROM flash NVRAM RAM
NVRAM
Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)
Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits Data link layer addresses are physical and network layer addresses are logical Network layer addresses are either 32 or 128 bits in length
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? Reload the device and type yes when prompted to save the configuration. Copy the information in the startup configuration file to the running configuration. Copy the running configuration to the startup configuration file. 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.
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.
Which two statements are true regarding the user EXEC mode? (Choose two.) Interfaces and routing protocols can be configured. Only some aspects of the router configuration can be viewed. The device prompt for this mode ends with the ">" symbol. All router commands are available.
Only some aspects of the router configuration can be viewed. The device prompt for this mode ends with the ">" symbol.
Which memory location on a Cisco router or switch will lose all content when the device is restarted? ROM NVRAM flash RAM
RAM
Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)
Routing Protocols Messaging Internet Protocol
how to require a password before allowing access to the user EXEC mode hint: To secure user EXEC mode access, enter line console configuration mode using the line console 0 The zero is used to represent the first (and in most cases the only) console interface. Next, specify the user EXEC mode password using the password password command. Finally, enable user EXEC access using the login command.
Sw-Floor-1 (config)# Sw-Floor-1 (config)# configure terminal Sw-Floor-1 (config)# line console 0 Sw-Floor-1 (config-line)# password cisco Sw-Floor-1 (config-line)# login Sw-Floor-1 (config-line)# end Sw-Floor-1 #
To encrypt all plaintext passwords
Sw-Floor-1# configure terminal Sw-Floor-1(config)# service password-encryption Sw-Floor-1(config)#
create a banner message of the day on a network device to provide a method for declaring that only authorized personnel should attempt to access the device
Sw-Floor-1# configure terminal Sw-Floor-1(config)# banner motd #Authorized Access Only#
To secure privileged EXEC access for administrator access to all IOS commands including configuring a device hint: use the enable secret password global config command
Sw-Floor-1# configure terminal Sw-Floor-1(config)# enable secret class Sw-Floor-1(config)# exit Sw-Floor-1#
To access the switch remotely
Sw-Floor-1# configure terminal Sw-Floor-1(config)# interface vlan 1 Sw-Floor-1(config-if)# ip address 192.168.1.20 255.255.255.0 Sw-Floor-1(config-if)# no shutdown Sw-Floor-1(config-if)# exit Sw-Floor-1(config)# ip default-gateway 192.168.1.1
To secure VTY(Virtual terminal) lines access using Telnet or SSH to the device hint: enter line VTY mode using the line vty 0 15 global config command. Next, specify the VTY password using the password password command. Lastly, enable VTY access using the login command
Sw-Floor-1# configure terminal Sw-Floor-1(config)# line vty 0 15 Sw-Floor-1(config-line)# password cisco Sw-Floor-1(config-line)# login Sw-Floor-1(config-line)# end Sw-Floor-1#
Use the show running-config command to verify that passwords are now encrypted.
Sw-Floor-1(config)# end Sw-Floor-1# show running-config ! (Output omitted) ! line con 0 password 7 094F471A1A0A login ! line vty 0 4 password 7 094F471A1A0A login line vty 5 15 password 7 094F471A1A0A login ! ! end
how to name a device Switch- Floor-1 from privileged EXEC mode to access the global configuration mode
Switch# Switch # configure terminal Switch (config)# hostname Sw-Floor-1 Sw-Floor-1 (config)#
display for global config mode
Switch(config)#
This protocol is responsible for guaranteeing the reliable delivery of information.
TCP
Which access method would be the most appropriate in-band access to the IOS over a network connection? Console Telnet/SSH Aux
Telnet/SSH
What are two functions of end devices on a network? (Choose two.) They are the interface between humans and the communication network. They originate the data that flows through the network. They filter the flow of data to enhance security. They provide the channel over which the network message travels. They direct data over alternate paths in the event of link failures.
They are the interface between humans and the communication network. They originate the data that flows through the network.
True or false. Standards organizations are usually vendor-neutral.
True
True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway.
True
What is the default SVI on a Cisco switch? VLAN999 VLAN1 VLAN100 VLAN99
VLAN1
An employee wants to access the network of the organization remotely, in the safest possible way. What network feature would allow an employee to gain secure remote access to a company network? IPS BYOD ACL VPN
VPN
__________ are typically found in rural areas where DSL or cable access is not available. A dish or antenna on the property of the subscriber connects wirelessly to a WISP transmitter, eliminating the need for physical cabling outside the building.
Wireless Internet Service Providers (WISPs)
1. In which scenario would the use of a WISP be recommended? an apartment in a building with cable access to the Internet an Internet cafe in a city a farm in a rural area without wired broadband access any home with multiple wireless devices
a farm in a rural area without wired broadband access
1. Which device performs the function of determining the path that messages should take through internetworks? a web server a DSL modem a firewall a router
a router
Which functionality is provided by DHCP? translation of IP addresses to domain names remote switch management automatic assignment of an IP address to each host end-to-end connectivity test
automatic assignment of an IP address to each host
Which is the command to configure a banner to be displayed when connecting to a switch? banner $ Keep out $ banner motd $ Keep out $ display $ Keep out $ login banner $ Keep out $
banner motd $ Keep out $
A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe? video conferencing online collaboration cloud computing bring your own device
bring your own device
What type of communication will send a message to all devices on a local area network?
broadcast
Which message delivery option is used when all devices need to receive the same message simultaneously?
broadcast
Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) cellular satellite dedicated leased line DSL dialup
cellular satellite
Which protocol stack layer encapsulates data into frames?
data link
Which logical address is used for delivery of data to a remote network?
destination IP address
What is the order of the two addresses in the data link frame?
destination MAC, source MAC
Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) providing an error message when a wrong command is submitted displaying a list of all available commands within the current mode selecting the best command to accomplish a task 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
displaying a list of all available commands within the current mode determining which option, keyword, or argument is available for the entered command
What is the structure of an IPv4 address called? dotted-binary format dotted-decimal format dotted-hexadecimal format
dotted-decimal format
What types of standards are developed by the Electronics Industries Alliance (EIA)?
electric wiring and connectors
enter in global config mode
enable config t
How is the privileged EXEC mode access secured on a switch? enable class secret class enable secret class service password-encryption
enable secret class
What is the name of the process of adding protocol information to data as it moves down the protocol stack?
encapsulation
how to exit out of all sub-configuration modes and return to privileged EXEC mode
end or config t line console 0 CTRL +Z
to reenter the switch and get a command line interface, click ____
enter
how to return to global configuration mode from sub-configuration mode
exit
Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? intranet Internet extranet extendednet
extranet
A college is building a new dormitory on its campus. Workers are digging in the ground to install a new water pipe for the dormitory. A worker accidentally damages a fiber optic cable that connects two of the existing dormitories to the campus data center. Although the cable has been cut, students in the dormitories only experience a very short interruption of network services. What characteristic of the network is shown here? fault tolerance quality of service (QoS) integrity security scalability
fault tolerance
How is an IPv4 address represented? four binary numbers between 0 and 1 separated by colons. four decimal numbers between 0 and 255 separated by periods. thirty-two hexadecimal numbers separated by colons. thirty-two hexadecimal numbers separated by periods.
four decimal numbers between 0 and 255 separated by periods.
Which IOS mode are you in if the Switch(config)# prompt is displayed? global configuration mode interface subconfiguration mode line console subconfiguration mode privileged EXEC mode user EXEC mode
global configuration mode
What is the command to assign the name "Sw-Floor-2" to a switch? hostname Sw-Floor-2 host name Sw-Floor-2 name Sw-Floor-2
hostname Sw-Floor-2
how to access Interface Config mode for fastethernet 0/1
interface fastethernet 0/1
how to move from one sub-configuration mode to another
interface vlan 1
What are two benefits of using a layered network model? (Choose two.)
it prevents technology in one layer from affecting other layers it assists in protocol design
enter one of the subconfiguration modes to get into the management interface for the console port
line console 0
how to move directly to the line console zero
line console 0
how to go to virtual terminal management interfaces from global configuration mode for remote administrative access to the switch
line vty 0 15
Which command enables password authentication for user EXEC mode access on a switch? enable secret login secret service password-encryption
login
Which type of access is secured on a Cisco router or switch with the enable secret command? console line AUX port privileged EXEC virtual terminal
privileged EXEC
Which IOS mode allows access to all commands and features? global configuration mode interface subconfiguration mode line console subconfiguration mode privileged EXEC mode user EXEC mode
privileged EXEC mode
What is the general term that is used to describe a piece of data at any layer of a networking model?
protocol data unit
What is the purpose of protocols in data communications?
providing the rules for a specific type of communication to occur
BGP and OSPF are examples of which type of protocol?
routing
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users? reliability scalability quality of service accessibility
scalability
What is the PDU associated with the transport layer?
segment
What is the process of dividing a large data stream into smaller pieces prior to transmission?
segmentation
Which command encrypts all plaintext passwords access on a switch? enable secret login secret service password-encryption
service password-encryption
During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer? zero-day attack spyware DoS attack identity theft
spyware
What is used to determine the network portion of an IPv4 address?
subnet mask
What are two characteristics of a scalable network? (Choose two.) offers limited number of applications suitable for modular devices that allow for expansion grows in size without impacting existing users easily overloaded with increased traffic
suitable for modular devices that allow for expansion grows in size without impacting existing users
What type of interface has no physical port associated with it? console Ethernet serial switch virtual interface (SVI)
switch virtual interface (SVI)
1. What type of network must a home user access in order to do online shopping? a local area network an intranet an extranet the Internet
the Internet
When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.) the hostname should be written in all lower case characters the hostname should begin with a letter the hostname should contain no spaces the hostname should be fewer than 64 characters in length the hostname should end with a special character
the hostname should begin with a letter the hostname should contain no spaces the hostname should be fewer than 64 characters in length
In computer communication, what is the purpose of message encoding?
to convert information to the appropriate form for transmission
Why would a technician enter the command copy startup-config running-config? to remove all configurations from the switch to make a changed configuration the new startup configuration to copy an existing configuration into RAM to save an active configuration to NVRAM
to copy an existing configuration into RAM
What is the purpose of the sequencing function in network communication?
to uniquely label transmitted segments of data for proper reassembly by the receiver
UDP and TCP belong to which layer of the TCP/IP protocol?
transport
A router with a valid operating system contains a configuration file stored in NVRAM. The configuration file has an enable secret password but no console password. When the router boots up, which mode will display? privileged EXEC mode setup mode global configuration mode user EXEC mode
user EXEC mode
Which IOS mode are you in if the Switch> prompt is displayed? global configuration mode interface subconfiguration mode line console subconfiguration mode privileged EXEC mode user EXEC mode
user EXEC mode
