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WorksheetsNWC204 module 1-2-3
Total questions: 100
Worksheet time: 54mins
Which of the following is the name for all computers connected to a network that participate directly in network communication?
Servers
Intermediary devices
Hosts
Media
Question 2
When data is encoded as pulses of light, which media is being used to transmit the data?
Wireless
Fiber-optic cable
Copper cable
Question 3
Which two devices are intermediary devices? (Choose two)
Hosts
Routers
Servers
Switches
Which network infrastructure provides access to users and end devices in a small geographical area, which is typically a network in a department in an enterprise, a home, or small business?
Extranet
Intranet
LAN
WAN
Which network infrastructure might an organization use to provide secure and safe access to individuals who work for a different organization but require access to the organization’s data?
Extranet
Intranet
LAN
WAN
Which network infrastructure provides access to other networks over a large geographical area, which is often owned and managed by a telecommunications service provider?
Extranet
Intranet
LAN
WAN
When designers follow accepted standards and protocols, which of the four basic characteristics of network architecture is achieved?
Fault tolerance
Scalability
QoS
Security
Confidentiality, integrity, and availability are requirements of which of the four basic characteristics of network architecture?
Fault tolerance
Scalability
QoS
Security
With which type of policy, a router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion?
Fault tolerance
Scalability
QoS
Security
Having multiple paths to a destination is known as redundancy. This is an example of which characteristic of network architecture?
Fault tolerance
Scalability
QoS
Security
Which feature is a good conferencing tool to use with others who are located elsewhere in your city, or even in another country?
BYOD
Video communications
Cloud computing
Which feature describes using personal tools to access information and communicate across a business or campus network?
BYOD
Video communications
Cloud computing
Which feature contains options such as Public, Private, Custom and Hybrid?
BYOD
Video communications
Cloud computing
Which feature is being used when connecting a device to the network using an electrical outlet?
Smart home technology
Powerline
Wireless broadband
Which feature uses the same cellular technology as a smartphone?
Smart home technology
Powerline
Wireless broadband
Which attack slows down or crashes equipment and programs?
Firewall
Virus, worm, or Trojan horse
Zero-day or Zero-hour
Virtual Private Network (VPN)
Denial of Service (DoS)
Which option creates a secure connection for remote workers?
Firewall
Virus, worm, or Trojan horse
Zero-day or Zero-hour
Virtual Private Network (VPN)
Denial of Service (DoS)
Which option blocks unauthorized access to your network?
done
signal_cellular_4_bar
Firewall
Virus, worm, or Trojan horse
Zero-day or Zero-hour
Virtual Private Network (VPN)
Denial of Service (DoS)
Which option describes a network attack that occurs on the first day that a vulnerability becomes known?
Firewall
Virus, worm, or Trojan horse
Virtual Private Network (VPN)
Denial of Service (DoS)
Zero-day or Zero-hour
Which option describes malicious code running on user devices
Firewall
Virus, worm, or Trojan horse
Zero-day or Zero-hour
Virtual Private Network (VPN)
Denial of Service (DoS)
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?
DoS attack
Identity theft
Spyware
Zero-day attack
Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?
Internet
Intranet
Extranet
Extendednet
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?
Cloud computing
Online collaboration
Bring your own device
Video conferencing
What is an ISP?
It is a standards body that develops cabling and wiring standards for networking.
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 a networking device that combines the functionality of several different networking devices in one.
In which scenario would the use of a WISP be recommended?
An Internet cafe in a city
A farm in a rural area without wired broadband access
Any home with multiple wireless devices
An apartment in a building with cable access to the Internet
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
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?
Quality of service (QoS)
Scalability
Security
Fault tolerance
Integrity
What are two characteristics of a scalable network? (Choose two.)
Easily overloaded with increased traffic
Grows in size without impacting existing users
Is not as reliable as a small network
Suitable for modular devices that allow for expansion
Offers limited number of applications
Which device performs the function of determining the path that messages should take through internetworks?
A router
A firewall
A web server
A DSL modem
Which two Internet connection options do not require that physical cables be run to the building? (Choose two.)
DSL
Cellular
Satellite
Dialup
Dedicated leased line
What type of network must a home user access in order to do online shopping?
An intranet
The Internet
An extranet
A local area network
How does BYOD change the way in which businesses implement networks?
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.
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?
ACL
IPS
VPN
BYOD
What is the Internet?
It is a network based on Ethernet technology.
It provides network access for mobile devices.
It provides connections through interconnected global networks.
It is a private network for an organization with LAN and WAN connections.
What are two functions of end devices on a network? (Choose two.)
They originate the data that flows through the network.
They direct data over alternate paths in the event of link failures.
They filter the flow of data to enhance security.
They are the interface between humans and the communication network.
They provide the channel over which the network message travels.
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
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
Which access method would be the most appropriate in-band access to the IOS over a network connection?
Console
Telnet/SSH
Aux
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
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
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
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
Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.)
CTRL+Z
disable
enable
end
exit
Which statement is true about the running configuration file in a Cisco IOS device?
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 two statements are true regarding the user EXEC mode? (Choose two.)
All router commands are available.
Global configuration mode can be accessed by entering the enable command.
The device prompt for this mode ends with the '>' symbol.
Interfaces and routing protocols can be configured.
Only some aspects of the router configuration can be viewed.
Which type of access is secured on a Cisco router or switch with the enable secret command?
Virtual terminal
Privileged EXEC
AUX port
Console line
What is the default SVI on a Cisco switch?
VLAN1
VLAN99
VLAN100
VLAN999
When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.)
The hostname should be fewer than 64 characters in length
The hostname should be written in all lower case characters
The hostname should contain no spaces
The hostname should end with a special character
The hostname should begin with a letter
What is the function of the shell in an OS?
It interacts with the device hardware.
It interfaces between the users and the kernel.
It provides dedicated firewall services.
It provides the intrusion protection services for the device.
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?
Global configuration mode
Setup mode
Privileged EXEC mode
User EXEC mode
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?
Copy the running configuration to the startup configuration file.
Copy the information in the startup configuration file to the running configuration.
Reload the device and type yes when prompted to save the configuration.
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 memory location on a Cisco router or switch will lose all content when the device is restarted?
ROM
Flash
NVRAM
RAM
Why would a technician enter the command copy startup-config running-config?
To remove all configurations from the switch
To save an active configuration to NVRAM
To copy an existing configuration into RAM
To make a changed configuration the new startup configuration
Which functionality is provided by DHCP?
Automatic assignment of an IP address to each host
Remote switch management
Translation of IP addresses to domain names
End-to-end connectivity test
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
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 memory location on a Cisco router or switch stores the startup configuration file?
RAM
ROM
NVRAM
Flash
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
10.0.0.0
10.1.100.32
10.1.100.0
What is the process of converting information into the proper form for transmission?
Formatting
Encoding
Encapsulation
Which step of the communication process is concerned with properly identifying the address of the sender and receiver?
Formatting
Encoding
Encapsulation
Which three are components of message timing? (Choose three.)
Flow control
Sequence numbers
Access method
Retransmit time
Response timeout
Which delivery method is used to transmit information to one or more end devices, but not all devices on the network?
Unicast
Multicast
Broadcast
This protocol is responsible for guaranteeing the reliable delivery of information.
TCP
IP
HTTP
Ethernet
What is the purpose of the sequencing function in network communication?
To uniquely label transmitted segments of data for proper reassembly by the receiver
To determine if data is corrupted during transmission
To ensure data flows at an efficient rate between sender and receiver
To guarantee delivery of data
Which two protocols are service discovery protocols? (Choose two.)
DNS
TCP
SSH
DHCP
BGP and OSPF are examples of which type of protocol?
Network communication
Network security
Routing
Service discovery
UDP and TCP belong to which layer of the TCP/IP protocol?
Application
Transport
Internet
Network access
Which two protocols belong in the TCP/IP model application layer?
EIGRP
DNS
OSPF
ICMP
DHCP
Which protocol operates at the network access layer of the TCP/IP model?
HTTP
IP
DNS
Ethernet
Which of the following are protocols that provide feedback from the destination host to the source host regarding errors in packet delivery? (Choose two.)
IPv4
TCP
ICMPv4
IPv6
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?
HTTP at the application layer
HTML at the application layer
IP at the internet layer
UDP at the internet layer
TCP at the transport layer
Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.)
File Transfer
Address Resolution
Routing Protocols
Messaging
Internet Protocol
True or false. Standards organizations are usually vendor-neutral.
True
False
This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones.
Internet Society (ISOC)
Internet Engineering Task Force (IETF)
Internet Architecture Board (IAB)
Internet Research Task Force (IRTF)
This standards organization is responsible for IP address allocation and domain name management.
Internet Society (ISOC)
Internet Engineering Task Force (IETF)
Internet Architecture Board (IAB)
Internet Assigned Numbers Authority (IANA)
What types of standards are developed by the Electronics Industries Alliance (EIA)?
Electric wiring and connectors
Radio equipment and cell towers
Video compression and broadband communications
Voice over IP (VoIP) and satellite communications
What is the process of dividing a large data stream into smaller pieces prior to transmission?
Sequencing
Duplexing
Multiplexing
Segmentation
What is the PDU associated with the transport layer?
Segment
Packet
Bits
Frame
Which protocol stack layer encapsulates data into frames?
Data link
Transport
Network
Application
What is the name of the process of adding protocol information to data as it moves down the protocol stack?
De-encapsulation
Sequencing
Segmentation
Encapsulation
True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway.
True
False
True or false? The right-most part of an IP address is used to identify the network that a device belongs to.
True
False
What is used to determine the network portion of an IPv4 address?
Subnet mask
MAC address
Right-most part of the IP address
Left-most part of the MAC address
Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.)
Data link layer addresses are logical and network layer addresses are physical.
Network layer addresses are expressed as 12 hexadecimal digits and data link layer addresses are decimal.
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.
What is the order of the two addresses in the data link frame?
Source MAC, destination MAC
Destination MAC, source IP
Destination MAC, source MAC
Destination IP, source IP
Source IP, destination IP
True or False? Data Link addresses are physical so they never change in the data link frame from source to destination.
True
False
Which three acronyms/initialisms represent standards organizations? (Choose three.)
IANA
IEEE
IETF
OSI
TCP/IP
What type of communication will send a message to all devices on a local area network?
Broadcast
Multicast
Unicast
Allcast
In computer communication, what is the purpose of message encoding?
To convert information to the appropriate form for transmission
To interpret information
To break large messages into smaller frames
To negotiate correct timing for successful communication
Which message delivery option is used when all devices need to receive the same message simultaneously?
Duplex
Unicast
Multicast
Broadcast
What are two benefits of using a layered network model? (Choose two.)
It assists in protocol design.
It speeds up packet delivery.
It prevents designers from creating their own model.
It prevents technology in one layer from affecting other layers.
It ensures a device at one layer can function at the next higher layer.
What is the purpose of protocols in data communications?
Specifying the bandwidth of the channel or medium for each type of communication
Specifying the device operating systems that will support the communication
Providing the rules required for a specific type of communication to occur
Dictating the content of the message sent during communication
Which logical address is used for delivery of data to a remote network?
Destination MAC address
Destination IP address
Destination port number
Source MAC address
Source IP address
What is the general term that is used to describe a piece of data at any layer of a networking model?
Frame
Packet
Protocol data unit
Segment
Which two protocols function at the internet layer? (Choose two.)
POP
BOOTP
ICMP
IP
PPP
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?
Application
Presentation
Session
Transport
Network
Which type of communication will send a message to a group of host destinations simultaneously?
Broadcast
Multicast
Unicast
Anycast
What process is used to receive transmitted data and convert it into a readable message?
Access control
Decoding
Encapsulation
Flow control
What is done to an IP packet before it is transmitted over the physical medium?
It is tagged with information guaranteeing reliable delivery.
It is segmented into smaller individual pieces.
It is encapsulated into a TCP segment.
It is encapsulated in a Layer 2 frame.
What process is used to place one message inside another message for transfer from the source to the destination?
Access control
Decoding
Encapsulation
Flow control
A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?
HTTP, IP, TCP, Ethernet
HTTP, TCP, IP, Ethernet
Ethernet, TCP, IP, HTTP
Ethernet, IP, TCP, HTTP
