NWC 204 Full Test Bank | Complete Solutions (Verified Answers)

NWC 204 Full Test Bank | Complete Solutions (Verified Answers) Which of the following is the name for all computers connected to a network that participate directly in network communication? A. servers B. intermediary devices C. hosts D. media When data is encoded as pulses of light, which media is being used to transmit the data? A. wireless B. Fiber-optic cable C. copper cable Which two devices are intermediary devices? (Choose two) A. hosts B. routers C. servers D. switches Which connection physically connects the end device to the network? A. Port B. NIC C. Interface Which connections are specialized ports on a networking device that connect to individual networks? A. Port B. NIC C. Interface Which type of network topology lets you see which end devices are connected to which intermediary devices and what media is being used? A. Physical topology B. Logical topology Which type of network topology lets you see the actual location of intermediary devices and cable installation? A. Physical topology B. Logical topology 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? A. Extranet B. Intranet C. LAN D. 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? A. Extranet B. Intranet C. LAN D. 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? A. Extranet B. Intranet C. LAN D. WAN When designers follow accepted standards and protocols, which of the four basic characteristics of network architecture is achieved? A. fault tolerance B. Scalability C. QoS D. Security Confidentiality, integrity, and availability are requirements of which of the four basic characteristics of network architecture? A. fault tolerance B. Scalability C. QoS D. 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? A. fault tolerance B. Scalability C. QoS D. Security Having multiple paths to a destination is known as redundancy. This is an example of which characteristic of network architecture? A. fault tolerance B. Scalability C. QoS D. Security Which feature is a good conferencing tool to use with others who are located elsewhere in your city, or even in another country? A. BYOD B. Video communications C. Cloud computing Which feature describes using personal tools to access information and communicate across a business or campus network? A. BYOD B. Video communications C. Cloud computing Which feature contains options such as Public, Private, Custom and Hybrid? A. BYOD B. Video communications C. Cloud computing Which feature is being used when connecting a device to the network using an electrical outlet? A. Smart home technology B. Powerline C. Wireless broadband Which feature uses the same cellular technology as a smart phone? A. Smart home technology B. Powerline C. Wireless broadband Which attack slows down or crashes equipment and programs? A. Firewall B. Virus, worm, or Trojan horse C. Zero-day or Zero-hour D. Virtual Private Network (VPN) E. Denial of Service (DoS) Which option creates a secure connection for remote workers? A. Firewall B. Virus, worm, or Trojan horse C. Zero-day or Zero-hour D. Virtual Private Network (VPN) E. Denial of Service (DoS) Which option blocks unauthorized access to your network? A. Firewall B. Virus, worm, or Trojan horse C. Zero-day or Zero-hour D. Virtual Private Network (VPN) E. Denial of Service (DoS) Which option describes a network attack that occurs on the first day that a vulnerability becomes known? A. Firewall B. Virus, worm, or Trojan horse C. Zero-day or Zero-hour D. Virtual Private Network (VPN) E. Denial of Service (DoS) Which option describes malicious code running on user devices? A. Firewall B. Virus, worm, or Trojan horse C. Zero-day or Zero-hour D. Virtual Private Network (VPN) E. 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? A. identity theft B. zero-day attack C. DoS attack D. spyware Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? A. intranet B. extranet C. extendednet D. Internet 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? A. online collaboration B. video conferencing C. cloud computing D. bring your own device What is an ISP? A. It is an organization that enables individuals and businesses to connect to the Internet. B. It is a networking device that combines the functionality of several different networking devices in one. C. It is a standards body that develops cabling and wiring standards for networking. D. It is a protocol that establishes how computers within a local network communicate. In which scenario would the use of a WISP be recommended? A. an apartment in a building with cable access to the Internet B. an Internet cafe in a city C. a farm in a rural area without wired broadband access D. any home with multiple wireless devices 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? A. accessibility B. scalability C. quality of service D. reliability 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? A. scalability B. fault tolerance C. security D. integrity E. quality of service (QoS) What are two characteristics of a scalable network? (Choose two.) A. offers limited number of applications B. suitable for modular devices that allow for expansion C. is not as reliable as a small network D. grows in size without impacting existing users E. easily overloaded with increased traffic Which device performs the function of determining the path that messages should take through internetworks? A. a web server B. a DSL modem C. a firewall D. a router Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) A. satellite B. DSL C. dedicated leased line D. cellular E. dialup What type of network must a home user access in order to do online shopping? A. an intranet B. an extranet C. a local area network D. the Internet How does BYOD change the way in which businesses implement networks? A. BYOD devices are more expensive than devices that are purchased by an organization. B. BYOD requires organizations to purchase laptops rather than desktops. C. BYOD provides flexibility in where and how users can access network resources. D. BYOD users are responsible for their own network security, thus reducing the need for organizational security policies. 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? A. IPS B. BYOD C. VPN D. ACL What is the Internet? A. It provides connections through interconnected global networks. B. It is a private network for an organization with LAN and WAN connections. C. It provides network access for mobile devices. D. It is a network based on Ethernet technology. What are two functions of end devices on a network? (Choose two.) A. They provide the channel over which the network message travels. B. They filter the flow of data to enhance security. C. They originate the data that flows through the network. D. They are the interface between humans and the communication network. E. They direct data over alternate paths in the event of link failures. Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured? A. Console B. Telnet/SSH C. 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? A. Console B. Telnet/SSH C. Aux Which access method would be the most appropriate in-band access to the IOS over a network connection? A. Console B. Telnet/SSH C. 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? A. Console B. Telnet/SSH C. Aux Which IOS mode allows access to all commands and features? A. global configuration mode B. interface subconfiguration mode C. line console subconfiguration mode D. privileged EXEC mode E. user EXEC mode Which IOS mode are you in if the Switch(config)# prompt is displayed? A. global configuration mode B. interface subconfiguration mode C. line console subconfiguration mode D. privileged EXEC mode E. user EXEC mode Which IOS mode are you in if the Switch> prompt is displayed? A. global configuration mode B. interface subconfiguration mode C. line console subconfiguration mode D. privileged EXEC mode E. user EXEC mode Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.) A. CTRL+Z B. disable C. enable D. end E. exit What is the command to assign the name "Sw-Floor-2" to a switch? A. hostname Sw-Floor-2 B. host name Sw-Floor-2 C. name Sw-Floor-2 How is the privileged EXEC mode access secured on a switch? A. enable class B. secret class C. enable secret class D. service password-encryption Which command enables password authentication for user EXEC mode access on a switch? A. enable secret B. login C. secret D. service password-encryption Which command encrypts all plaintext passwords access on a switch? A. enable secret B. login C. secret D. service password-encryption Which is the command to configure a banner to be displayed when connecting to a switch? A. banner $ Keep out $ B. banner motd $ Keep out $ C. display $ Keep out $ D. login banner $ Keep out $ What is the structure of an IPv4 address called? A. dotted-binary format B. dotted-decimal format C. dotted-hexadecimal format How is an IPv4 address represented? A. four binary numbers between 0 and 1 separated by colons. B. four decimal numbers between 0 and 255 separated by periods. C. thirty-two hexadecimal numbers separated by colons. D. thirty-two hexadecimal numbers separated by periods. What type of interface has no physical port associated with it? A. console B. Ethernet C. serial D. switch virtual interface (SVI) Which statement is true about the running configuration file in a Cisco IOS device? A. It should be deleted using the erase running-config command. B. It is stored in NVRAM. C. It affects the operation of the device immediately when modified. D. It is automatically saved when the router reboots. Which two statements are true regarding the user EXEC mode? (Choose two.) A. Global configuration mode can be accessed by entering the enable command. B. All router commands are available. C. Only some aspects of the router configuration can be viewed. D. The device prompt for this mode ends with the ">" symbol. E. Interfaces and routing protocols can be configured. Which type of access is secured on a Cisco router or switch with the enable secret command? A. privileged EXEC B. virtual terminal C. AUX port D. console line What is the default SVI on a Cisco switch? A. VLAN1 B. VLAN99 C. VLAN100 D. VLAN999 When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.) A. the hostname should end with a special character B. the hostname should be fewer than 64 characters in length C. the hostname should begin with a letter D. the hostname should be written in all lower case characters E. the hostname should contain no spaces What is the function of the shell in an OS? A. It interacts with the device hardware. B. It provides dedicated firewall services. C. It interfaces between the users and the kernel. D. 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? A. user EXEC mode B. global configuration mode C. setup mode D. privileged 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? A. Reload the device and type yes when prompted to save the configuration. B. Copy the running configuration to the startup configuration file. C. Copy the information in the startup configuration file to the running configuration. D. 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? A. NVRAM B. flash C. ROM D. RAM Why would a technician enter the command copy startup-config running-config? A. to remove all configurations from the switch B. to make a changed configuration the new startup configuration C. to copy an existing configuration into RAM D. to save an active configuration to NVRAM Which functionality is provided by DHCP? A. automatic assignment of an IP address to each host B. remote switch management C. end-to-end connectivity test D. translation of IP addresses to domain names Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) A. selecting the best command to accomplish a task B. displaying a list of all available commands within the current mode C. determining which option, keyword, or argument is available for the entered command D. allowing the user to complete the remainder of an abbreviated command with the TAB key E. providing an error message when a wrong command is submitted Which memory location on a Cisco router or switch stores the startup configuration file? A. NVRAM B. flash C. ROM D. RAM To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used? A. 10.0.0.0 B. 10.1.100.32 C. 10.1.0.0 D. 10.1.100.0 What is the process of converting information into the proper form for transmission? A. Formatting B. Encoding C. Encapsulation Which step of the communication process is concerned with properly identifying the address of the sender and receiver? A. Formatting B. Encoding C. Encapsulation Which three are components of message timing? (Choose three.) A. Flow control B. Sequence numbers C. Access method D. Retransmit time E. Response timeout Which delivery method is used to transmit information to one or more end devices, but not all devices on the network? A. Unicast B. Multicast C. Broadcast BGP and OSPF are examples of which type of protocol? A. network communication B. network security C. routing D. service discovery Which two protocols are service discovery protocols? (Choose two.) A. DNS B. TCP C. SSH D. DHCP What is the purpose of the sequencing function in network communication? A. to uniquely label transmitted segments of data for proper reassembly by the receiver B. to determine if data is corrupted during transmission C. to ensure data flows at an efficient rate between sender and receiver D. to guarantee delivery of data This protocol is responsible for guaranteeing the reliable delivery of information. A. TCP B. IP C. HTTP D. Ethernet UDP and TCP belong to which layer of the TCP/IP protocol? A. application B. transport C. internet D. network access Which two protocols belong in the TCP/IP model application layer? A. EIGRP B. DNS C. OSPF D. ICMP E. DHCP Which protocol operates at the network access layer of the TCP/IP model? A. HTTP B. IP C. DNS D. 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.) A. IPv4 B. TCP C. ICMPv4 D. IPv6 E. UDP F. 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? A. HTTP at the application layer B. HTML at the application layer C. IP at the internet layer D. UDP at the internet layer E. TCP at the transport layer Which services are provided by the internet layer of the TCP/IP protocol suite? (Choose three.) A. File Transfer B. Address Resolution C. Routing Protocols D. Messaging E. Ethernet F. Internet Protocol True or false. Standards organizations are usually vendor-neutral. A. True B. False This standards organization is concerned with the Request for Comments (RFC) documents that specify new protocols and update existing ones. A. Internet Society (ISOC) B. Internet Engineering Task Force (IETF) C. Internet Architecture Board (IAB) D. Internet Research Task Force (IRTF) This standards organization is responsible for IP address allocation and domain name management. A. Internet Society (ISOC) B. Internet Engineering Task Force (IETF) C. Internet Architecture Board (IAB) D. Internet Assigned Numbers Authority (IANA) What types of standards are developed by the Electronics Industries Alliance (EIA)? A. electric wiring and connectors B. radio equipment and cell towers C. video compression and broadband communications D. Voice over IP (VoIP) and satellite communications What is the process of dividing a large data stream into smaller pieces prior to transmission? A. sequencing B. duplexing C. multiplexing D. segmentation What is the PDU associated with the transport layer? A. segment B. packet C. bits D. frame Which protocol stack layer encapsulates data into frames? A. data link B. transport C. network D. application What is the name of the process of adding protocol information to data as it moves down the protocol stack? A. de-encapsulation B. sequencing C. segmentation D. encapsulation True or false? Frames exchanged between devices in different IP networks must be forwarded to a default gateway. A. True B. False True or false? The right-most part of an IP address is used to identify the network that a device belongs to. A. True B. False What is used to determine the network portion of an IPv4 address? A. subnet mask B. MAC address C. right-most part of the IP address D. left-most part of the MAC address Which of the following statements are true regarding network layer and data link layer addresses? (Choose three.) A. Data link layer addresses are logical and network layer addresses are physical. B. Network layer addresses are expressed as 12 hexadecimal digits and data link layer addresses are decimal. C. Network layer addresses are logical and data link addresses are expressed as 12 hexadecimal digits. D. Data link layer addresses are physical and network layer addresses are logical. E. Network layer addresses are either 32 or 128 bits in length. F. Data link layer addresses are 32 bits in length. What is the order of the two addresses in the data link frame? A. source MAC, destination MAC B. destination MAC, source IP C. destination IP, source IP D. destination MAC, source MAC E. 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. A. True B. False Which three acronyms/initialisms represent standards organizations? (Choose three.) A. TCP/IP B. IANA C. MAC D. IETF E. OSI F. IEEE What type of communication will send a message to all devices on a local area network? A. unicast B. multicast C. broadcast D. allcast In computer communication, what is the purpose of message encoding? A. to break large messages into smaller frames B. to convert information to the appropriate form for transmission C. to interpret information D. to negotiate correct timing for successful communication Which message delivery option is used when all devices need to receive the same message simultaneously? A. unicast B. multicast C. duplex D. broadcast What are two benefits of using a layered network model? (Choose two.) A. It prevents technology in one layer from affecting other layers. B. It speeds up packet delivery. C. It prevents designers from creating their own model. D. It assists in protocol design. E. It ensures a device at one layer can function at the next higher layer. What is the purpose of protocols in data communications? A. providing the rules required for a specific type of communication to occur B. dictating the content of the message sent during communication C. specifying the device operating systems that will support the communication D. specifying the bandwidth of the channel or medium for each type of communication Which logical address is used for delivery of data to a remote network? A. source IP address B. destination port number C. source MAC address D. destination MAC address E. destination IP address What is the general term that is used to describe a piece of data at any layer of a networking model? A. protocol data unit B. segment C. frame D. packet Which two protocols function at the internet layer? (Choose two.) A. PPP B. IP C. BOOTP D. ICMP E. POP Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices? A. network