CCNAv7 Practice Questions

What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet? A. 01-00-5E B. FF-00-5E C. 01-5E-00 D. FF-FF-FF

A. 01-00-5E

To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used? A. 10.1.0.0 B. 10.0.0.0 C. 10.1.100.32 D. 10.1.100.0

A. 10.1.0.0

Which IPv4 address can a host use to ping the loopback interface? A. 127.0.0.1 B. 126.0.0.1 C. 127.0.0.0 D. 126.0.0.0

A. 127.0.0.1

What are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.) A. 64 bytes B. 1518 bytes C. 1024 bytes D. 128 bytes E. 56 bytes

A. 64 bytes B. 1518 bytes

Which data link layer media access control method does Ethernet use with legacy Ethernet hubs? A. CSMA/CD B. token passing C. determinism D. turn taking

A. CSMA/CD

Which two functions or operations are performed by the MAC sublayer? (Choose two.) A. It adds a header and trailer to form an OSI Layer 2 PDU. B. It performs the function of NIC driver software. C. It adds control information to network protocol layer data. D. It handles communication between upper and lower layers. E. It is responsible for Media Access Control.

A. It adds a header and trailer to form an OSI Layer 2 PDU. E. It is responsible for Media Access Control.

What are two benefits of using a layered network model? (Choose two.) A. It assists in protocol design. B. It speeds up packet delivery. C. It ensures a device at one layer can function at the next higher layer. D. It prevents technology in one layer from affecting other layers. E. It prevents designers from creating their own model.

A. It assists in protocol design. D. It prevents technology in one layer from affecting other layers.

Which function or operation is performed by the LLC sublayer? A. It communicates with upper protocol layers. B. It performs data encapsulation. C. It is responsible for media access control. D. It adds a header and trailer to a packet to form an OSI Layer 2 PDU.

A. It communicates with upper protocol layers.

Which statement correctly describes frame encoding? A. It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits. B. It transmits data signals along with a clock signal which occurs at evenly spaced time durations. C. It uses the characteristic of one wave to modify another wave. D. It generates the electrical, optical, or wireless signals that represent the binary numbers of the frame.

A. It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits.

What is the function of the shell in an OS? A. It interfaces between the users and the kernel. B. It provides the intrusion protection services for the device. C. It interacts with the device hardware. D. It provides dedicated firewall services.

A. It interfaces between the users and the kernel.

What are two services performed by the data link layer of the OSI model? (Choose two.) A. It provides media access control and performs error detection. B. It accepts Layer 3 packets and encapsulates them into frames. C. It determines the path to forward packets. D. It fragments data packets into the MTU size. E. It monitors the Layer 2 communication by building a MAC address table.

A. It provides media access control and performs error detection. B. It accepts Layer 3 packets and encapsulates them into frames.

What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address? A. It will discard the frame. B. It will remove the frame from the media. C. It will strip off the data-link frame to check the destination IP address. D. It will forward the frame to the next host.

A. It will discard the frame.

What attribute of a NIC would place it at the data link layer of the OSI model? A. MAC address B. attached Ethernet cable C. RJ-45 port D. IP address E. TCP/IP protocol stack

A. MAC address

Which memory location on a Cisco router or switch stores the startup configuration file? A. NVRAM B. flash C. RAM D. ROM

A. NVRAM

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. Spyware B. Identity Theft C. DoS attack D. Zero-day attack

A. Spyware

What is the default SVI on a Cisco switch? A. VLAN1 B. VLAN99 C. VLAN100 D. VLAN999

A. VLAN1

What type of address is 01-00-5E-0A-00-02? A. an address that reaches a specific group of hosts B. an address that reaches every host in the network C. an address that reaches every host inside a local subnet D. an address that reaches one specific host

A. an address that reaches a specific group of hosts

What process is used to receive transmitted data and convert it into a readable message? A. decoding B. access control C. flow control D. encapsulation

A. decoding

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized? A. physical layer B. presentation layer C. network layer D. data link layer

A. physical layer

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. frame C. segment D. packet

A. protocol data unit

What information is added during encapsulation at OSI Layer 3? A. source and destination IP address B. source and destination application protocol C. source and destination MAC D. source and destination port number

A. source and destination IP address

What are two characteristics of a scalable network? (Choose two.) A. suitable for modular devices that allow for expansion B. offers limited number of applications C. grows in size without impacting existing users D. easily overloaded with increased traffic E. is not as reliable as a small network

A. suitable for modular devices that allow for expansion C. grows in size without impacting existing users

Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table? A. switch B. hub C. modem D. router

A. switch

What is the definition of bandwidth? A. the amount of data that can flow from one place to another in a given amount of time B. the measure of usable data transferred over a given period of time C. the speed at which bits travel on the network D. the speed of bits across the media over a given period of time

A. the amount of data that can flow from one place to another in a given amount of time

When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.) A. the hostname should be fewer than 64 characters in length B. the hostname should be written in all lower case characters C. the hostname should end with a special character D. the hostname should contain no spaces E. the hostname should begin with a letter

A. the hostname should be fewer than 64 characters in length D. the hostname should contain no spaces E. the hostname should begin with a letter

What addressing information is recorded by a switch to build its MAC address table? A. the source Layer 2 address of incoming frames B. the destination Layer 3 address of incoming packets C. the destination Layer 2 address of outgoing frames D. the source Layer 3 address of outgoing packets

A. the source Layer 2 address of incoming frames

Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary? A. the use of full-duplex capable Layer 2 switches B. the development of half-duplex switch operation C. the use of Gigabit Ethernet speeds D. the virtually unlimited availability of IPv6 addresses E. the use of CSMA/CA

A. the use of full-duplex capable Layer 2 switches

Why would a technician enter the command copy startup-config running-config? A. to copy an existing configuration into RAM B. to make a changed configuration the new startup configuration C. to remove all configurations from the switch D. to save an active configuration to NVRAM

A. to copy an existing configuration into RAM

Which procedure is used to reduce the effect of crosstalk in copper cables? A. twisting opposing circuit wire pairs together B. requiring proper grounding connections C. avoiding sharp bends during installation D. wrapping the bundle of wires with metallic shielding E. designing a cable infrastructure to avoid crosstalk interference

A. twisting opposing circuit wire pairs together

How many binary bits exist within an IPv6 address? A. 256 B. 128 C. 64 D. 48 E. 32

B. 128

Which two protocols function at the internet layer? (Choose two.) A. PPP B. ICMP C. POP D. IP E. BOOTP

B. ICMP D. IP

Which standards organization oversees development of wireless LAN standards? A. IANA B. IEEE C. ISO D. TIA

B. IEEE

Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.) A. Electronic Industries Alliance (EIA) B. International Telecommunication Union (ITU) C. Internet Society (ISOC) D. Internet Assigned Numbers Authority (IANA) E. Institute of Electrical and Electronics Engineers (IEEE)

B. International Telecommunication Union (ITU) E. Institute of Electrical and Electronics Engineers (IEEE)

What is one advantage of using fiber optic cabling rather than copper cabling? A. It is usually cheaper than copper cabling. B. It is able to carry signals much farther than copper cabling. C. It is able to be installed around sharp bends. D. It is easier to terminate and install than copper cabling.

B. It is able to carry signals much farther than copper cabling.

What is an ISP? A. It is a standards body that develops cabling and wiring standards for networking. B. It is an organization that enables individuals and businesses to connect to the Internet. C. It is a networking device that combines the functionality of several different networking devices in one. D. It is a protocol that establishes how computers within a local network communicate.

B. It is an organization that enables individuals and businesses to connect to the Internet.

What are the two sublayers of the OSI model data link layer? (Choose two.) A. physical B. MAC C. network access D. transport E. internet F. LLC

B. MAC F. LLC

Which memory location on a Cisco router or switch will lose all content when the device is restarted? A. flash B. RAM C. NVRAM D. ROM

B. RAM

How does the network layer use the MTU value? A. The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it. B. The MTU is passed to the network layer by the data link layer. C. To increase speed of delivery, the network layer ignores the MTU. D. The network layer depends on the higher level layers to determine the MTU.

B. The MTU is passed to the network layer by the data link layer.

Which statement is true about MAC addresses? A. MAC addresses are implemented by software. B. The first three bytes are used by the vendor assigned OUI. C. The ISO is responsible for MAC addresses regulations. D. A NIC only needs a MAC address if connected to a WAN.

B. The first three bytes are used by the vendor assigned OUI.

What happens to runt frames received by a Cisco Ethernet switch? A. The frame is broadcast to all other devices on the same network. B. The frame is dropped. C. The frame is sent to the default gateway. D. The frame is returned to the originating network device.

B. The frame is dropped.

A computer has to send a packet to a destination host in the same LAN. How will the packet be sent? A. The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host. B. The packet will be sent directly to the destination host. C. The packet will be sent only to the default gateway. D. The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.

B. The packet will be sent directly to the destination host.

Why are two strands of fiber used for a single fiber optic connection? A. They prevent crosstalk from causing interference on the connection. B. They allow for full-duplex connectivity. C. They increase the speed at which the data can travel. D. The two strands allow the data to travel for longer distances without degrading.

B. They allow for full-duplex connectivity.

What statement describes a characteristic of MAC addresses? A. They are only routable within the private network. B. They must be globally unique. C. They are added as part of a Layer 3 PDU. D. They have a 32-bit binary value.

B. They must be globally unique.

What are two functions of end devices on a network? (Choose two.) A. They direct data over alternate paths in the event of link failures. B. They originate the data that flows through the network. C. They are the interface between humans and the communication network. D. They provide the channel over which the network message travels. E. They filter the flow of data to enhance security.

B. They originate the data that flows through the network. C. They are the interface between humans and the communication network.

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. ACL B. VPN C. BYOD D. IPS

B. VPN

In which scenario would the use of a WISP be recommended? A. any home with multiple wireless devices B. a farm in a rural area without wired broadband access C. an apartment in a building with cable access to the Internet D. an Internet cafe in a city

B. a farm in a rural area without wired broadband access

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. cloud computing B. bring your own device C. video conferencing D. online collaboration

B. bring your own device

What type of communication will send a message to all devices on a local area network? A. allcast B. broadcast C. multicast D. unicast

B. broadcast

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. integrity D. security E. quality of service (QoS)

B. fault tolerance

Which type of access is secured on a Cisco router or switch with the enable secret command? A. AUX port B. privileged EXEC C. virtual terminal D. console line

B. privileged EXEC

What is the purpose of protocols in data communications? A. specifying the device operating systems that will support the communication B. providing the rules required for a specific type of communication to occur C. specifying the bandwidth of the channel or medium for each type of communication D. dictating the content of the message sent during communication

B. providing the rules required for a specific type of communication to occur

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. reliability B. scalability C. accessibility D. quality of service

B. scalability

Which type of UTP cable is used to connect a PC to a switch port? A. crossover B. straight-through C. console D. rollover

B. straight-through

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? A. repeater B. switch C. hub D. router

B. switch

What is the purpose of the OSI physical layer? A. exchanging frames between nodes over physical network media B. transmitting bits across the local media C. performing error detection on received frames D. controlling access to media

B. transmitting bits across the local media

Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices? A.network B. transport C. presentation D. session E. application

B. transport

Which statement describes the half-duplex mode of data transmission? A. Data that is transmitted over the network flows in both directions at the same time. B. Data that is transmitted over the network can only flow in one direction. C. Data that is transmitted over the network flows in one direction at a time. D. Data that is transmitted over the network flows in one direction to many different destinations simultaneously.

C. Data that is transmitted over the network flows in one direction at a time.

What is the Internet? A. It is a private network for an organization with LAN and WAN connections. B. It provides network access for mobile devices. C. It provides connections through interconnected global networks. D. It is a network based on Ethernet technology.

C. It provides connections through interconnected global networks.

Which two characteristics describe Ethernet technology? (Choose two.) A. It is supported by IEEE 802.5 standards. B. It typically uses an average of 16 Mbps for data transfer rates. C. It uses unique MAC addresses to ensure that data is sent to the appropriate destination. D. It is supported by IEEE 802.3 standards. E. It uses a ring topology.

C. It uses unique MAC addresses to ensure that data is sent to the appropriate destination. D. It is supported by IEEE 802.3 standards.

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? AReload the device and type yes when prompted to save the configuration. B. Copy the information in the startup configuration file to the running configuration. C. 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. D. Copy the running configuration to the startup configuration file.

C. 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 characteristic describes an IPv6 enhancement over IPv4?​ A. The IPv6 address space is four times bigger than the IPv4 address space.​ B. Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy capabilities. C. The IPv6 header is simpler than the IPv4 header is, which improves packet handling. D. IPv6 addresses are based on 128-bit flat addressing as opposed to IPv4 which is based on 32-bit hierarchical addressing.

C. The IPv6 header is simpler than the IPv4 header is, which improves packet handling.

Which two statements are true regarding the user EXEC mode? (Choose two.) A. All router commands are available. B. Interfaces and routing protocols can be configured. C. The device prompt for this mode ends with the ">" symbol. D. Global configuration mode can be accessed by entering the enable command. E. Only some aspects of the router configuration can be viewed.

C. The device prompt for this mode ends with the ">" symbol. E. Only some aspects of the router configuration can be viewed.

When a connectionless protocol is in use at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary? A. Network layer IP protocols manage the communication sessions if connection-oriented transport services are not available. B. Connectionless acknowledgements are used to request retransmission. C. Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper-level protocols on the sending host. D. The best-effort delivery process guarantees that all packets that are sent are received.

C. Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper-level protocols on the sending host.

What is auto-MDIX? A. a feature to automatically determine speed and duplex B. a type of Cisco switch C. a feature that detects Ethernet cable typ​e D. an Ethernet connector type

C. a feature that detects Ethernet cable typ​e

Which message delivery option is used when all devices need to receive the same message simultaneously? A. duplex B. unicast C. broadcast D. multicast

C. broadcast

Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? A. physical B. transport C. data link D. application

C. data link

Which information is used by routers to forward a data packet toward its destination? A. source data-link address B. destination data-link address C. destination IP address D. source IP address

C. destination IP address

Which logical address is used for delivery of data to a remote network? A. destination port number B. source IP address C. destination IP address D. destination MAC address E. source MAC address

C. destination IP address

Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) A. allowing the user to complete the remainder of an abbreviated command with the TAB key B. selecting the best command to accomplish a task C. determining which option, keyword, or argument is available for the entered command D. displaying a list of all available commands within the current mode E. providing an error message when a wrong command is submitted

C. determining which option, keyword, or argument is available for the entered command D. displaying a list of all available commands within the current mode

Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) A. DSL B. dialup C. satellite D. cellular E. dedicated leased line

C. satellite D. cellular

What type of physical topology can be created by connecting all Ethernet cables to a central device? A. mesh B. ring C. star D. bus

C. star

What is indicated by the term throughput? A. the capacity of a particular medium to carry data B. the guaranteed data transfer rate offered by an ISP C. the measure of the bits transferred across the media over a given period of time D. the measure of the usable data transferred across the media E. the time it takes for a message to get from sender to receiver

C. the measure of the bits transferred across the media over a given period of time

A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. The office is located at the highest part of the national park. After network testing is complete, the technicians report that the wireless LAN signal is occasionally affected by some type of interference. What is a possible cause of the signal distortion? A. the large number of trees that surround the office B. the number of wireless devices that are used in the wireless LAN C. the microwave oven D. the elevated location where the wireless LAN was installed

C. the microwave oven

Which is a function of the Logical Link Control (LLC) sublayer? A. to define the media access processes that are performed by the hardware B. to accept segments and package them into data units that are called packets C. to identify which network layer protocol is being used D. to provide data link layer addressing

C. to identify which network layer protocol is being used

How many bits are in an IPv4 address? A. 256 B. 128 C. 64 D. 32

D. 32

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 users are responsible for their own network security, thus reducing the need for organizational security policies. C. BYOD requires organizations to purchase laptops rather than desktops. D. BYOD provides flexibility in where and how users can access network resources.

D. BYOD provides flexibility in where and how users can access network resources.

What method is used to manage contention-based access on a wireless network? A. CSMA/CD B. token passing C. priority ordering D. CSMA/CA

D. CSMA/CA

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? A. Ethernet, IP, TCP, HTTP B. Ethernet, TCP, IP, HTTP C. HTTP, IP, TCP, Ethernet D. HTTP, TCP, IP, Ethernet

D. HTTP, TCP, IP, Ethernet

Which three acronyms/initialisms represent standards organizations? (Choose three.) A. TCP/IP B. MAC C. OSI D. IANA E. IEEE F. IETF

D. IANA E. IEEE F. IETF

Which statement accurately describes a characteristic of IPv4? A. An IPv4 header has fewer fields than an IPv6 header has.​ B. All IPv4 addresses are assignable to hosts.​ C. IPv4 natively supports IPsec.​ D. IPv4 has a 32-bit address space.​

D. IPv4 has a 32-bit address space.​

Which statement is true about the running configuration file in a Cisco IOS device? A. It is stored in NVRAM. B. It should be deleted using the erase running-config command. C. It is automatically saved when the router reboots. D. It affects the operation of the device immediately when modified.

D. It affects the operation of the device immediately when modified.

What is done to an IP packet before it is transmitted over the physical medium? A. It is segmented into smaller individual pieces. B. It is encapsulated into a TCP segment. C. It is tagged with information guaranteeing reliable delivery. D. It is encapsulated in a Layer 2 frame.

D. It is encapsulated in a Layer 2 frame.

What is true concerning physical and logical topologies? A. Physical topologies display the IP addressing scheme of each network. B. Physical topologies are concerned with how a network transfers frames. C. The logical topology is always the same as the physical topology. D. Logical topologies refer to how a network transfers data between devices.

D. Logical topologies refer to how a network transfers data between devices.

What identifier is used at the data link layer to uniquely identify an Ethernet device? A. TCP port number B. sequence number C. IP address D. MAC address E. UDP port number

D. MAC address

A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended? A. The end-user device requires a dedicated connection because of performance requirements. B. The end-user device only has an Ethernet NIC. C. The end-user device area has a high concentration of RFI. D. The end-user device needs mobility when connecting to the network.

D. The end-user device needs mobility when connecting to the network.

Which device performs the function of determining the path that messages should take through internetworks? A. a firewall B. a DSL modem C. a web server D. a router

D. a router

Which functionality is provided by DHCP? A. remote switch management B. end-to-end connectivity test C. translation of IP addresses to domain names D. automatic assignment of an IP address to each host

D. automatic assignment of an IP address to each host

What is a characteristic of UTP cabling? A. woven copper braid or metallic foil B. cladding C. immunity to electrical hazards D. cancellation

D. cancellation

When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination? A. destination MAC address B. source IP address C. source MAC address D. destination IP address

D. destination IP address

What process is used to place one message inside another message for transfer from the source to the destination? A. access control B. flow control C. decoding D. encapsulation

D. encapsulation

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? A. Internet B. intranet C. extendednet D. extranet

D. extranet

Which type of communication will send a message to a group of host destinations simultaneously? A. anycast B. broadcast C. unicast D. multicast

D. multicast

Which command can be used on a Windows host to display the routing table? A. tracert B. show ip route C. netstat -s D. netstat -r

D. netstat -r

What type of cable is used to connect a workstation serial port to a Cisco router console port? A. straight-through B. crossover C. coaxial D. rollover

D. rollover

What type of network must a home user access in order to do online shopping? A. a local area network B. an extranet C. an intranet D. the Internet

D. the Internet

Which characteristic describes crosstalk? A. the weakening of the network signal over long cable lengths B. the loss of wireless signal over excessive distance from the access point C. the distortion of the network signal from fluorescent lighting D. the distortion of the transmitted messages from signals carried in adjacent wires

D. the distortion of the transmitted messages from signals carried in adjacent wires

In computer communication, what is the purpose of message encoding? A. to interpret information B. to break large messages into smaller frames C. to negotiate correct timing for successful communication D. to convert information to the appropriate form for transmission

D. to convert information to the appropriate form for transmission

What was the reason for the creation and implementation of IPv6? A. to make reading a 32-bit address easier B. to allow NAT support for private addressing C. to provide more address space in the Internet Names Registry D. to relieve IPv4 address depletion

D. to relieve IPv4 address depletion

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. privileged EXEC mode B. global configuration mode C. setup mode D. user EXEC mode

D. user EXEC mode

A technician has been asked to develop a physical topology for a network that provides a high level of redundancy. Which physical topology requires that every node is attached to every other node on the network? A. hierarchical B. bus C. star D. ring E. mesh

E. mesh