Cisco Certified Network Associate (CCNA) Group Practice Exam

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• Which sublayer of the OSI Data Link layer identifies which network layer protocol is being used for the frame?
• What OSI physical layer term describes the physical medium which uses electrical pulses?
• Which sublayer provides a mechanism to allow multiple devices to communicate over a shared medium?
• What term describes the amount of time, including delays, for data to travel from one point to another?
• Which sequence of frame components represents the data link frame in order from start to end?
• How does a switch use the MAC address table to forward unicast frames?
• Which term describes the rate at which bits are transferred across a medium over a period of time?
• If a frame has a destination MAC address 01:00:5E:00:00:D9, how will the switch forward it?
• Which frame forwarding method receives the entire frame and performs a CRC check before forwarding the frame?
• During encapsulation at the data link layer for Ethernet, which address is added?
• Which protocol is used to transfer web pages on the World Wide Web?
• What method allows two devices to ensure that packets are not dropped because too much data is being sent too quickly?
• Which statement describes the effect of increasing distance on attenuation?
• What is a key performance benefit of cut-through switching compared with store-and-forward switching?
• Which command copies the startup configuration into the running configuration?
• What term describes a private network that spans multiple sites and uses public infrastructure to connect, accessible to partner organizations?
• Which term describes a network in which devices communicate with each other directly without a central server?
• Which device performs the function of determining the path that messages should take through internetworks?
• A frame with a broadcast destination address arriving at a switch: how is the frame forwarded?
• What is the function of the CRC value in the FCS field of a frame?
• Which action would provide the minimum security requirements for a small office network?
• What OSI physical layer term describes the physical medium for microwave transmissions?
• Which OSI layer adds the destination MAC address to a PDU during encapsulation?
• Using a console connection to a switch, which password is needed to access user EXEC mode?
• While troubleshooting, changes to the running configuration were not saved. What action will discard those changes?
• When store-and-forward switching is used, which part of the frame is used to verify errors?
• What is the purpose of the Frame Check Sequence (FCS) in Ethernet frames?
• Which two sublayers comprise the OSI data link layer?
• What is a characteristic of the LLC sublayer?
• Why would a Layer 2 switch need an IP address?
• Which command would set an encrypted enable secret password?
• Which OSI layer is involved in providing end-to-end delivery of data streams with error checking and flow control?
• Which OSI layer is primarily responsible for creating and presenting the user data payload to the lower layers?
• What OSI physical layer term describes the measure of usable data transferred over a given period of time?
• Which statement best describes CSMA/CD operation on an Ethernet network?
• Which of the following is a MAC sublayer function?
• How is SSH different from Telnet?
• In the process of sending a Telnet message from application to the network, which sequence is correct?
• At which OSI layer is a source IP address added to a PDU during encapsulation?
• Which statement about media access control is accurate?
• What does the service password-encryption command accomplish?
• Which sublayer enables IPv4 and IPv6 to utilize the same network interface and media?
• Which protocol is used to resolve hostnames to IP addresses on the Internet?
• Which switch port is used to send frames to the host with IPv4 address 10.1.1.5?
• Which mechanism allows a computer to handle a slow server by timing out waiting for a response?
• Which of the following is a multicast MAC address?
• Which term describes the ability to continue operating in the event of a component failure?
• Which OSI layer is responsible for encapsulating a PDU with port numbers for transport-layer protocols?
• What will a host do with a broadcast frame (FF:FF:FF:FF:FF:FF) addressed to it?
• Which type of network traffic requires QoS?
• Which layer in the TCP/IP model is responsible for routing messages through an internetwork?
• Which OSI layer adds the source port number to a PDU during encapsulation?
• Which prompt indicates privileged EXEC mode?
• What is the purpose of the MAC address table in a switch?
• Which action describes how a Cisco switch builds its MAC address table?
• What term describes the ability to use personal devices across a business or campus network?
• An employee at a branch office needs to access confidential pricing from Head Office. What type of network would they access?
• What does Auto-MDIX do?
• What term describes a network owned by one organization that provides secure access to individuals who work for a different organization?
• Which frame forwarding method involves waiting to receive the entire frame before forwarding and checking for errors?
• Which command prevents unencrypted passwords from displaying in plain text in a configuration file?
• Which statement best describes the MAC sublayer's role in frame forwarding?
• In IPv4 manual configuration, which property identifies the boundary between network and host portions?
• Which protocol is used to automatically assign IP addresses to hosts on a network?
• Which sublayer communicates between the networking software at the upper layers and the device hardware at the lower layers?
• Which term describes a centralized computing model where servers provide resources to clients?
• Which organization is responsible for IP address allocation, domain name management, and protocol identifiers?
• Which description matches a high bandwidth connection that runs over a telephone line?
• Which term best describes a network typically designed for a home office or small remote office?
• What is the primary purpose of Quality of Service (QoS) in a network?
• Which sublayer controls the NIC responsible for sending and receiving data on the physical medium?
• Which OSI layer adds the source MAC address to a PDU during encapsulation?
• Which network characteristic is associated with providing redundant links and devices?
• Which statement describes a function of the LLC sublayer?
• What term describes a network where one computer can be both client and server?
• Which OSI layer is responsible for preparing data for transport by segmentation and port assignment?
• Which statement about a broadcast frame on Ethernet LANs is true?
• Which term best describes link capacity to carry data on a channel?
• What term describes a computing model where server software runs on dedicated computers?
• With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
• What is being configured when a VLAN 1 interface is assigned an IP address and brought up with no shutdown?
• Which network requirement is primarily about protecting the network from unauthorized access?
• What function does pressing the Tab key have when entering a command in Cisco IOS?
• Which field is used to detect errors in a received Ethernet frame?
• In the show running-config command, the token running-config represents which part of the syntax?
• Which OSI layer provides end-to-end communication between processes using port numbers?
• Which IOS mode is entered after issuing the command 'configure terminal'?
• Which OSI layer is responsible for adding the IP header that contains the source IP address?
• Which switching method has the lowest level of latency?
• A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
• Which action occurs when a switch receives a frame addressed to a multicast MAC address?
• Which statement about the LLC sublayer is true?
• Which media-to-scenario pairing correctly matches typical enterprise networking usage?
• What term describes storing personal files on servers over the internet to provide access anywhere, anytime, and on any device?
• If the switch receives a frame and the source MAC address is not in the MAC address table, what action occurs?
• Which statement best describes twisted-pair cabling?
• Which function is a key responsibility of the data link layer in Ethernet networks?
• Which function is described as providing synchronization between source and target nodes at the MAC sublayer?
• Which MAC sublayer function is responsible for controlling the NIC that sends and receives data on the physical medium?
• Which statement correctly defines auto-MDIX capability?
• Which statement describes the role of the LLC sublayer in Ethernet?
• What is an advantage of store-and-forward switching over cut-through switching?
• Which memory buffering method would work best for switching frames from a 1000BASE-T port to a 100Base-T network?
• Which statement correctly describes a common cause of a poor Ethernet termination?
• Which protocol is primarily used to transfer files between a client and a server?
• What term describes the actual useful data rate achieved by a network application, excluding protocol overhead?
• Which statement best differentiates bandwidth from throughput?
• In a typical inter-subnet communication, what is the destination MAC address used in the Ethernet frame?
• If a host receives a frame with a destination MAC address it does not recognize, what will it do?
• What is the auto-MDIX feature on a switch?
• Which IOS mode is entered by the configure terminal command?
• What is an advantage of open standard protocols?
• Which cable type is typically used to connect a host to a switch in modern Ethernet?
• If a host receives a frame addressed to a destination MAC that the host does not recognize, what does the host do?
• Which address is used to identify devices on the same local network at the data link layer?
• Which statement is true about the CSMA/CD access method used in Ethernet?
• Which statement best describes a key advantage of fiber optic cabling for inter-building links?
• Which key completes abbreviated commands and parameters in the Cisco IOS CLI?
• Which type of communication rule best describes CSMA/CD?
• Which command enters line configuration mode for the console port?
• Which characteristic describes the latency of fast-forward switching compared to other methods?
• Which command enters global configuration mode?
• Attenuation is defined as the loss of signal strength as distance increases.
• Which sublayer enables IPv4 and IPv6 to utilize the same network interface and media?
• Which command allows a user to return to the previous level in the command hierarchy?
• What does attenuation mean in data communications?
• An extranet is best described as
• When a host receives a frame with destination MAC FF:FF:FF:FF:FF:FF, what should it do?
• Which statement best describes auto-negotiation on Ethernet links?
• Which OSI layer adds the destination port number to a PDU during encapsulation?
• Twisted-pair cabling is categorized as which two types?
• Which Cisco IOS access level can be protected with passwords to restrict access to privileged commands?
• What service translates domain names to IP addresses?
• Which OSI layer handles routing and logical addressing for packets across multiple networks?
• Which option lists the correct sequence of IOS modes from user EXEC to line configuration mode?
• Twisted cables are commonly referred to as what?
• When you run copy running-config startup-config, what is the result?
• Which statement best describes how a switch uses the MAC address table after learning?
• Which term describes a policy-based mechanism to prioritize different types of traffic on a network?
• Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem? 'invalid input detected at '^' marker.'
• If a host receives a frame with the destination MAC address FF:FF:FF:FF:FF:FF, what action does the host take?
• Which sublayer adds Layer 2 control information to network protocol data?
• Which LLC sublayer function is described as delimiting fields within a Layer 2 frame?
• What OSI physical layer term describes the physical medium that uses the propagation of light?
• Which command is used to trace the route to a destination?
• Which OSI layer is responsible for data payload being added to a PDU during encapsulation?
• Which OSI physical layer term describes the process by which one wave modifies another wave?
• What action occurs when a switch receives a frame and the source MAC address is already in the MAC address table?
• To forward a frame toward its destination on a switch, which address does the switch consult in the frame header?
• What term describes a type of network used by people who work from home or from a small remote office?
• Which transport protocol provides reliable data delivery with acknowledgments and retransmission?
• Which characteristic describes multicast messages?
• What OSI physical layer term describes the capacity at which a medium can carry data?
• In a lab setup where a PC is connected to a switch's console port and other devices connect via FastEthernet, which UTP cable types can be used to connect the devices?
• At which OSI layer would a logical address be added during encapsulation?
• When a switch receives a frame and the source MAC address is already present in the MAC address table, which action occurs?
• Which of the following is NOT an application-layer protocol in the TCP/IP protocol suite?
• Which layer provides error detection in Ethernet using CRC?
• Which interface allows remote management of a Layer 2 switch?
• Which statement describes an extended star topology?
• When a host receives a frame addressed to a MAC that is not in the host's own table, what action does the host take?
• What term describes a technology that allows devices to connect to the LAN using an electrical outlet?
• A network administrator notices throughput lower than the bandwidth when measuring backbone transfer for a mission-critical application. Which single factor most directly explains this difference?
• Which IOS command is used to enter privileged EXEC mode?
• Which PDU format is used when bits are received from the network medium by the NIC of a host?
• Which of the following is a valid criterion used to help select a network medium?
• Which statement describes a characteristic of the frame header fields of the data link layer?
• Which statement correctly matches a connectivity type to its description?
• Which medium is typically used for horizontal cabling structure?
• If a switch receives a frame with a destination MAC address of FF:FF:FF:FF:FF:FF, what action does the switch take?
• Which medium is typically used for backbone cabling in an enterprise and long-haul networks?
• Which sublayer adds a trailer to frames to detect transmission errors?
• What condition triggers a switch to learn a new MAC address on a port?
• Which statement about auto-MDIX is true?
• Which access method is used by Ethernet networks sharing a single collision domain?
• What is the purpose of the FCS field in a frame?
• Which OSI layers are encompassed by the TCP/IP model's Application layer?
• Which organization is commonly associated with North American cabling standards, alongside IEEE?
• Which statement about network protocols is correct?
• Which OSI layer is responsible for adding frame delimiters and addressing within a LAN?
• Which statement about the LLC sublayer is true?
• What is contained in the trailer of a data-link frame?
• What term describes a private collection of LANs and WANs that belongs to an organization?
• Which media communication type does not require media arbitration in the data link layer?
• Which of the following is not one of the three basic parts common to all frame types used by the data link layer?
• Which OSI layer provides framing and MAC addressing to enable local network transmission?
• Which device commonly affects wireless networks?
• Which statement describes the correct direction of encapsulation when a PC sends data to the network in TCP/IP?
• In a switch network, what happens when a new source MAC address is observed on a port?
• The cloud concept where computing resources are provided as services over the internet?
• Which mode is used to configure an IP address on VLAN 1?
• Which protocol helps prevent switching loops in Ethernet networks?
• A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that patients can see the medical records data of other patients. Which of the four network characteristics has been violated in this situation?
• Which command shows the status of switch interfaces and their configured IP addresses?
• Which statement about fiber-optic cable is true?
• What is the effect of the no shutdown command on a switch interface?
• What process involves placing one PDU inside another PDU?
• Which service is described as part of the data link layer?
• Which statement best describes the MAC sublayer in terms of physical technology integration?
• Which switching method uses the CRC value in a frame for its operation?
• When a host receives a frame addressed to its own MAC address, what is the typical action?
• What is the IP address of the switch virtual interface (SVI) on Switch0?
• If a frame arrives with a broadcast destination MAC, what is the switch's action?
• After issuing a ping, what is the purpose of pressing Ctrl-Shift-6?
• From the perspective of the client, what is the correct order of the protocol stack used to decode the received transmission?
• Which frame component carries the user payload in an Ethernet frame?
• Which item is contained in the Ethernet trailer?
• What is a primary role of the Physical layer in transmitting data on the network?
• Which statement describes a MAC sublayer capability for a shared medium?
• What is the transport-layer PDU commonly called in the TCP/IP model?
• Where is the startup configuration stored on a Cisco IOS device?
• What term describes a policy that allows network devices to manage the flow of data to give priority to voice and video?
• Which layer in the TCP/IP model is responsible for segmentation and reassembly of data for end-to-end communication?
• When a switch receives a frame with destination MAC FF:FF:FF:FF:FF:FF?
• Which prompt indicates user EXEC mode?
• When two devices using auto-negotiation are connected at different capabilities, what is the outcome?
• What is a Switch Virtual Interface (SVI) used for on a Cisco switch?
• In a Layer 2 switch bridging between a 1000BASE-T port and a 100Base-T network, which buffering approach is recommended?
• Which medium is commonly used for long-haul networks?
• Which MAC address is used for broadcast on a local network?
• Which TCP/IP layer provides end-to-end communication between processes on different hosts?
• Which statement describes powerline networking technology?
• Which statement accurately describes auto-MDIX on modern switches?