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A collection of practice exam questions and answers related to the ccna (cisco certified network associate) certification. It covers various networking concepts, protocols, and technologies, including network topologies, addressing schemes, routing protocols, and security principles. The questions are designed to test understanding of fundamental networking concepts and prepare individuals for the ccna exam.
Typology: Exams
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Which term refers to a network that provides secure access to the corporate office by suppliers, customers, and collaborators? - โ Extranet A small business user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used? - โ DSL An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem? Switch> config t Error - โ The administrator must first enter the privileged EXEC mode before issuing the command. Which keys act as a hot key combination that is used to interrupt IOS process? - โ Ctrl-Shift- A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode? SW1(config)# enable password letmein SW1(config)# enable secret secretin SW1(config)# line con 0 SW1(config-line)# password lineconin SW1(config-line)# login SW1(config-line)# exit SW1(config)# line vty 0 15 SW1(config-line)# password linevtyin SW1(config-line)# login SW1(config-line)# end SW1# - โ linevtyin A network administrator enters the service password-encryption command into the configuration mode of a router. What does that command accomplish? - โ This command prevents someone from viewing the running configuration passwords. What is the purpose of the SVI on a Cisco switch? -
โ The SVI provides a virtual interface for remote access to the switch. Which message delivery option is used when all devices need to receive the same message simultaneously? - โ Broadcast Which two protocols function at the internet layer? (Choose Two) - โ ICMP and IP What PDU is associated with the transport layer? - โ Segment What is done to an IP packet before it is transmitted over the physical medium? - โ It is encapsulated in a Layer 2 frame. What type of communication medium is used with a wireless LAN connection? - โ Radio Waves In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose Two) - โ Crosstalk and Electromagnetic Interference What are the two sublayers of the OSI model data link layer? (Choose Two) - โ LLC and MAC A technician has been asked to develop a physical topology for a network provides a high level of redundancy. Which physical topology requires that every node is attached to every other node on the network? - โ Mesh What type of communication rule would best describe CSMA/CD? - โ Access Method If data is being sent over a wireless network, then connects to an Ethernet network, and eventually connects to a DSL connection, which header will be replaced each time the data travels through a network infrastructure device? - โ Data Link What best described the destination IPv4 address that is used by multicasting? - โ A single IP multicast address that is used by all destinations in a group. In an Ethernet network, when a device receives a frame of 1200 bytes, what will it do? - โ Process the frame as it is. What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table? -
At a minimum, which address is required on IPv6-enabled interfaces? - โ link-local An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet? - โ All IPv6 configured routers on the local link. What is the purpose of ICMP messages? - โ To provide feedback of IP packet transmissions. Which statement describes a characteristic of the tracerout utility? - โ It identifies the routers in the path from a source host to a destination host. What is the usable number of host IP addresses on a network that has a /26 mask? - โ 62 An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22? - โ 172.16.19. Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52? - โ 2001:db8:0:f000::/ A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? - โ The data flow is being tracked based on the source port number utilized by each application. What three services are provided by the transport layer? (Choose Three) - โ Flow Control, Connection establishment, and Error Recovery An Internet television transmission is using UDP. What happens when part of the transmission is not delivered to the destination? - โ The transmission continues without the missing portion. Which two OSI model layers are considered to be included in the top layer of the TCP/IP protocol stack? (Choose Two) - โ Presentation and Session An author is uploading one chapter document from a personal computer to a file server of a book publisher. What role is the personal computer assuming in this network model? - โ Client
Which two automatic addressing assignments are supported by DHCPv4 (Choose Two)
Match the functions with the corresponding OSI layer: Session Layer? - โ Dialog Maintenance