Cap 1,2,3,4 CCNA2

¿Cuál es la primera acción en la secuencia de inicio cuando se enciende un conmutador?. Cargar el software IOS de Cisco predeterminado Cargar el software del cargador de arranque. Inicialización de CPU de bajo nivel. Cargar un programa de autoprueba de encendido.

¿Qué tareas se pueden realizar utilizando la función de historial de comandos? (Escoge dos.). Ver una lista de comandos ingresados ​​en una sesión anterior. Recupere hasta 15 líneas de comando por defecto. Establezca el tamaño del búfer del historial de comandos. Recupere los comandos ingresados ​​anteriormente. Guarde las líneas de comando en un archivo de registro para referencia futura.

¿Qué debe tener un administrador para restablecer una contraseña perdida en un enrutador?. un servidor TFTP. un cable cruzado. acceso a otro enrutador. acceso físico al enrutador.

Al configurar un conmutador para el acceso SSH, ¿qué otro comando asociado con el comando de inicio de sesión local se debe ingresar en el conmutador?. nombre de usuario nombre de usuario secreto secreto. bloqueo de inicio de sesión por segundos número de intentos en segundos. enable secret password. password password.

¿Qué comando muestra información sobre la configuración de auto-MDIX para una interfaz específica?. mostrar interfaces. mostrar controladores. mostrar procesos. mostrar running-config.

If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collisions be observed?. on both ends of the connection. on the full-duplex end of the connection. only on serial interfaces. on the half-duplex end of the connection.

Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch?. config-register. boot system. boot loader. confreg.

What does a switch use to locate and load the IOS image?. BOOT environment variable. IOS image file. POST. startup-config. NVRAM.

Which protocol adds security to remote connections?. FTP. HTTP. NetBEUI. POP. SSH.

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​. The no shutdown command is required to place this interface in an UP state.​. It is a logical interface internal to the router.*. Only one loopback interface can be enabled on a router.​. It is assigned to a physical port and can be connected to other devices.

What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame?. 64 bytes. 512 bytes. 1024 bytes. 1500 bytes.

After which step of the switch bootup sequence is the boot loader executed?. after CPU initialization. after IOS localization. after flash file system initialization. after POST execution.

Which impact does adding a Layer 2 switch have on a network?. an increase in the number of dropped frames. an increase in the size of the broadcast domain*. an increase in the number of network collisions. an increase in the size of the collision domain.

Which characteristic describes cut-through switching?. Error-free fragments are forwarded, so switching occurs with lower latency. Frames are forwarded without any error checking. Only outgoing frames are checked for errors. Buffering is used to support different Ethernet speeds.

What is the significant difference between a hub and a Layer 2 LAN switch?. A hub extends a collision domain, and a switch divides collision domains.*. A hub divides collision domains, and a switch divides broadcast domains. Each port of a hub is a collision domain, and each port of a switch is a broadcast domain. A hub forwards frames, and a switch forwards only packets.

Which statement is correct about Ethernet switch frame forwarding decisions?. Frame forwarding decisions are based on MAC address and port mappings in the CAM table. Cut-through frame forwarding ensures that invalid frames are always dropped. Only frames with a broadcast destination address are forwarded out all active switch ports. Unicast frames are always forwarded regardless of the destination MAC address.

How do switch buffers affect network performance?. They provide error checking on the data received. They store frames received, thus preventing premature frame discarding when network congestion occurs. They provide extra memory for a particular port if autonegotiation of speed or duplex fails. They hold data temporarily when a collision occurs until normal data transmission resumes.

Which switch characteristic helps keep traffic local and alleviates network congestion?. high port density. fast port speed. large frame buffers. fast internal switching.

Which switch component reduces the amount of packet handling time inside the switch?. ASIC. dual processors. large buffer size store-and-forward RAM.

Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.). Occours first. occourse second.

What information is added to the switch table from incoming frames?. source MAC address and incoming port number. destination MAC address and incoming port number. source IP address and incoming port number destination IP address and incoming port number.

Which switching method ensures that the incoming frame is error-free before forwarding?. cut-through. FCS. fragment free. store-and-forward.

Refer to the exhibit. 1. 4. 8.

Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.). when connecting a Cisco switch to a non-Cisco switch*. when a neighbor switch uses a DTP mode of dynamic auto. on links that should not be trunking. on links that should dynamically attempt trunking.

Which two characteristics describe the native VLAN? (Choose two.). Designed to carry traffic that is generated by users, this type of VLAN is also known as the default VLAN. The native VLAN traffic will be untagged across the trunk link. This VLAN is necessary for remote management of a switch. The native VLAN provides a common identifier to both ends of a trunk.

On a switch that is configure0d with multiple VLANs, which command will remove only VLAN 100 from the switch?. Switch# delete flash:vlan.dat. Switch(config-if)# no switchport access vlan 100 Switch(config-if)# no switchport trunk allowed vlan 100. Switch(config)# no vlan 100*.

A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output?. There is a native VLAN mismatch between the switches. There is no media connected to the interfaces. They are administratively shut down. They are configured as trunk interfaces.

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?. All devices in all VLANs see the frame. Devices in VLAN 20 and the management VLAN see the frame. Only devices in VLAN 20 see the frame. Only devices that are connected to the local switch see the frame.

All workstations are configured correctly in VLAN 20. Workstations that are connected to switch SW1 are not able to send traffic to workstations on SW2. What could be done to remedy the problem?. Allow VLAN 20 on the trunk link. Enable DTP on both ends of the trunk. Configure all workstations on SW1 to be part of the default VLAN. Configure all workstations on SW2 to be part of the native VLAN.

What happens to switch ports after the VLAN to which they are assigned is deleted?. The ports are disabled. The ports are placed in trunk mode. The ports are assigned to VLAN1, the default VLAN. The ports stop communicating with the attached devices.

Match the IEEE 802.1Q standard VLAN tag field with the description. (Not all options are used.). type. Vlan 10. User Priority. CANONICAL FORMAL Identidifier.

In what switch mode should port G0/1 be assigned if Cisco best practices are being used?. access. trunk*. native auto.

Match the DTP mode with its function. (Not all options are used.). dynamic desirable. dynamic auto. nonegotiate. trunk.

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?. Port Fa0/11 will be shutdown. An error message would be displayed. Port Fa0/11 will be returned to VLAN 1.*.

Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface?. show mac address-table interface Fa0/1 show interfaces trunk. show vlan brief. show interfaces Fa0/1 switchport.

A technician is programming switch SW3 to manage voice and data traffic through port Fa0/20. What, if anything, is wrong with the configuration?. The mls qos trust cos command should reference VLAN 35. There is nothing wrong with the configuration. Interface Fa0/20 can only have one VLAN assigned. The command used to assign the voice VLAN to the switch port is incorrect.

Which four steps are needed to configure a voice VLAN on a switch port? (Choose four). Configure the interface as an IEEE 802.1Q trunk. Activate spanning-tree PortFast on the interface. Configure the switch port interface with subinterfaces. Assign a data VLAN to the switch port. Assign the voice VLAN to the switch port. Ensure that voice traffic is trusted and tagged with a CoS priority value. Configure the switch port in access mode. Add a voice VLAN.

PC1 is unable to communicate with server 1. The network administrator issues the show interfaces trunk command to begin troubleshooting. What conclusion can be made based on the output of this command?. VLAN 20 has not been created. The encapsulation on interface G0/1 is incorrect. The DTP mode is incorrectly set to dynamic auto on interface G0/1. Interface G0/2 is not configured as a trunk.

What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille?. The gig0/0 interface does not support inter-VLAN routing. The no shutdown command has not been configured. The IP address on CiscoVille is incorrect. The encapsulation dot1Q 20 command has not been configured.​.

A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?​. switchport mode access no switchport. switchport mode trunk. switchport mode dynamic desirable.