CCNA2 v6.0 Chapter 5

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

boot system

Match the step to each switch boot sequence description. (Not all options are used.)

step 3-------CPU register initializations step 1 -------execute POST step 4 ------flash file system initilization step 2 ------load the bootloader from RAM step 5 -------load the IOS step 6------transfer switch control to the IOS

Refer to the exhibit. A network technician is troubleshooting connectivity issues in an Ethernet network with the command show interfaces fastEthernet 0/0. What conclusion can be drawn based on the partial output in the exhibit? All hosts on this network communicate in full-duplex mode. Some workstations might use an incorrect cabling type to connect to the network. There are collisions in the network that cause frames to occur that are less than 64 bytes in length. A malfunctioning NIC can cause frames to be transmitted that are longer than the allowed maximum length.

A malfunctioning NIC can cause frames to be transmitted that are longer than the allowed maximum length.

Which two statements are true regarding switch port security? (Choose two.) The three configurable violation modes all log violations via SNMP. Dynamically learned secure MAC addresses are lost when the switch reboots. The three configurable violation modes all require user intervention to re-enable ports. After entering the sticky parameter, only MAC addresses subsequently learned are converted to secure MAC addresses. If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached.

Dynamically learned secure MAC addresses are lost when the switch reboots. If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached.

Which statement describes the port speed LED on the Cisco Catalyst 2960 switch? If the LED is green, the port is operating at 100 Mb/s. If the LED is off, the port is not operating. If the LED is blinking green, the port is operating at 10 Mb/s. If the LED is amber, the port is operating at 1000 Mb/s.

If the LED is green, the port is operating at 100 Mb/s.

Which action will bring an error-disabled switch port back to an operational state? Remove and reconfigure port security on the interface. Issue the switchport mode access command on the interface. Clear the MAC address table on the switch. Issue the shutdown and then no shutdown interface commands.

Issue the shutdown and then no shutdown interface commands.

Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement? Use SSH version 1. Reconfigure the RSA key. Configure SSH on a different line. Modify the transport input command.

Modify the transport input command.

A production switch is reloaded and finishes with a Switch> prompt. What two facts can be determined? (Choose two.) POST occurred normally. The boot process was interrupted. There is not enough RAM or flash on this router. A full version of the Cisco IOS was located and loaded. The switch did not locate the Cisco IOS in flash, so it defaulted to ROM.

POST occurred normally. A full version of the Cisco IOS was located and loaded.

Refer to the exhibit. Which event will take place if there is a port security violation on switch S1 interface Fa0/1? A notification is sent. A syslog message is logged. Packets with unknown source addresses will be dropped. The interface will go into error-disabled state.

Packets with unknown source addresses will be dropped.

Which two statements are true about using full-duplex Fast Ethernet? (Choose two.) Performance is improved with bidirectional data flow. Latency is reduced because the NIC processes frames faster. Nodes operate in full-duplex with unidirectional data flow. Performance is improved because the NIC is able to detect collisions. Full-duplex Fast Ethernet offers 100 percent efficiency in both directions.

Performance is improved with bidirectional data flow. Full-duplex Fast Ethernet offers 100 percent efficiency in both directions.

Identify the steps needed to configure a switch for SSH. The answer order does not matter. (Not all options are used.)

Place the options in the following order: [+] Create a local user. [+] Generate RSA keys. [+] Configure a domain name. [+] Use the login local command. [+] Use the transport input ssh command. [+] Order does not matter within this group.

Match the link state to the interface and protocol status. (Not all options are used.)

Place the options in the following order: disable -> administratively down Layer 1 problem -> down/down - not scored - Layer 2 problem -> up/down operational -> up/up

Where are dynamically learned MAC addresses stored when sticky learning is enabled with the switchport port-security mac-address sticky command? ROM RAM NVRAM flash

RAM

Refer to the exhibit. Port Fa0/2 has already been configured appropriately. The IP phone and PC work properly. Which switch configuration would be most appropriate for port Fa0/2 if the network administrator has the following goals? No one is allowed to disconnect the IP phone or the PC and connect some other wired device. If a different device is connected, port Fa0/2 is shut down. The switch should automatically detect the MAC address of the IP phone and the PC and add those addresses to the running configuration. SWA(config-if)# switchport port-security SWA(config-if)# switchport port-security mac-address sticky SWA(config-if)# switchport port-security mac-address sticky SWA(config-if)# switchport port-security maximum 2 SWA(config-if)# switchport port-security SWA(config-if)# switchport port-security maximum 2 SWA(config-if)# switchport port-security mac-address sticky SWA(config-if)# switchport port-security SWA(config-if)# switchport port-security maximum 2 SWA(config-if)# switchport port-security mac-address sticky SWA(config-if)# switchport port-security violation restrict

SWA(config-if)# switchport port-security SWA(config-if)# switchport port-security maximum 2 SWA(config-if)# switchport port-security mac-address sticky

What is one difference between using Telnet or SSH to connect to a network device for management purposes? Telnet uses UDP as the transport protocol whereas SSH uses TCP. Telnet does not provide authentication whereas SSH provides authentication. Telnet supports a host GUI whereas SSH only supports a host CLI. Telnet sends a username and password in plain text, whereas SSH encrypts the username and password.

Telnet sends a username and password in plain text, whereas SSH encrypts the username and password.

Refer to the exhibit. What can be determined about port security from the information that is shown? The port has been shut down. The port has two attached devices. The port violation mode is the default for any port that has port security enabled. The port has the maximum number of MAC addresses that is supported by a Layer 2 switch port which is configured for port security.

The port violation mode is the default for any port that has port security enabled.

Refer to the exhibit. What media issue might exist on the link connected to Fa0/1 based on the show interface command? The bandwidth parameter on the interface might be too high. There could be an issue with a faulty NIC. There could be too much electrical interference and noise on the link. The cable attaching the host to port Fa0/1 might be too long. The interface might be configured as half-duplex.

There could be too much electrical interference and noise on the link.

Which interface is the default location that would contain the IP address used to manage a 24-port Ethernet switch? VLAN 1 Fa0/0 Fa0/1 interface connected to the default gateway VLAN 99

VLAN 1

What is the effect of using the switchport port-security command? enables port security on an interface enables port security globally on the switch automatically shuts an interface down if applied to a trunk port detects the first MAC address in a frame that comes into a port and places that MAC address in the MAC address table

enables port security on an interface

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

on the half-duplex end of the connection

A network administrator configures the port security feature on a switch. The security policy specifies that each access port should allow up to two MAC addresses. When the maximum number of MAC addresses is reached, a frame with the unknown source MAC address is dropped and a notification is sent to the syslog server. Which security violation mode should be configured for each access port? restrict protect warning shutdown

restrict

What is a function of the switch boot loader? to speed up the boot process to provide security for the vulnerable state when the switch is booting to control how much RAM is available to the switch during the boot process to provide an environment to operate in when the switch operating system cannot be found

to provide an environment to operate in when the switch operating system cannot be found

In which situation would a technician use the show interfaces switch command? to determine if remote access is enabled when packets are being dropped from a particular directly attached host when an end device can reach local devices, but not remote devices to determine the MAC address of a directly attached network device on a particular interface

when packets are being dropped from a particular directly attached host