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Parte 2. Implementando Ethernet LAN básicas
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Questions in this quiz (24)
1 In what modes can you type the command show mac address-table and expect to get a response with MAC table entries? (Choose two answers.)
- AUser mode
- BEnable mode
- CGlobal configuration mode
- DInterface configuration mode
2In which of the following modes of the CLI could you type the command reload and expect the switch to reboot?
- AUser mode
- BEnable mode
- CGlobal configuration mode
- DInterface configuration mode
3 Which of the following is a difference between Telnet and SSH as supported by a Cisco switch?
- ASSH encrypts the passwords used at login, but not other traffic; Telnet encrypts nothing.
- BSSH encrypts all data exchange, including login passwords; Telnet encrypts nothing.
- CTelnet is used from Microsoft operating systems, and SSH is used from UNIX and Linux operating systems.
- DTelnet encrypts only password exchanges; SSH encrypts all data exchanges.
4What type of switch memory is used to store the configuration used by the switch when it is up and working?
- ARAM
- BROM
- CFlash
- DNVRAM
- EBubble
5What command copies the configuration from RAM into NVRAM?
- Acopy running-config tftp
- Bcopy tftp running-config
- Ccopy running-config start-up-config
- Dcopy start-up-config running-config
- Ecopy startup-config running-config
- Fcopy running-config startup-config
6 A switch user is currently in console line configuration mode. Which of the following would place the user in enable mode? (Choose two answers.)
- AUsing the exit command once
- BUsing the end command once
- CPressing the Ctrl+Z key sequence once
- DUsing the quit command
7Which of the following statements describes part of the process of how a switch decides to forward a frame destined for a known unicast MAC address?
- AIt compares the unicast destination address to the bridging, or MAC address, table.
- BIt compares the unicast source address to the bridging, or MAC address, table.
- CIt forwards the frame out all interfaces in the same VLAN except for the incoming interface.
- DIt compares the destination IP address to the destination MAC address.
- EIt compares the frame’s incoming interface to the source MAC entry in the MAC address table.
8Which of the following statements describes part of the process of how a LAN switch decides to forward a frame destined for a broadcast MAC address?
- AIt compares the unicast destination address to the bridging, or MAC address, table.
- BIt compares the unicast source address to the bridging, or MAC address, table
- CIt forwards the frame out all interfaces in the same VLAN except for the incoming interface.
- DIt compares the destination IP address to the destination MAC address.
- EIt compares the frame’s incoming interface to the source MAC entry in the MAC address table.
9Which of the following statements best describes what a switch does with a frame destined for an unknown unicast address?
- AIt forwards out all interfaces in the same VLAN except for the incoming interface.
- BIt forwards the frame out the one interface identified by the matching entry in the MAC address table
- CIt compares the destination IP address to the destination MAC address.
- DIt compares the frame’s incoming interface to the source MAC entry in the MAC address table.
10Which of the following comparisons does a switch make when deciding whether a new MAC address should be added to its MAC address table?
- AIt compares the unicast destination address to the bridging, or MAC address, table.
- BIt compares the unicast source address to the bridging, or MAC address, table
- CIt compares the VLAN ID to the bridging, or MAC address, table.
- DIt compares the destination IP address’s ARP cache entry to the bridging, or MAC address, table.
11 A Cisco Catalyst switch has 24 10/100 ports, numbered 0/1 through 0/24. Ten PCs connect to the ten lowest numbered port, with those PCs working and sending data over the network. The other ports are not connected to any device. Which of the following answers lists facts displayed by the show interfaces status command?
- APort Ethernet 0/1 is in a connected state.
- BPort Fast Ethernet 0/11 is in a connected state.
- CPort Fast Ethernet 0/5 is in a connected state.
- DPort Ethernet 0/15 is in a notconnected state.
12 Consider the following output from a Cisco Catalyst switch:
Which of the following answers are true about this switch?
- AThe output proves that port Gi0/2 connects directly to a device that uses address 02BB.BBBB.BBBB.
- BThe switch has learned three MAC addresses since the switch powered on.
- CThe three listed MAC addresses were learned based on the destination MAC address of frames forwarded by the switch.
- D02CC.CCCC.CCCC was learned from the source MAC address of a frame that entered port Gi0/3.
13Imagine that you have configured the enable secret command, followed by the enable password command, from the console. You log out of the switch and log back in at the console. Which command defines the password that you had to enter to access privileged mode?
- Aenable password
- Benable secret
- CNeither
- DThe password command, if it is configured
14 An engineer wants to set up simple password protection with no usernames for some switches in a lab, for the purpose of keeping curious co-workers from logging into the lab switches from their desktop PCs. Which of the following commands would be a useful part of that configuration?
- AA login vty mode subcommand
- BA password password console subcommand
- CA login local vty subcommand
- DA transport input ssh vty subcommand
15 An engineer had formerly configured a Cisco 2960 switch to allow Telnet access so that the switch expected a password of mypassword from the Telnet user. The engineer then changed the configuration to support Secure Shell. Which of the following commands could have been part of the new configuration? (Choose two answers.)
- AA username name secret password vty mode subcommand
- BA username name secret password global configuration command
- CA login local vty mode subcommand
- DA transport input ssh global configuration command
16 An engineer’s desktop PC connects to a switch at the main site. A router at the main site connects to each branch office through a serial link, with one small router and switch at each branch. Which of the following commands must be configured on the branch office switches, in the listed configuration mode, to allow the engineer to telnet to the branch office switches? (Choose three answers.)
- AThe ip address command in interface configuration mode
- BThe ip address command in global configuration mode
- CThe ip default-gateway command in VLAN configuration mode
- DThe ip default-gateway command in global configuration mode
- EThe password command in console line configuration mode
- FThe password command in vty line configuration mode
17 Layer 2 switch configuration places all its physical ports into VLAN 2. The IP addressing plan shows that address 172.16.2.250 (with mask 255.255.255.0) is reserved for use by this new LAN switch, and that 172.16.2.254 is already configured on the router connected to that same VLAN. The switch needs to support SSH connections into the switch from any subnet in the network. Which of the following commands are part of the required configuration in this case? (Choose two answers.)
- AThe ip address 172.16.2.250 255.255.255.0 command in interface vlan 1 configuration mode.
- BThe ip address 172.16.2.250 255.255.255.0 command in interface vlan 2 configuration mode.
- CThe ip default-gateway 172.16.2.254 command in global configuration mode.
- DThe switch cannot support SSH because all its ports connect to VLAN 2, and the IP address must be configured on interface VLAN 1
18 Which of the following line subcommands tells a switch to wait until a show command’s output has completed before displaying log messages on the screen?
- Alogging synchronous
- Bno ip domain-lookup
- Cexec-timeout 0 0
- Dhistory size 15
19Which of the following describes a way to disable IEEE standard autonegotiation on a 10/100 port on a Cisco switch?
- AConfigure the negotiate disable interface subcommand
- BConfigure the no negotiate interface subcommand
- CConfigure the speed 100 interface subcommand
- DConfigure the duplex half interface subcommand
- EConfigure the duplex full interface subcommand
- FConfigure the speed 100 and duplex full interface subcommands
20 In which of the following modes of the CLI could you configure the duplex setting for interface Fast Ethernet 0/5?
- AUser mode
- BEnable mode
- CGlobal configuration mode
- DVLAN mode
- EInterface configuration mode
21 A Cisco Catalyst switch connects with its Gigabit0/1 port to an end user’s PC. The end user, thinking the user is helping, manually sets the PC’s OS to use a speed of 1000 Mbps and to use full duplex, and disables the use of autonegotiation. The switch’s G0/1 port has default settings for speed and duplex. What speed and duplex settings will the switch decide to use? (Choose two answers.)
- AFull duplex
- BHalf duplex
- C10 Mbps
- D1000 Mbps
22 Which of the following is required when configuring port security with sticky learning?
- ASetting the maximum number of allowed MAC addresses on the interface with the switchport port-security maximum interface subcommand.
- BEnabling port security with the switchport port-security interface subcommand.
- CDefining the specific allowed MAC addresses using the switchport port-security mac-address interface subcommand.
- DAll the other answers list required commands.
23 A switch’s port Gi0/1 has been correctly enabled with port security. The configuration sets the violation mode to restrict. A frame that violates the port security policy enters the interface, followed by a frame that does not. Which of the following answers correctly describe what happens in this scenario? (Choose two answers.)
- AThe switch puts the interface into an err-disabled state when the first frame arrives.
- BThe switch generates syslog messages about the violating traffic for the first frame.
- CThe switch increments the violation counter for Gi0/1 by 1.
- DThe switch discards both the first and second frame.
24 A Cisco Catalyst switch connects to what should be individual user PCs. Each port has the same port security configuration, configured as follows:
interface range gigabitethernet 0/1 - 24
switchport mode access
switchport port-security
switchport port-security mac-address sticky
Which of the following answers describe the result of the port security configuration created with these commands? (Choose two answers.)- APrevents unknown devices with unknown MAC addresses from sending data through the switch ports.
- BIf a user connects a switch to the cable, prevents multiple devices from sending data through the port.
- CWill allow any one device to connect to each port, and will save that device’s MAC address into the startup-config.
- DWill allow any one device to connect to each port, but will not save that device’s MAC address into the startup-config.
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- Quiz on Parte 2. Implementando Ethernet LAN básicas, created by Eve Ramírez on 19/05/2019.
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- Eve Ramírez
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- Español
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