Part 2 Review
Which 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?
It compares the unicast destination address to the bridging, or MAC address, table
It compares the unicast source address to the bridging, or MAC address, table
It forwards the frame out all interfaces in the same VLAN except for the incoming interface
It compares the destination IP address to the destination MAC address
It compares the frame's incoming interface to the source MAC entry in the MAC address table
Which 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?
It compares the unicast destination address to the bridging, or MAC address, table
It compares the unicast source address to the bridging, or MAC address, table
It forwards the frame out all interfaces in the same VLAN except for the incoming interface
It compares the frame's incoming interface to the source MAC entry in the MAC address table
Which of the following statements best describes what a switch does with a frame destined for an unknown unicast address?
It forwards out all interfaces in the same VLAN except for the incoming interface
It forwards the frame out the one interface identified by the matching entry in the MAC address table
It compares the destination IP address to the destination MAC address
It compares the frame's incoming interface to the source MAC entry in the MAC address table
Which of the following comparisons does a switch make when deciding whether a new MAC address should be added to its MAC address table?
It compares the unicast destination address to the bridging, or MAC address, table
It compares the unicast source address It compares the unicast source address to the bridging, or MAC address, table
It compares the VLAN ID to the bridging, or MAC address, table
It compares the destination IP address's ARP cache entry to the bridging, or MAC address, table
PC1, with MAC address 1111.1111.1111, is connected to Switch SW1's Fa0/1 interface PC2, with MAC address 2222.2222.2222, is connected to SW1's Fa0/2 interface. PC3 with MAC adress 3333.3333.3333, connects to SW1's Fa0/3 interface. The switch begins with no dynamically learned MAC addresses, followed by PC1 sending a frame with a destination address of 2222.2222.2222. If the next frame to reach the switch is a frame sent by PC3, destined for PC2's MAC address of 2222.2222.2222, which of the following are true? (Choose Two)
The switch forwards the frame out the interface Fa0/1
The switch fowards the frame out the interface Fa0/2
The switch forwards the frame out the interface Fa0/3
The switch discards (filters) the frame
Which of the following devices would be in the same collision domain as PC1?
PC2, which is separated from PC1 by an Ethernet hub
PC3, which is separated from PC1 by a transparent bridge
PC4, which is separated from PC1 by an Ethernet switch
PC5, which is separated from PC1 by a router
Which of the following devices would be in the same broadcast domain as PC1? (Choose Three)
PC2, which is separated from PC1 by an Ethernet hub
PC3, which is separated from PC1 by a transparent bridge
PC4, which is separated from PC1 by an Ethernet switch
PC5, which is separated from PC1 by a router
Which of the following Ethernet standards support a maximum cable length of longer than 100 meters? (Choose Two)
100BASE-T
1000BASE-LX
1000BASE-T
1000BASE-FX
A Cisco LAN switch connects to three PCs (PC1, PC2, and PC3), each directly using a cable that supports Ethernet UTP speeds up through 1000 mbps (1 Gbps). PC1 uses a NIC that supports only 10BASE-T, while PC2 has a 10/100 NIC, and PC3 has a 10/100/1000 NIC. Assuming that the PCs and the switch use IEEE autonegotiation, which PCs will use half-duplex?
PC1
PC2
PC3
None of the PCs will use half-duplex
In what modes can you execute the command (show mac-address-table)? (Choose Two)
User mode
Enable mode
Global configuration mode
Interface configuration mode
In which of the following modes of the CLI could you issue the command (reload) to reboot the switch?
User mode
Enable mode
Global configuration mode
Interface configuration mode
Which of the following is a difference between Telnet and SSH as supported by a Cisco switch?
SSH encrypts the passwords used at login, but not other traffic; Telnet encrypts nothing
SSH encrypts all data exchange, including login passwords; Telnet encrypts nothing
Telnet is used from Microsoft operating systems, and SSH is used from UNIX and Linux operating systems
Telnet encrypts only passwords exchanges; SSH encrypts all data exchanges
What type of switch memory is used to store the configuration used by the switch when it is up and working?
RAM
ROM
Flash
NVRAM
Bubble
What command copies the configuration from RAM into NVRAM?
Copy running-config tftp
Copy tftp running-config
Copy running-config start-up-conifig
Copy start-up-config running-config
Copy startup-config running config
Copy running-config startup-config
A switch user is currently in console line configuration mode. Which of the following would place the user in enable mode? (Choose Two)
Using the (exit) command once
Using the (end) command once
Pressing the Ctrl-Z key sequence once
Using the (quit) command
Imagine 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?
Enable password
Enable secret
Neither
The (password) command, if it's configured
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)
A (username) name (password) password vty mode subcommand
A (username) name (password) password global configuration command
A login local vty mode subcommand
A transport input ssh global configuration command
The following command was copied and posted into configuration mode when a user was telnetted into a Cisco switch: (banner login this is the login banner). Which of the following is true about what occurs the next time a user logs in from the console?
No banner text is displayed
The banner text "his is" is displayed
The banner text "this is the login banner" is displayed
The banner text "Login banner configured, no text defined" is displayed
Which of the following is required when configuring port security with sticky learning?
Setting the maximum number of allowed MAC addresses on the interface with the (switchport port-security maximum) interface subcommand
Enabling port security with the (switchport port-security) interface subcommand
Defining the specific allowed MAC addresses using the (switchport port-security mac-address) interface subcommand
All the other answers list required commands
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)
The (ip-address) command in interface configuration mode
The (ip-address) command in global configuration mode
The (ip default-gateway) command in VLAN configuration mode
The (ip default-gateway) command in global configuration mode
The (password) command in console line configuration mode
The (password) command in vty line configuration mode
Which of the following describes a way to disable IEEE standard autonegotiation on 10/100 port on a Cisco switch?
Configure the (negotiate disable) interface subcommand
Configure the (no negotiate) interface subcommand
Configure the (speed 100) interface subcommand
Configure the (duplex half) interface subcommand
Configure the (duplex full) interface subcommand
Configure the (speed 100) and (duplex full) interface subcommands
In which of the following modes of the CLI could you configure the duplex setting for interface Fast Ethernet 0/5?
User mode
Enable mode
Global configuration mode
VLAN mode
Interface configuration mode
In a LAN, which of the following terms best equates to the term VLAN?
Collision domain
Broadcast domain
Subnet
Single switch
Trunk
Imagine a switch with three configured VLANs. How many subnets are required assuming that all hosts in all VLANs want to use TCP/IP
0
1
2
3
You can't tell from the information provided
Switch SW1 sends a frame to switch SW2 using 802.1Q trunking. Which of the answers describes how SW1 changes or adds to the Ethernet frame before forwarding the frame to SW2?
Inserts a 4-byte header and does change the MAC addresses
Inserts a 4-byte header and does not change the MAC addresses
Encapsulates the original frame behind an entirely-new Ethernet header
None of the other answers are correct
For an 802.1Q trunk between two Ethernet switches, which answer most accurately defines which frames do not include an 802.1Q header?
Frames in the native VLAN (only one)
Frames in extended VLANs
Frames in VLAN 1 (not configurable)
Frames in all native VLANs (multiple allowed)
Imagine that you are told that switch 1 is configured with the dynamic auto parameter for trunking on its Fa0/5 interface, which is connected to switch 2. You have to configure switch 2. Which of the following settings for trunking could allow trunking to work? (Choose Two)
Trunking turned on
Dynamic auto
Dynamic desirable
Access
None of the other answers are correct
A switch has just arrived from Cisco. The switch has never been configured with any VLANs, but VTP has been disabled. An engineer gets into configuration mode and issues the vlan 22 command, followed by the name Hannahs-VLAN command. Which of the following are true? (Choose Two)
VLAN 22 is listed in the output of the (show vlan brief) command
VLAN 22 is listed in the output of the (show running-config) command
VLAN 22 is not created by this process
VLAN 22 does not exist in that switch until at least one interface is assigned to that VLAN
Which of the following commands identify switch interfaces as being trunking interfaces: interfaces that currently operate as VLAN trunks? (Choose Two)
Show interfaces
Show interfaces switchport
Show interfaces trunk
Show trunks
Imagine that a switch connects through an Ethernet cable to a router, and the router's host name is Hannah. Which of the following commands could tell you information about the IOS version on Hannah without establishing a Telnet connection to Hannah? (Choose Two)
Show neighbors Hannag
Show cdp
Show cdp neighbors
Show cdp neighbors Hannah
Show cdp entry Hannah
Show cdp neighbors detail
A switch is cabled to a router whose host name is Hannah. Which of the following CDP commands could identify Hannah's model of hardware? (Choose Two)
Show neighbors
Show neighbors Hannah
Show cdp
Show cdp interface
Show cdp neighbors
Show cdp entry Hannah
The output of the (show interfaces status) command on a 2960 switch shows interface Fa0/1 in a "disabled" state. Which of the following is true about interface Fa0/1? (Choose Three)
The interface is configured with the (shutdown) command
The (show interfaces fa0/1) command will list the interface with two status codes of administratively down and line protocol down
The (show interfaces fa0/1) command will list the interface with two status codes of up and down
The interface cannot currently be used to forward frames
The interface can currently be used to forward frames
Switch SW1 uses its Gigabit 0/1 interface to connect to switch SW2's Gigabit 0/2 interface. SW2's Gi0/2 interface is configured with the speed 1000 and duplex full commands. SW1 uses all the defaults for interface configuration commands on its Gi0/1 interface. Which of the following are true about the link it comes up? (Choose Two)
The link works at 1000 Mbps (1 Gbps)
SW1 attempts to run at 10 Mbps because SW2 has effectively disabled IEEE standard autonegotiation
The link runs at 1 Gbps, but SW1 uses half-duplex and SW2 uses full-duplex
Both switches use full-duplex
The following line of output was taken from a (show interfaces fa0/1) command: (Full-duplex, 100Mbps, media type is 10/100BaseTX). Which of the following are true about the interface? (Choose Two)
The speed was definitely configured with the speed 100 interface subcommand
The speed might have been configured with the speed 100 interface subcommand
The duplex was definitely configured with the duplex full interface subcommand
The duplex might have been configured with the duplex full interface subcommand
Which of the following commands list MAC address table entries for MAC addresses configured by port security? (Choose Two)
Show mac address-table dynamic
Show mac address-table
Show mac address-table static
Show mac address-table port-security
On a Cisco Catalyst switch, you issue a (show mac address-table) command. Which of the following answers list information you would likely see in most lines of output? (Choose Two)
A MAC address
An IP address
A VLAN ID
Type (broadcast, multicast, or unicast)
Layer 2 switches SW1 and SW2 connect through a link, with port G0/2 on SW2. The network engineer wants to use 802.1Q trunking on this link. The (show interfaces g0/1 switchport) command on SW1 shows the output listed here: Which of the following must be true on switch SW2's G0/2 port?
The operational state per the (show interfaces switchport) command must be "trunk"
The administrative state per (show interfaces switchport) command must be "trunk"
SW2 must use the (switchport mode trunk) configuration command on G0/2, or the link will not use trunking
SW2 can use the (switchport mode dynamic auto) configuration command as one option to make the link use trunking
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