CCNA3 Chapter 3 Practice Test Answers

A1 Switch A A2 A3

B1 B2 Switch B B3

C1 C2 Switch C C3

The network shown in the diagram has just been configured and none of the switches yet has any entries in its bridging table. Workstation A1 sends out a broadcast ARP request. What will happen? (Choose two)  All nine workstations will receive the ARP request.  Only Switch A will receive the ARP request.  All devices on VLAN 1 will receive the ARP request.  Workstations connected to Switch A will receive the ARP request.  Switch A will put the MAC address of workstation A1 into its bridging table.  The router will flood the ARP request to all VLANs.

Workstation A1 in the diagram sends a unicast frame to workstation C2. What must happen in order for C2 to receive the frame?  Nothing. VLAN trunking will ensure that C2 receives the frame.  C2 cannot receive the frame because it is on a different VLAN from A1.  C2 cannot receive the frame because it is attached to a different switch from A1.  The router must be configured so that it can route between the VLANs.  Switch A must be configured to route frames between the VLANs.

How many VLANs can be configured on a Catalyst switch?

99 255 1024 4096

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 1 A switch is configured with four VLANs. Which is true?  Each VLAN forms its own broadcast domain.  Each VLAN is a separate subnet and needs its own subnet address.  The Switch keeps a separate bridging table for each VLAN.  All of the above.

Which VLAN is used for STP and CDP messages?

VLAN 1 The management VLAN The native VLAN The data VLAN Any VLAN you choose

Which is true of a static VLAN?  VLAN membership depends on the MAC address of the workstation.  VLAN membership depends on the IP address of the workstation.  VLAN membership depends on the Switch port to which the workstation is connected.  It is not possible to change the VLAN membership once it has been configured.  Static VLANs require the use of special software packages such as CiscoWorks 2000.

Which is true of a dynamic VLAN?  VLAN membership depends on the MAC address of the workstation.  VLAN membership depends on the Switch port to which the workstation is connected.  It is not possible to change the VLAN membership once it has been configured.  Dynamic VLANs have become common since the introduction of DHCP.

You have configured static VLANs on a switch. The marketing department uses VLAN 4. A member of the marketing department moves to a different office, taking her PC with her. What needs to be done?  Nothing. The PC will be recognised in its new position and will stay on VLAN 4.  The cabling must be altered so that the PC is still connected to one of the Switch ports on VLAN 4.  The Switch configuration must be altered so that the port connected to the PC is reassigned to VLAN 4.  The VLAN must be changed to a dynamic VLAN.

A switch has static VLANs configured. Three workstations are connected to the same Switch port by using a hub. What is the effect of this?  The three workstations must be on the same VLAN.

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 2  The hub must be configured with the same static VLANs as the Switch.  The Switch must be configured with sub interfaces if the workstations are on different VLANs.  It is not possible for workstations to share a Switch port when VLANs are used.

The marketing department is on VLAN 4 and the sales department is on VLAN 5. How can a member of the marketing department communicate with a member of the sales department?  The Switch will detect that the destination is on a different segment and flood packets through all ports  The Switch needs to be configured to pass packets between different VLANs.  The packets must be sent via an enterprise server.  A router is needed to route packets between different VLANs.

1A new switch has the default configuration. Which of the following are true? (Choose two)  VLAN 1 exists, and all ethernet ports are assigned to it.  Each group of eight ports is assigned to a different VLAN.  An IP address is assigned to VLAN 1.  There may be default VLANs for different LAN technologies, such as token Ring and FDDI.

An administrator wants to configure an IP address on a switch so that the switch can be configured remotely. What should the administrator do?  Configure the IP address on port 0/1.  Configure the IP address on all ports.  Configure the IP address on the management VLAN.  Configure the IP address on all VLANs.  You cannot configure an IP address on a switch.

1Where is frame tagging necessary to identify VLAN membership?  Between the source workstation and the nearest switch.  Between switches if a link carries frames belonging to more than one VLAN.  Between switches if a link carries frames belonging to only one VLAN.  Between the switch and the destination workstation.

Which statements are true of IEEE 802.1Q frame tagging? (Choose two)  It is a Cisco proprietary encapsulation protocol.  It inserts a VLAN identifier and other fields into the frame header.  It encapsulates the frame with an additional header.  It is now the preferred method for identifying VLAN traffic between switches.  It used to be the most common method for identifying VLAN traffic between switches, but it is not in common use any more.

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 3 Where is frame tagging added to the frame?  At the source host workstation.  At the destination host workstation.  At a switch, before the frame is placed on a trunk connection.  At a switch, after the frame is received from a trunk connection.

Where is frame tagging removed from the frame?  At the source host workstation.  At the destination host workstation.  At a switch, before the frame is placed on a trunk connection.  At a switch, after the frame is received from a trunk connection.

Which commands would you use in order to create a VLAN number 4, called Marketing?  Switch# vlan 4 Switch(vlan)#name Marketing  Switch(config)# vlan 4 Switch(config-vlan)#name Marketing  Switch(config)#vlan access Switch(config)#vlan 4 name Marketing  Switch(vlan)#vlan 4 Switch(vlan)#name Marketing  Switch(config)#vlan 4 Marketing

Which commands would you use in order to assign the fast ethernet port 0/7 to VLAN 4? (Choose three)  Switch(vlan)# interface fastethernet 0/7  Switch(config)#interface fastethernet 0/7  Switch(config-if)#switchport mode access  Switch(vlan-if)#switchport access vlan 4  Switch(config-if)#switchport access vlan 4  Switch(config-if)#switchport vlan 4  Switch(config)#interface fastethernet 0/7 vlan 4  Switch(config-if)#switchport mode access vlan 4

Ports 0/7, 0/8 and 0/9 all belong to VLAN 4. You give the commands Switch(config)#interface fastethernet 0/9 Switch(config-if)# no switchport access vlan 4 Which of the following statements is true?  VLAN 4 has been deleted.  All three ports have been removed from VLAN 4.  Port 0/9 is now inactive and needs to be assigned to a new VLAN.  Port 0/9 is reassigned to VLAN 1.

Ports 0/7, 0/8 and 0/9 all belong to VLAN 4. You give the command Switch(config)# no vlan 4 Which of the following statements are true? (Choose 2)  VLAN 4 has been deleted.

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 4  All three ports have been assigned to VLAN 1.  VLAN 4 still exists but the ports are no longer assigned to it.  All three ports are inactive and not assigned to any VLAN.  All three ports will be reassigned to VLAN 1 when the Switch is reset.

Which command would you give to view the contents of the VLAN database?  Switch#show vlan  Switch#show vlan database  Switch#(vlan)show vlan  Switch#(vlan)show vlan database  Switch#show database vlan

If you do not specify which VLANs are allowed on a trunk link, what will happen?

 No VLANs can send traffic over the link.  Only VLAN 1 can send traffic over the link.  Only the management VLAN can send traffic over the link.  All VLANs can send traffic over the link.

Which is true about VLAN information?

 You should save the running configuration so that VLAN information is held in the startup configuration.  VLAN information is held in the VLAN database in flash memory.  You can remove VLAN information by giving the erase start command and reloading.  VLAN information is not saved, but is re-learned from neighbouring switches on start-up by using CDP.

IEEE 802.1q and ISL are:

 Different encapsulation methods for tagging frames on trunk links.  Both supported on all Cisco Catalyst switches.  Different methods of assigning devices to VLANs.  Different methods of sharing VLAN information between switches.

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 5 A switch port has been configured as follows:

SW1(config)#int fa 0/12 SW1(config-if)#mls qos trust cos SW1(config-if)#switchport voice vlan 150 SW1(config-if)#switchport mode access SW1(config-if)#switchport access vlan 5 SW1(config-if)#end

Which is true?

 There is a conflict because the port has been configured on two VLANs.  The port is on VLAN 5 only, because the later configuration replaces the earlier configuration.  The port can handle both voice and data traffic.  The port will give priority to traffic on VLAN 5.

SW 23/10/2007 D:\Docs\2017-07-17\0170cf28c1868c9d38ea51ba6da2d473.doc 6