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CCNA 200-30|Comprehensive Q&A
For Certification Success 2026
What is the primary purpose of a VLAN? - correct-answer-To create a broadcast
domain; enable segmentation or isolation of broadcast traffic
Unassigned Cisco switch ports remain in which VLAN? - correct-answer-VLAN 1
Do VLANs prevent broadcast storms? - correct-answer-No, they minimize the size
and effect of the broadcast storm on neighbor switches and hosts
What are four advantages to using VLANs? - correct-answer-1. Enable access to
network services based on logical requirements
2. Network security is optimized with VLANs that enable managing and filtering
sensitive traffic from other network traffic
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3. Bandwidth efficiency is accomplished through segmenting traffic into smaller
broadcast domains
4. Easier add/move/delete administration of endpoints on a network and
scalability for larger enterprise deployments
What is the Layer 2 Broadcast Destination Address? - correct-answer-
FFFF.FFFF.FFFF
What is the Layer 3 Broadcast Destination Address? - correct-answer-
255.255.255.255
What is VLAN 1 used for and can it be deleted? - correct-answer-Management
Traffic; it cannot be deleted
What is the normal VLAN range? - correct-answer-VLAN 2 - 1001
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What is the extended VLAN range? - correct-answer-VLAN 1006 - 4094
What VLANs are auto-created and cannot be deleted? - correct-answer-VLAN 1,
1002 - 1005
What VLANs cannot be pruned from a trunk? - correct-answer-VLAN 1006 - 4094
How many VLANs can be assigned to a switch access port? - correct-answer-Only
one VLAN unless you are connecting an IP phone
What commands would you use to setup a switch access port with an IP phone? -
correct-answer-interface <interface#/#>
switchport mode access
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switchport access vlan #
switchport voice vlan #
Where is the switch VLAN configuration stored? - correct-answer-vlan.dat file
What commands would you use to globally create and name a VLAN? - correct-
answer-vlan #
name <name_of_vlan>
What is the default switch port mode? - correct-answer-Access port
What will switch access ports do with am Ethernet frame it receives with an
802.1q tag? - correct-answer-It will discard the packet without learning the source
MAC address
CCNA 200-30|Comprehensive Q&A
For Certification Success 2026
What is the primary purpose of a VLAN? - correct-answer-To create a broadcast
domain; enable segmentation or isolation of broadcast traffic
Unassigned Cisco switch ports remain in which VLAN? - correct-answer-VLAN 1
Do VLANs prevent broadcast storms? - correct-answer-No, they minimize the size
and effect of the broadcast storm on neighbor switches and hosts
What are four advantages to using VLANs? - correct-answer-1. Enable access to
network services based on logical requirements
2. Network security is optimized with VLANs that enable managing and filtering
sensitive traffic from other network traffic
,2|Page
3. Bandwidth efficiency is accomplished through segmenting traffic into smaller
broadcast domains
4. Easier add/move/delete administration of endpoints on a network and
scalability for larger enterprise deployments
What is the Layer 2 Broadcast Destination Address? - correct-answer-
FFFF.FFFF.FFFF
What is the Layer 3 Broadcast Destination Address? - correct-answer-
255.255.255.255
What is VLAN 1 used for and can it be deleted? - correct-answer-Management
Traffic; it cannot be deleted
What is the normal VLAN range? - correct-answer-VLAN 2 - 1001
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What is the extended VLAN range? - correct-answer-VLAN 1006 - 4094
What VLANs are auto-created and cannot be deleted? - correct-answer-VLAN 1,
1002 - 1005
What VLANs cannot be pruned from a trunk? - correct-answer-VLAN 1006 - 4094
How many VLANs can be assigned to a switch access port? - correct-answer-Only
one VLAN unless you are connecting an IP phone
What commands would you use to setup a switch access port with an IP phone? -
correct-answer-interface <interface#/#>
switchport mode access
, 4|Page
switchport access vlan #
switchport voice vlan #
Where is the switch VLAN configuration stored? - correct-answer-vlan.dat file
What commands would you use to globally create and name a VLAN? - correct-
answer-vlan #
name <name_of_vlan>
What is the default switch port mode? - correct-answer-Access port
What will switch access ports do with am Ethernet frame it receives with an
802.1q tag? - correct-answer-It will discard the packet without learning the source
MAC address
