SRWE MODULE 3 | COMPLETE PRACTICE QUESTIONS, ANSWERS & STUDY GUIDE
2026/2027
Are VLANs based on logical or physical connections? - correct answer ✔✔Logical
What do VLANs do? - correct answer ✔✔They provide segmentation and organizational flexibility in a
switched network.
How do VLANs improve network performance? - correct answer ✔✔By Separating large broadcast
domains into smaller ones.
What happens if a device in one VLAN sends a broadcast Ethernet frame? - correct answer ✔✔All
devices in the VLAN receive the frame, but devices in other VLANs do not.
What are some benefits of a VLAN design? - correct answer ✔✔Smaller broadcast domains, Improved
Security, Improved IT efficiency, Reduced cost, Better performance, and Simpler project and application
management.
What is the default VLAN? - correct answer ✔✔The default VLAN on a Cisco switch is VLAN 1. Therefore,
all switch ports are on VLAN 1 unless it is explicitly configured to be on another VLAN. By default, all
Layer 2 control traffic is associated with VLAN 1.
What is Data VLAN? - correct answer ✔✔Carries user generated traffic
What is Native VLAN? - correct answer ✔✔A Native VLAN is an untagged vlan on a trunk. On a trunk link,
there is always one VLAN that is set as Native (default is VLAN 1).
What is a Management VLAN? - correct answer ✔✔For accessing management capabilities of a switch
What is a Voice VLAN? - correct answer ✔✔A Voice VLAN is a VLAN that segregates voice traffic from
user data traffic in the same interface. Both the data and voice VLANs must be explicitly configured.
What do VLAN trunks allow for? - correct answer ✔✔VLAN trunks allow all VLAN traffic to propagate
between switches. This enables devices connected to different switches but in the same VLAN to
communicate without going through a router.
What is a trunk? - correct answer ✔✔A trunk is a point-to-point link between two network devices that
carries more than one VLAN.
What is tagging? - correct answer ✔✔When Ethernet frames are placed on a trunk, information about
the VLANs to which they belong is added.
What are the VLAN Tag Field Details? - correct answer ✔✔Type - A 2-byte value called the tag protocol
ID (TPID) value. For Ethernet, it is set to hexadecimal 0x8100.
2026/2027
Are VLANs based on logical or physical connections? - correct answer ✔✔Logical
What do VLANs do? - correct answer ✔✔They provide segmentation and organizational flexibility in a
switched network.
How do VLANs improve network performance? - correct answer ✔✔By Separating large broadcast
domains into smaller ones.
What happens if a device in one VLAN sends a broadcast Ethernet frame? - correct answer ✔✔All
devices in the VLAN receive the frame, but devices in other VLANs do not.
What are some benefits of a VLAN design? - correct answer ✔✔Smaller broadcast domains, Improved
Security, Improved IT efficiency, Reduced cost, Better performance, and Simpler project and application
management.
What is the default VLAN? - correct answer ✔✔The default VLAN on a Cisco switch is VLAN 1. Therefore,
all switch ports are on VLAN 1 unless it is explicitly configured to be on another VLAN. By default, all
Layer 2 control traffic is associated with VLAN 1.
What is Data VLAN? - correct answer ✔✔Carries user generated traffic
What is Native VLAN? - correct answer ✔✔A Native VLAN is an untagged vlan on a trunk. On a trunk link,
there is always one VLAN that is set as Native (default is VLAN 1).
What is a Management VLAN? - correct answer ✔✔For accessing management capabilities of a switch
What is a Voice VLAN? - correct answer ✔✔A Voice VLAN is a VLAN that segregates voice traffic from
user data traffic in the same interface. Both the data and voice VLANs must be explicitly configured.
What do VLAN trunks allow for? - correct answer ✔✔VLAN trunks allow all VLAN traffic to propagate
between switches. This enables devices connected to different switches but in the same VLAN to
communicate without going through a router.
What is a trunk? - correct answer ✔✔A trunk is a point-to-point link between two network devices that
carries more than one VLAN.
What is tagging? - correct answer ✔✔When Ethernet frames are placed on a trunk, information about
the VLANs to which they belong is added.
What are the VLAN Tag Field Details? - correct answer ✔✔Type - A 2-byte value called the tag protocol
ID (TPID) value. For Ethernet, it is set to hexadecimal 0x8100.
