You save $69.98
At a research campus, a network administrator has hosts in VLAN 20 and VLAN 150 that can communicate within their own VLAN but not across the subnets. Which solution supplies controlled inter-VLAN connectivity?
Inter-VLAN traffic needs a Layer 3 forwarding function and addressed VLAN interfaces or router subinterfaces. With active gateways for 20 and 150, a host can reach the other subnet subject to policy.
Forcing trunks into access mode removes the multi-VLAN carriage needed between switches. It does not create routed interfaces for either subnet.
Deleting VLAN 150 disconnects its hosts from their intended Layer 2 segment rather than providing IP routing.
ARP broadcasts stay within their VLAN domain and cannot perform Layer 3 routing across VLAN 20 and 150.
At a customer support center, the on-call technician must attach a normal untagged workstation on GigabitEthernet1/0/8 to existing data VLAN 160. Which IOS configuration establishes the intended membership?
The port is forced into access mode and placed in VLAN 160, so its untagged endpoint frames join that single data VLAN. VLAN 160 must exist and be active on this switch.
An access switchport in Layer 2 mode is not given a routed IP address by substituting for its VLAN assignment. Gateway addressing belongs on an SVI or routed interface.
Trunk mode permits tagged VLAN traffic and is inappropriate for the stipulated simple non-tagging workstation. Native VLAN configuration does not itself make the port an access port.
This command uses VLAN 90; the endpoint must be attached to VLAN 160. A successful interface configuration in the wrong VLAN still fails segmentation requirements.
An IP phone and PC share a switch access port. Voice VLAN is configured correctly, but the uplink queue receives unmarked voice from the phone. Which operational check is most relevant?
Voice VLAN membership alone does not guarantee the traffic’s CoS or DSCP markings are trusted or preserved. Confirm what the phone sends and where classification occurs.
Changing the PC VLAN does not verify or repair the phone’s QoS marking or trust boundary.
A correctly assigned voice VLAN does not prove frames were marked or trusted for QoS. Inspect the marking/trust boundary instead.
A wireless SSID does not repair DSCP/CoS handling on the wired phone-facing switchport.
A router-on-a-stick design deliberately uses VLAN 12 as the untagged native VLAN on an 802.1Q switch trunk. VLAN 12 clients use gateway 10.12.1.1/24 on router interface GigabitEthernet0/0.12. Which router subinterface configuration matches the native-VLAN design?
The `native` keyword tells the routed subinterface to receive untagged native-VLAN 12 frames and send appropriate native traffic. The switch trunk must agree on its native VLAN ID; otherwise the tagging interpretation is inconsistent.
Tag 120 identifies a different VLAN and does not represent the native-VLAN 12 design.
Without `native`, the subinterface expects tagged VLAN 12 frames, whereas the specified switch native VLAN is transmitted untagged.
Routed router subinterfaces use 802.1Q encapsulation and IP addressing, not standard switch access-port commands.
VLAN 70 exists and interface Vlan70 is administratively up, but the SVI line protocol remains down. Which switch-side condition most directly explains this on a typical Catalyst implementation?
SVI line protocol typically tracks whether the associated VLAN has an active eligible forwarding Layer 2 member. Check VLAN membership and STP/trunk state.
Changing an interface description cannot bring an SVI line protocol down when an active eligible VLAN 70 forwarding port is present; inspect real Layer 2 state.
An interface IP’s numerical host portion is not what brings an SVI line protocol up.
Routing-table specificity does not supply an active Layer 2 membership for the local SVI.
At a school district, the site engineer is onboarding a new access switch where VLAN 15 does not yet exist; GigabitEthernet1/0/30 will serve an untagged host. What should be configured?
This creates VLAN 15 in the local VLAN database and then assigns the access interface to that VLAN. The resulting membership can be verified with show vlan brief.
Creating and assigning VLAN 10 does not put the station into VLAN 15. The VLAN name is only descriptive; its numeric ID controls membership.
Allowed VLAN lists apply to trunk links; this port is explicitly access mode and does not become a member of VLAN 15 merely through a trunk allowance.
An interface description containing 15 has no impact on actual VLAN forwarding. The access VLAN command assigns VLAN 10.
At a regional hospital, the migration lead is auditing an access port GigabitEthernet1/0/14 supposed to be in VLAN 60, not VLAN 40. Which observation directly confirms the assigned access VLAN?
For an access port, show vlan brief can verify membership of GigabitEthernet1/0/14 in VLAN 60; follow with MAC learning or traffic checks for functional forwarding.
A Layer 3 default route does not establish Layer 2 access-port placement. The local VLAN must contain the intended endpoint port.
An allowed VLAN on a trunk confirms transport eligibility, not the local access VLAN associated with GigabitEthernet1/0/14. The situation calls for evidence of the workstation port's actual membership.
The port listed under VLAN 40 is in the wrong broadcast domain. A VLAN-name description does not change its actual numeric membership.
At a school district, the on-call technician must carry VLANs 111 and 432 across one 802.1Q inter-switch connection. Which interface configuration meets this requirement?
A trunk carries tagged VLAN 111 and 432 over one interface. The allowed list names both required broadcast domains.
Access mode carries one regular untagged data VLAN rather than both required tagged VLANs. VLAN 432 would not traverse it.
Administratively shutting down the interface prevents both VLANs from traversing even with a correct allowed list.
The allowed list omits required VLAN 111. A trunk can be operational yet filter frames of a missing VLAN.
At a logistics provider, a network operations engineer sees a native VLAN mismatch alert on a trunk whose design specifies native VLAN 622 at both ends. What change resolves the mismatch without dropping tagged VLAN 36?
For a conventional 802.1Q trunk, untagged frames are assigned to the configured native VLAN. Both peers must agree on native VLAN 622 to avoid VLAN leakage and mismatch warnings.
Changing a single end does not enforce consistent native handling; the peer may classify untagged frames into a different VLAN.
Native VLAN 622 versus 331 classifies untagged frames differently at each endpoint. That is a mismatch, not a fix.
An access port is not a trunk and cannot carry the distinct required tagged VLANs.
Following a trunk cleanup, VLAN 25 users cannot reach a remote switch, while VLAN 10 works. The trunk is up. Its allowed-list now reads only 10,20. Which action best isolates the failure without resetting VLAN 10?
The operational list excludes VLAN 25. The add operation restores it without overwriting VLAN 10 and 20, then STP/VLAN presence verifies end-to-end reachability.
That would restore VLAN 25 while unnecessarily dropping the known working VLANs from the allowance.
Duplex does not explain why an otherwise healthy trunk transports other VLANs but omits one allowed VLAN.
An access-port assignment does not add VLAN 25 to an operational 802.1Q trunk allowed list.
At a hotel, the site engineer is asked to verify an inter-switch 802.1Q trunk carrying VLAN 100. Which observation most directly proves the traffic is allowed at Layer 2?
show interfaces trunk reports trunk state, encapsulation/native settings and which VLANs are actually permitted and active. That directly tests whether VLAN 100 is carried.
Local VLAN presence does not prove that the switch link negotiated 802.1Q tagging or carries VLAN 100 end-to-end.
A default route is a Layer 3 property and cannot prove the Layer 2 trunk carries VLAN 100.
Interface descriptions are administratively assigned text and do not guarantee operational 802.1Q trunking for VLAN 100.
or Guarantee your success by buying the full version which covers the full latest pool of questions. (760 Questions, Last Updated on Nov 4, 2026)
Please check your mailbox for a message from support@examlabs.com and follow the directions.
