An administrator notices that an EX4300 switch is supplying power using LLDP-MED power negotiation, but the IP phone is drawing more power than the initial hardware class allows. Where would you check the advertised LLDP-MED TLV power value received from the phone?
Which command allows you to verify the real-time PoE power consumption, allocated wattage, and operational status of all interfaces on an EX Series switch?
You are configuring a voice VLAN on an EX Series switch access port where an IP phone is connected in series with a PC. Which configuration is required on the switch interface to handle both tagged voice traffic and untagged data traffic?
An EX3400 switch experiences a total PoE power budget exhaustion after multiple high-power IP phones and security cameras are plugged in. You want to ensure that if a power deficit occurs, the switch immediately cuts power to lower-priority ports while maintaining power to executive phones on specific ports. How should you configure this?
You are configuring Power over Ethernet (PoE) on an EX4300 switch to power an IP phone requiring 15.4W (802.3af). By default, the switch allocates power based on dynamic classification. However, the IP phone frequently reboots under heavy traffic load. Which command should you configure on the switch interface to ensure the phone receives a guaranteed dedicated power budget?
You are configuring voice VLANs on an EX2300 switch. You want to ensure that untagged frames entering the interface are placed into the data VLAN, while frames generated by the attached IP phone are tagged with VLAN 50. Which CLI configuration snippet correctly achieves this?
You want to configure LLDP-MED to advertise a specific voice VLAN (VLAN ID 200) with a DSCP value of 46 to all connected IP phones across all switch ports. Which configuration hierarchy is used to define this global network policy in Junos OS?
An enterprise network uses IP phones that require LLDP-MED to receive voice VLAN information. However, security policy dictates that LLDP should be disabled on all user-facing access ports that do not have IP phones. Which configuration statement disables LLDP on a per-interface basis?
You are troubleshooting voice quality issues on an IP phone connected to an EX Series switch. You suspect that the switch is not trusting the DSCP markings (DSCP 46) sent by the IP phone. Which Junos class-of-service (CoS) configuration ensures that incoming voice traffic DSCP bits are trusted at the ingress interface?
You are configuring an EX3400 switch to support IP phones that require power redundancy. Which PoE management feature allows the switch to allocate power based on available PSU capacity while reserving a safety margin?
An IP phone connected to an EX4300 switch is assigned to voice VLAN 50 via LLDP-MED. However, when a PC is plugged into the IP phone's pass-through port, the PC cannot obtain an IP address via DHCP. The switch port is configured with interface-mode access and a native VLAN for data. What is the most likely root cause?
You are reviewing syslog messages on an EX Series switch and see frequent entries indicating PoE power budgeting warnings. You want to configure a custom trap/syslog threshold so that warnings trigger when the total power consumption exceeds 85% of the total available PoE budget. How is this configured?
An administrator is configuring LLDP-MED on an EX Series switch for a new deployment of IP phones. Which TWO configuration steps are required to properly advertise network policies to these endpoints? (Choose two.)
An administrator wants to verify LLDP and LLDP-MED operation on an EX Series switch. Which THREE operational commands provide relevant diagnostic information? (Choose three.)
An administrator notices that LLDP neighbors are failing to populate on an EX Series switch interface. Which THREE troubleshooting steps should be performed? (Choose three.)
An EX4300 switch running Junos OS supports multiple PoE power management options. Which THREE PoE management modes or settings are valid in Junos configuration? (Choose three.)
You are deploying a new IP telephony network on an EX4300 switch. The voice VLAN must be automatically communicated to connected IP phones using LLDP-MED. Which configuration parameter under system services lldp med fast-start-repeat-count must you configure to ensure rapid initial device discovery?
An EX4300 switch is experiencing a PoE budget shortage, causing newly connected IP phones to be denied power. You need to change the PoE power management mode from the default to dynamic consumption-based allocation rather than static class-based allocation. Which command achieves this?
You are troubleshooting an IP phone that is failing to learn its assigned voice VLAN via LLDP-MED from an EX4600 switch. You run show lldp interface ge-0/0/5 and verify LLDP is active. However, the phone's voice VLAN ID TLV is missing from the neighbor information. Which configuration command under the interface must be verified to ensure voice VLAN advertisements are properly transmitted?
You need to configure an LLDP-MED network policy for voice traffic on an EX switch, ensuring that the DSCP value is set to 46 and the VLAN ID is set to 150. Which configuration achieves this?
Which TWO actions occur by default on a Junos EX Series switch port when an IP phone successfully negotiates its voice VLAN using LLDP-MED? (Choose two)
You are deploying IP phones on an EX4300 switch. The phones must receive VLAN and QoS information from LLDP-MED. You have configured the voice VLAN and enabled LLDP on all interfaces. However, the phones are not receiving the network policy. Which configuration step is required?
You are deploying IP phones on an EX4300 switch. The phones must receive their voice VLAN assignment via LLDP-MED. You configure the interface with 'lldp-med' and create a network policy, but the phones do not receive the voice VLAN information. Which configuration step is missing?
You are troubleshooting an EX Series switch where an IP phone is not receiving PoE power. The switch port is configured for PoE, and the phone is known to work. Which two conditions could prevent the switch from supplying power to the phone? (Choose two.)
You are configuring a voice VLAN on an EX2300 switch. The IP phone sends untagged traffic for voice and tagged traffic for data. You want to ensure that untagged frames are placed into the voice VLAN and tagged frames into the data VLAN. Which configuration accomplishes this?
You are deploying IP phones on an EX4300 switch. Phones must receive VLAN and QoS parameters before they can pass traffic. You have configured LLDP-MED on the access ports, but the phones are not receiving the advertised network policy. You verify that the interface is up and the phone is detected as an LLDP-MED endpoint. What should you do next to ensure the network policy is delivered?
You administer an EX4300 access switch running Junos OS that supports IP phones. The phones must receive voice VLAN and QoS policy information from the switch through LLDP-MED, but a recent security audit requires that LLDP be disabled on all uplink ports toward the distribution layer while remaining active on access ports. Which configuration accomplishes this requirement?
You are configuring an EX2300 switch to support an IP phone that requires a voice VLAN. The phone will send untagged traffic for voice and tagged traffic for data. Which configuration correctly assigns untagged frames to the voice VLAN and tagged frames to the data VLAN on interface ge-0/0/1?
You are configuring LLDP-MED on an EX Series switch to support IP phones. You want to ensure that the switch advertises its capabilities and network policies to the phones. Which command correctly enables LLDP-MED on interface ge-0/0/1?
You need to verify that an EX2300 switch is correctly sending LLDP-MED network policy information to an attached IP phone so the phone places its voice traffic in the correct VLAN. Which operational command shows the LLDP-MED neighbor details, including the advertised network policy, for the interface where the phone is connected?
An administrator is configuring an EX Series switch for IP telephony. The switch must support both data and voice VLANs on a single access port. The IP phones are LLDP-MED capable and should automatically place voice traffic in VLAN 100, while data traffic remains untagged in VLAN 10. The administrator has already configured VLANs 10 and 100 and set the interface to access mode with VLAN 10. What additional configuration is required on the interface?
An EX Series switch is deployed in an office where IP phones and PCs share the same access ports. The phones must use a dedicated voice VLAN, and the attached PCs must use a separate data VLAN. LLDP-MED is used to tell the phones which VLAN to use. Which configuration on the access port accomplishes this requirement?
You are deploying IP phones that rely on LLDP-MED to receive voice VLAN and QoS parameters from an EX Series switch. Security policy requires that LLDP be disabled on uplink ports but remain active on access ports. Which TWO configuration elements are required to meet these requirements? (Choose two.)
You are troubleshooting an IP phone that is failing to discover its voice VLAN via LLDP-MED on an EX4600 switch. You issue the show lldp interface command and see that LLDP is transmitting properly, but the phone reports no voice VLAN TLV received. What is the most likely cause of this issue?
An administrator implements LLDP-MED on an EX Series switch network. To prevent unauthorized devices from masquerading as IP phones and requesting voice VLAN access, which feature should be combined with LLDP-MED?
You notice that an EX4300 switch power budget calculation is set to use 'class-based' allocation. What does this mean regarding how power is reserved for connected IP phones?
An IP phone connected to an EX4600 switch fails to power up. You run show poe interface ge-0/0/1 and find the status displays 'Hardware error'. What is the most appropriate troubleshooting step?
An administrator configures PoE management mode on an EX4300 switch to 'consumption'. An IP phone connects, but before booting up completely, the switch denies power. Upon investigation, you find that the switch's static power reservation table is maxed out. What is the reason for this behavior in consumption mode?
Which LLDP TLV (Type-Length-Value) is mandatory for LLDP-MED operation and is used to distinguish media endpoint devices from standard network switches and routers?
You are troubleshooting a power budget shortfall on an EX4300 switch where multiple PoE devices are failing to power up. Which TWO actions can you take to resolve or mitigate this power deficit? (Choose two.)
When deploying IP phones that utilize a voice VLAN on EX Series access ports, which THREE characteristics or configurations typically apply to this design? (Choose three.)
When configuring voice VLANs and PoE on an EX Series switch, which THREE benefits are achieved by implementing LLDP-MED alongside standard PoE? (Choose three.)
You are configuring an EX Series switch to support IP phones that require both data and voice VLAN segregation on a single access port. You implement an access port configured with a voice VLAN. Which underlying Junos mechanism allows the switch to process untagged data traffic into the native/access VLAN and tagged voice traffic into the voice VLAN simultaneously?
An administrator needs to configure PoE power management on an EX3400 switch to prioritize port ge-0/0/0 for a critical emergency IP phone. Which statement correctly describes the default PoE priority behavior on Junos EX switches if no explicit priority is configured?
A network administrator needs to verify the PoE status, power draw, and allocated class for all connected IP phones across all interfaces on an EX2300 switch. Which operational command should be used?
When configuring Power over Ethernet (PoE) on an EX Series switch, which THREE parameters can be explicitly managed or configured per interface? (Choose three)
Which THREE requirements must be met for an IP phone to successfully discover and use a voice VLAN configured via LLDP-MED on an EX Series switch? (Choose three)
You administer an EX4300 switch that connects to a third-party IP phone which relies on LLDP-MED to learn its voice VLAN and DSCP marking. The phone boots and registers, but call audio is marked best-effort and the phone places itself in the native data VLAN. You confirm the phone's LLDP-MED stack is enabled. On the switch interface you issued 'set protocols lldp-med interface ge-0/0/12.0' and committed, yet the phone still receives no network policy. Which configuration element must you add to deliver the voice parameters?
An administrator is troubleshooting a Juniper EX Series switch where an IP phone connected to ge-0/0/10 is not receiving PoE power. The switch is an EX4300 with PoE+ capable ports. The administrator runs 'show poe interface ge-0/0/10' and sees 'Status: Disabled'. The interface is administratively up and LLDP is operational. What is the most likely cause?
An EX4300 switch is configured with PoE management mode 'class' on all access ports. A new IP phone that advertises LLDP-MED power requirements is connected, but the phone powers on and then immediately reboots in a loop. The switch logs show the interface powering the port, then dropping power shortly after. Which action is most likely to resolve the phone boot loop?
You are configuring a voice VLAN on an EX2300 switch. The IP phones support LLDP-MED and must automatically obtain the voice VLAN ID. You want to ensure that the switch advertises the voice VLAN to the phones. Which configuration step is required on the access interface?
You are deploying IP phones on an EX4300 switch. The phones require PoE+ (802.3at) and must be allocated power based on their actual consumption rather than a fixed class. Which PoE management mode should you configure on the switch?
You are configuring an EX Series switch to support IP phones that use LLDP-MED for network policy. Which two statements are true about LLDP-MED network policy TLVs? (Choose two.)