–Exhibit — Click the Exhibit button. You are asked to allow a customer to tunnel STP
BPDUs from Customer Switch1 to Customer Switch2 for VLAN 300 on S-VLAN v500. You
have administrative access to SW1 and SW3, but not SW2. Referring to the exhibit, which
three configuration statements must be added to SW1 to allow ingress STP BPDUs on port
ge-0/0/16 to pass to SW3 for VLAN 300 only? (Choose three.)
A.
set vlans v500 vlan-id 500 interface ge-0/0/16.0 mapping 300 swap
B.
set vlans v500 vlan-id 500 dot1q-tunneling layer2-protocol-tunneling stp
C.
set vlans v500 vlan-id 500 interface ge-0/0/16.0 mapping 300 push
D.
set ethernet-switching-options dot1q-tunneling ether-type 0x8100
E.
set vlans v500 vlan-id 500 interface ge-0/0/20.0 mapping 300 push
The correct answer should be B,D and E.
When C-VLAN-tagged frames arrive at SW1, SW1 performs a MAC-table lookup based on the
customer’s assigned VLAN (VLAN-ID 500). If SW1 has previously learned the destination MAC address of the frame, it forwards the frame to the appropriate outbound interface (ge-0/0/20.0 in this case) and adds the outer S-VLAN tag of 500 on to the frame before sending the frame to the next bridge. The act of adding an outer tag to the frame is known as a push operation
ATTENTION PLEASE!!! The JNCIP-ENT JN0-643 exam has retired, and the new exam is JNCIP-ENT JN0-647 test now!!!
New JNCIP-ENT JN0-647 Exam Questions and Answers Updated Recently (15/Nov/2017):
NEW QUESTION 20
You are asked to merge a RIP network with your OSPF network. As a first step, you establish connectivity between the RIP network and the OSPF network. The RIP network connects to an NSSA area. Which two statements are true in this scenario? (Choose two.)
A. To share RIP routes with the OSPF network, an export policy will be required on the ABR.
B. To share RIP routes with the OSPF network, an export policy will be required on the ASBR.
C. By default, external OSPF routes have a higher route preference than RIP routes.
D. Be default, RIP routes have a higher route preference than external OSPF routes.
Answer: BD
NEW QUESTION 21
Your campus EX9200 core devices are highly oversubscribed on bandwidth and reporting massive dropped packets. To immediately address the issue, you decide to implement shaping on all interfaces. Which action will accomplish?
A. Apply the input-shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.
B. Define a CoS input traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.
C. Define a CoS output traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.
D. Apply the shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.
Answer: C
NEW QUESTION 22
What allows non-Web enabled devices to access the network on a port configured for captive portal?
A. A MAC address white list can be configured on the switch to allow specific MAC addresses to bypass the captive portal process.
B. LLDP can be used to query the type of device that is attempting to access the network, and predefined device types can be allowed to bypass the captive portal process.
C. Captive portal can be configured to only prompt for credentials when HTTP or HTTPS traffic is requested on a port to allow on-HTTP enabled devices access to the network.
D. Authentication credentials for specific devices can be preconfigured on the switch for automatic authentication.
Answer: A
NEW QUESTION 23
Which two statements are true about PIM source-specific multicast (SSM)? (Choose two.)
A. The receiver DR builds a source-base tree to the RP.
B. S,G is always used.
C. A Different group address must be used by each source.
D. IGMPv3 is required.
Answer: BD
NEW QUESTION 24
Which two statements about MVRP are correct? (Choose two.)
A. MVRP monitors interfaces using VSTP and dynamically creates VLANs as necessary.
B. MVRP PDUs are sent to other switches as periodic intervals.
C. MVRP can propagate dynamic VLANs created on one switch to another switch.
D. MVRP is enabled by adding trunk ports under the [edit protocols mvrp] hierarchy.
Answer: BD
NEW QUESTION 25
Which three databases are used by the Dijkstra algorithm? (Choose three.)
A. Tree database
B. Link State database
C. Candidate database
D. MAC database
E. Configuration database
Answer: ABC
NEW QUESTION 26
A customer needs to pass Layer 2 protocols between sites. Which protocol or standard would be required to implement connectivity on EX4300, EX3400, and EX2300 devices?
A. Q-in-Q
B. IGMP
C. VPLS
D. OSPF
Answer: A
NEW QUESTION 27
Which statement is correct about MSTP?
A. MSTP enables mapping multiple independent spanning-tree instances onto one physical topology.
B. MSTP enables dynamic discovery of Layer 2 neighbors.
C. MSTP dynamically manages VLAN registration in a LAN.
D. MSTP uses stacked VLAN tags to extend a Layer 2 Ethernet connection between multiple sites.
Answer: A
NEW QUESTION 28
You configured static mode power management on an EX4300 to provide PoE power to telephone and access point equipment. Which statement is correct regarding the PoE power budget?
A. Power is budgeted to devices on a first come, first served basis as devices are connected.
B. The power budgeted will be based on the device class connected to each port.
C. Power is budgeted to a port even if no device is connected to the port.
D. The power budgeted to ports will adjust to how much power a device actually uses.
Answer: C
NEW QUESTION 29
What information must you gather from the satellite device to provision a Junos Fusion Enterprise deployment on the aggregation device? (Choose two.)
A. MAS address
B. Serial number
C. Software version
D. Model number
Answer: AB
NEW QUESTION 30
You created a firewall rule to protect the Routing Engine. After applying the rule, your OSPF adjacencies dropped. How would you solve this problem?
A. Create a firewall term that allows IP protocol 89.
B. Define a router ID under the [edit routing-options] hierarchy.
C. Configure the loopback interface under the [edit protocols ospf] hierarchy.
D. Apply the firewall filter to the physical ports.
Answer: A
NEW QUESTION 31
What are two OSPF LSA types? (Choose two.)
A. Stub
B. Router
C. Transit
D. Network
Answer: BD
NEW QUESTION 32
……
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