Exam JN0-363 topic 1 question 13 discussion

A. This switch has a bridge priority of 8k. C. The root bridge is reachable using the ge-0/0/14 interface. Explanation: Option A: The exhibit indicates that the switch's bridge priority is 8k (8192). This is part of the switch's Bridge ID. Option C: The root bridge is indeed reachable via the ge-0/0/14 interface, as shown in the spanning-tree information. Why Option B is Incorrect: Since the Root ID and Bridge ID differ, this switch is not the root bridge.

In this exhibit, the bridge IDs are different. Moral of the story based on comments: pay very close attention to the bridge ID's when taking the test.

Different bridge IDs so it’s not the root bridge

There is a typo in the exhibit, the Root ID and the Bridge ID is same. Both are 8192.50:c5:8d:ae:db:41

A and C are correct. A - Bridge priority is 8k (8192) -> true B - Root ID and Bridge ID are the same -> false C - Root bridge is reachable by ge-0/0/14 interface -> true D - Bridge priority is 4k (4096) -> false

AC is the answer, root id is different from bridge id, also the priority is not 4k, 8192 is 8k

Root ID is different from Bridge ID

Switch@juniper>show spanning-tree bridge STP bridge parameters Context ID : 0 Enabled protocol : RSTP Root ID : 32768.28:c0:da:3d:50:40 <-------------------- Hello time : 2 seconds Maximum age : 20 seconds Forward delay : 15 seconds Message age : 0 Number of topology changes : 2 Time since last topology change : 3218 seconds Topology change initiator : ge-0/0/4.0 Topology change last recvd. from : 2c:6b:f5:8b:23:04 Local parameters Bridge ID : 32768.28:c0:da:3d:50:40 <-------------------- Extended system ID : 0 Internal instance ID : 0 If values of the Root ID and the Bridge ID have equal values as in the above example, then we confirm that this is the Root Bridge or the Root Switch. Root ID Bridge ID of the elected spanning-tree root bridge. The bridge ID consists of a configurable bridge priority and the MAC address of the bridge.

The bridge ID and root ID are not the same.

should be AC

this bridge is not the root bridge