An OSPF neighbor relationship fails to be established and the display ospf error command output is as follows.

Which of the following is the probable cause?

Which of the following statements regarding QoS packet are false?

By default, the OSPF interface cost depends on the interface bandwidth and is calculated using the following formula; Bandwidth-Reference/Bandwidth. Cannot be manually modified.

The Idp session establishment process will go through the open sent status, which state will the open sent state change to after the device receives an initiation message and sends a keepalive message?

Which of the following information in a packet can be marked or re-marked?