By default, a router interface sends PIM Hello messages at an interval of __________ seconds.
Which of the following attribute must be carried in an Update message?
In VRRP networking, if VRRP is not configured to track an uplink interface and the uplink interface or link of the master device in a VRRP group fails, no switchover will be triggered. As a result, a traffic blackhole occurs.
As shown in the figure, the stateful inspection firewall forwards the packet because the packet matches the session status of the firewall.
After VRRP election is complete, a device assumes the Master or Backup role. Which of the following events can be processed only by the device of the Master role?
On a broadcast IS-IS network, a DIS needs to be elected to create and update pseudonodes. Which of the following values is the default DIS priority of an IS-IS interface?
There are two types of routing entries on a PIM network. (S, G) routing entries are used to set up on a PIM network and are applicable to both PIM-DM and PIM-SM networks.
If the interval for two consecutive packets of a TCP session reaching the firewall is longer than the aging time of the session, the firewall deletes the session information from the session table to ensure network security.
There are multiple types of Ethernet interfaces on a Layer 2 switch. An access interface can be added to only one VLAN, and a trunk interface can allow data frames from multiple VLANs to pass through.
Drag the following VRRP states to the corresponding working mechanisms.

