On a WLAN, the HSB service sets up an HSB channel between two devices that back up each other, maintains the channel status, and backs up data.
Which of the following can HSB back up in real time?

Network administrator A wants to check the neighbor status of BGP router R2. The BGP neighbor status information of R2 is as shown in the figure. Please help network administrator A obtain the following information: The AS where R2 is located is AS ()

A campus network uses OSPF for network communication. The display ospf peer command is run on a router, and the command output is as follows:
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<R2> display ospf peer
OSPF Process 1 with Router ID 10.0.2.2
Area 0.0.0.0 interface 10.0.235.2 (GigabitEthernet0/0/1)'s neighbors Router ID: 10.0.5.5 Address: 10.0.235.5 State: Full Mode: Nbr is Master Priority: 1 DR: 10.0.235.5 BDR: 10.0.235.3 MTU: 0 Dead timer due in 40 sec Area 0.0.0.0 interface 10.0.24.2 (Serial1/0/1)'s neighbors Router ID: 10.0.4.4 Address: 10.0.24.4 State: Full Mode: Nbr is Master Priority: 1 DR: None BDR: None MTU: 0 Dead timer due in 35 sec Which of the following statements are true about the device?

Which type of TLV does IS-IS use to describe IP Interface Address?

Regarding the description of configuring the security level of the security zone of the firewall, which of the following is wrong?