H11-861 무료 덤프문제 온라인 액세스

During communication, both endpoints may occupy an event or resource that cannot be shared. To avoid this situation, a master endpoint needs to be determined. When conflicts occur, the standby endpoint should follow the master endpoint. ( )

• A.FALSE
• B.TRUE

The SIP works on the basis of messages which are the base units for the interaction between the SIP client and server().

• A.FALSE
• B.TRUE

The upgrade software format of the HD video terminal is ( ).

• A..tp4
• B..tkn
• C..dat
• D..txt

Private and public network terminals are registered with a GK. A private network terminal has NAT disabled.
If a public network terminal fails to call this private network terminal, what is the root cause?( )

• A.The destination address of a SETUP message is a private network address, because the address of the CS is specified in the RRQ message from a private network terminal and does not change after NAT.
• B.The public network terminal fails to obtain the RRQ information of the private network terminal.
• C.The public network terminal fails to locate the source port of the private network terminal.
• D.The callee CS address in the ACF message sent by the GK is incorrect.

NAT works at the ( ).

• A.Data link layer
• B.Transport layer
• C.Network layer
• D.Application layer