Online Access Free 1z1-400 Practice Test

When the nat-traversal parameter is set to "always", the Session Border Controller compares the__________ and the Layer-3 source address to determine whether the endpoint is behind a NAT device and further compares the __________ to the Layer-3 source address to determine whether to add the registration to its registration cache.

• A.From address; host address of the Contact URI
• B.Sent-by of the bottom most Via header; host address of the Contact URI
• C.Host address of the Contact URI; From address
• D.SIP Proxy IP address;SIP Registrar address
• E.Sent-by of the top most Via header; host address of the Contact URI

Which SIP header does the Session Border Controller check when looking for a match to the "to-address" in the local-policy?

• A.Request-URI
• B.Route header
• C.To header
• D.Call-ID header
• E.Top most Via header

Which statement about passwords on the Net-Net 4500 is FALSE?

• A.Passwords are stored in NVRAM.
• B.Passwords cannot be seen in the output from the running configuration.
• C.You do not need User and Superuser mode passwords when accessing the ACLI using SSH.
• D.The default user mode password is "acme".
• E.The User and Superusermodes are password protected.

How many VLANs per physical interface are supported on a Session Border Controller?

• A.4095
• B.4500
• C.1024
• D.Either 3,820 or 4,500, depending on your model
• E.6000

Which two statements regarding SIP processing are TRUE?

• A.To avoid retransmissions, User Agents must forward received 100 Trying messages to their next hop.
• B.A CANCEL method can terminate a dialog.
• C.SIP sessions are terminated and re-originated as new sessions as they are routed through the Session Border Controller.
• D.An initial INVITE will contain a From header tag and a To header tag as a globally unique identifier for the dialog.
• E.The combination of the To tag, From tag, and Call-ID completely defines a peer-to-peer SIP relationship and is referred to as a dialog.