1Z0-404 Free Practice Test

What does the Session Border Controller do when the Adaptive Hosted NAT (HNT) feature is enabled?

1. A. It sends a periodic re-register command to each endpoint behind a NAT.
2. B. It creates a binding for the Address of Record (AOR) of an endpoint that is behind a NAT.
3. C. It creates a binding for the Address of Record (AOR) of an endpoint that is NOT behind a NAT.
4. D. It sends SIP OPTIONS at increasing intervals to test if an endpoint behind a NAT device is still reachable.
5. E. It sends ICMP PNGsto dynamically learn the binding time of an endpoint behind a NAT device.

Correct Answer: C

You are troubleshooting a SIP routing issue and you haveaccess to the SIP call ow processed by the Session Border Controller.
Which two steps are valid for troubleshooting this type of issues? (Choose two.)

1. A. It is necessary to locate the SIP session to troubleshoot and check if there is a 404 Routes Not Found SIP error message.
2. B. It is recommended to look for 183 Session Progress SIP error messages that indicate routing issues.
3. C. It is recommended to check the called number by looking at the Request-URI of the INVITE message and making sure it is a validnumber to be routed.
4. D. It is recommended to find the CANCEL method received by the Session Border Controller which typically identifies a SIP routing issue.
5. E. It is necessary to find an initial INVITE received by the Session Border Controller which getsa 503 Service Unavailable SIP error message.

Correct Answer: BE

What is used by the standby Session Border Controller to send ARP requests via the media interface in a High Availability (HA) architecture?

1. A. the IP utility address and its virtual MAC address
2. B. the virtual IP address and its hardcoded MAC address
3. C. the IP utility address and its hardcoded MAC address
4. D. the virtual IP address and its virtual MAC address
5. E. the IP utility address andthe MAC utility address

Correct Answer: C

Which three statements are true about the bootloader? (Choose three.)

1. A. It decompresses the image file and loads it into the main RAM
2. B. It reads the imagefile
3. C. It is based on Linux
4. D. It looks at the boot parameters
5. E. It is a Windriver’s VxWork product

Correct Answer: ABD

You are configuring access rules in a Session Border Controller Peering architecture.
Which two configuration steps are required to allow access only from User Agents (UAs) in a specific IP subnet? (Choose two.)

1. A. Navigate to the sip-port configuration element and set the allow-anonymous parameter to realm-prefix.
2. B. Navigate to the session-agent configuration element and set the ip-address parameter to the IP address of your trusted User Agent (UA).
3. C. Navigate to the sip-port configuration element and set the allow-anonymous parameter to agents-only.
4. D. Navigate to the sip-port configuration element and set the allow-anonymous parameter to all.
5. E. Navigate to therealm-config configuration element and set the addr-prefix parameter to the IP subnet of your trusted User Agents (UAs).

Correct Answer: BC