1Z0-400 - Oracle Communications Session Border Controller Implementation Essentials
Go back to Oracle
You configured local policy preferences on the Net-Net 4500.The Net-Net 4500 sorts through these preferences. Which preference is ranked the second highest priority?
What two options are available to enable access control in a SIP configuration and how would they be configured?
Configure the al low-anonymous parameter under the sip-port to agents-only, then configure your SIP peers as session agents.
Configure the access-control parameter to realm-prefix.
Session Initiation Protocol (SIP) is an Application layer control protocol that performs which two functions?
Establish, modify and terminate multimedia sessions.
Provide network transport services for real-time applications such as voice and video.
Upon issuing the done command, you get an Error 409. What does this error indicate?
You are trying to create an element with a unique identifier that already exists.
You must decide whether to deploy the policy based realm bridging with header manipulation rules (PBRB-HMR) model in your SIP peering environment. What are two deciding factors that tip your decision for or against HMR in contrast to a SIP- NAT Bridge (SNB) architecture?
PBRB-HMR is much easier to configure, even though it has similar performance to the SNB model.
PBRB-HMR provides better topology hiding, at the expense of performance.
Which two parameters MUST be specified when configuring a local policy for SIP Peering?
Which header fields will a User Agent Client (UAC) use to communicate the SIP extensions, or options, it expects the corresponding User Agent Server (UAS) to support?
Which two base capabilities best describe the Session Border Controller High Availability (HA) architecture?
The Session Border Controller provides full HA capabilities without any special changes, just a simple configuration command.
The Session Border Controller can only be configured to synchronize configuration state.
How does the Session Border Controller ensure that a pinhole is kept open for persistent communication to a SIP endpoint behind a NAT device?
By sending ARP requests at a defined frequency
Which statements are TRUE about a Net-Net 4500 SIP interface?
The SIP interface listens for SIP signaling on one or more configured IP address/port/transport combinations.
Which two are TRUE regarding the Net-Net 3820 and Net-Net 4500 Fan Module component?
You mape a configuration change to a media interface. Which command must be executed in order to commit the changes to volatile memory?
Which two Net-Net 4500 Realm Bridging models are valid in a SIP environment?
Single SIP-NAT Homed in an Access Network (SSNHAN)
Policy-Based Realm Bridging with Header Manipulation Rules (PBRB-HMR)
Which two alarm reporting mechanisms are available to provide fault information for your Session Border Controller in a VOIP network?
Rear craft interface display
Via the show system-alarms ACLI command
Which two SIP request Methods are defined by RFC 3261?
What are two differences between the SIP NAT Bridge (SNB) and the Single SIP NAT Homed in a Trusted Network (SSNHTN) models on the Session Border Controller?
In a SIP-NAT Bridge (SNB), multiple access and backbone realms are allowed. In the SSNHTN model, only one backbone realm is allowed.
In the SSNHTN model, the home proxy address(HPA) is set to point to sipd.
The h245-stage parameter in the h323-stack element determines___________.
The stage at which the Net-Net 4500 will indicate that a separate H.245 connection must be opened
The __________ parameter in the sip-interface element indicates how often a User Agent (UA) located behind a NAT should re-register with the Session Border Controller.
Which statement is FALSE about the sub-port-id field within a network-interface configuration?
The sub-port-id allows for multiple network-interface configuration elements to be bound to a single physical interface.
According to the Acme Packet Best Current Practice (BCP), when configuring High Availability on a Session Border Controller pair, what two critical steps must be completed?
Synchronize the configurations and system states between the two systems via the sync-config and sync-state commands, followed by the save-configuration and activate-configuration commands.
Connect the HA-serial 1 and HA-serial 2 RS-232 interfaces together to provide state replication and heartbeat polling between the two systems.
Which statement about the Net-Net 4500 is FALSE?
Different SIP Response Code mappings can be configured for each Soft-switch to which the Net-Net 4500 signals.
On a Net-Net 4500, a hardware-based timer will reset the system in the event of a catastrophic software or operating system failure. This hardware timer is reset (preventing it from triggering) by the__________.
__________is the percentage of a Session Border Controller's peer advertisement time for the other peer in the high availability (HA) pair to wait before considering the peer out of service.
Which two statements about realms are TRUE?
You must have a minimum of three realms in any configuration, one of which must be designated as the home realm.
You can associate multiple network interfaces with a single realm.
With a default configuration, how long is the grace period before the Session Border Controller deletes an expired registration entry from the cache?
What establishes, modifies and removes CAM entries for packet forwarding?
Acme Packet Session Descriptor (APSD)
Which two statements about H.323 on the Net-Net 4500 are TRUE?
Only a single virtual gateway can exist on a single Net-Net 4500.
The Net-Net 4500 can be configured to allow interworking between H.323 and MGCP.
You are logged into the Session Border Controller as superuser.You want to remove other users from the system. What telnet command is available to remove other users?
Remove user <index number>
Which two configuration objects are NOT required to enable SIP signaling to traverse the Session Border Controller?
To view an existing multiple-instance element's configuration you can go to the correct branch of the configuration tree and___________.
Type show <element name>.
RRQ, ARQ, DRQ, and IRR are all examples of ________ signaling messages.
A steering pool defines__________.
A range of ports used to route media flows as they egress the Net-Net 4500.
All of the following are components of the Session Border Controller's OS Media Control function, except:
Media supervision timers/call teardown
The Net-Net 4500 will release media between non-NATed SIP endpoints that are located in the same realm when the __________ parameter is set to ___________.
You are working with a Net-Net 4500 Session Border Controller.What will result from the execution of the delete-configuration command?
Automatic reboot of the operating system.
Which option tag is used for reliability of provisional responses in SIP messages?
Which is NOT part of the Net-Net 4500's front panel:
A flip-down door covering two PCMCIA slots
Once the management network interface is configured, what can it be used for?
Software upgrades and System configuration
How many VLANs per physical interface are supported on a Session Border Controller?
What needs to be done to enable Physical Interface Redundancy (phy link redundancy)?
Set link-redundancy-state to enabled in the network-interface.
You are enabling management access on a network interface in the Session Border Controller. Which two are applicable?
Which two statements about the Session Initiation Protocol (SIP) are TRUE?
SIP uses the Session Description Protocol to identify media details for the call being set up.
SIP messages are formatted in MIME/64 hex format.
To replace the Session Border Controller's running configuration with a previous configuration, perform the following:
Use the restore-backup-config command, followed by save and activate.
What does the host inet in the boot parameters of the Session Border Controller refer to?
The IP Address of the Destination SIP Device with which the Net-Net SD needs to interact
Which two statements regarding SIP processing are TRUE?
An initial INVITE will contain a From header tag and a To header tag as a globally unique identifier for the dialog.
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.
In a peering environment based on SIP-NAT Bridge, which two elements must be configured to accommodate signaling and media?
SIP Manipulation Rule
Which two parameters are NOT phy-interface parameters?