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AP0-001 Sample Questions Answers

Questions 4

The __________ field value in the network interface configuration is used as the source IP address for ARP requests from the secondary Net-Net 4000 in a highly available pair when in the standby role.

Options:

A.

sec-utility-address

B.

pri-utility-addr

C.

ip-address

D.

arp-address

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Questions 5

The h245-stage parameter in the H323 stack determines____________.

Options:

A.

The stage at which the Net-Net 4000 will start tunneling H.245 messages

B.

The point in the call where H.245 messages are allowed, given that the call has been connected

C.

The stage at which the Net-Net 4000 will indicate that a separate H.245 connection must be opened or will react to an external indication to open a separate H.245 connection

D.

The point at which H.245 will appear on stage

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Questions 6

Which three of the following are NAPT mappings that are pulled by the Standby node during media state checkpointing in high availability (HA) architectures?

Options:

A.

Source port

B.

Protocol ID

C.

Route

D.

Ingress Interface

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Questions 7

In a high availability (HA) scenario, if peers boot simultaneously and their health scores are equivalent, which node automatically assumes the role of Active?

Options:

A.

The node that had the role of active last.

B.

The node that had the role of standby last.

C.

The node with the highest Wancom IP address.

D.

The node with the lowest Wancom IP address.

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Questions 8

How does the Net-Net 4000 ensure that the pinholes are kept open for persistent communication to SIP endpoints behind a NAT device?

Options:

A.

By sending OPTIONS messages at a defined frequency

B.

By sending ARP requests at a defined frequency

C.

By changing the expires= parameter to a defined value in 200 OK responses to REGISTERs

D.

By changing the expires= parameter to a defined value in 200 OK responses to INVITEs

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Questions 9

A(n) __________ is an association between a globally unique SIP or SIPS URI and the user agent's contact address. This association is written by the registrar server to a database where it can be used by a proxy in the local domain.

Options:

A.

location record

B.

AOR

C.

binding

D.

public address

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Questions 10

The __________ field indicates whether or not an H.323 stack runs as a gateway.

Options:

A.

isgatekeeper

B.

mode

C.

gw-identifier

D.

isgateway

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Questions 11

You configure the _____________and _____________elements to use the Net-Net 4000 to perform load balancing between two downstream SIP proxies.

Options:

A.

realm steering pool

B.

local policy session agent group

C.

session router session router group

D.

proxy proxy pool

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Questions 12

An alarm is triggered in a high available (HA) pair when there is a condition or event within the __________.

Options:

A.

software only

B.

hardware only

C.

software or hardware

D.

ACLI

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Questions 13

__________ is the Net-Net 4000 internal SIP proxy, responsible for processing the SIP header addressing information and passing the signaling to the egress realm

Options:

A.

Sipd

B.

Mbcd

C.

Algd

D.

Sipp

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Questions 14

Which two of the following statements about realms are TRUE?

Options:

A.

You must have a minimum of three realms in any configuration as one realm must be designated as the home realm.

B.

All endpoints within a realm must reside within the same subnet as the Net-Net 4000.

C.

Although you can use both TCP and UDP concurrently as the transport protocol, you can only have one SIP-interface per realm.

D.

You can associate multiple realms with a single network interface.

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Questions 15

RRQ, ARQ, DRQ, and IRR are all examples of __________ signaling messages.

Options:

A.

H.225.0 RAS

B.

SIP

C.

MGCP

D.

H.245

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Questions 16

A __________ is a logical definition on the Net-Net Session Director of a network or group of networks composed partly of devices that provide real-time communication sessions made up of signaling messages and potentially media flows.

Options:

A.

realm

B.

steering pool

C.

session agent group

D.

session agent

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Questions 17

You have copied a new Net-Net OS to the Net-Net 4000 and changed the boot parameters according to the display below. On reboot, the Net-Net 4000 is in a boot loop.

training1# check-space-remaining boot boot:

0/29702144 bytes (0%) remaining

training1# configure terminal

training1(configure)# bootparam

'.' = clear field; '-' = go to previous field; q = quit

boot device : wancom0

processor number : 0

host name :

file name : /tffs0/sd200p23.gz /tffs0/sd400q10.gz

inet on ethernet (e) : 10.0.3.11:ffff0000

inet on backplane (b) :

host inet (h) : 10.0.3.1

gateway inet (g) : 10.0.0.1

user (u) : anonymous

ftp password (pw) (blank = use rsh) : anonymous

flags (f) : 0x80008

target name (tn) : training1

startup script (s) :

other (o) :

NOTE: These changed parameters will not go into effect until reboot. Also, be aware that some boot parameters may also be changed through PHY and Network Interface Configurations.

training1(configure)# exit

training1# reboot force

Based on the information above, which three of the following scenarios could be the cause of the boot loop?

Options:

A.

You did not copy the Net-Net OS file into the /boot directory.

B.

The Net-Net OS file was truncated while being copied to the /boot directory due to lack of file space.

C.

You mistyped the name of the Net-Net OS file in the file name property of the boot parameters.

D.

The Net-Net 4000 was reset using the reboot force command without saving and activating the configuration changes first.

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Questions 18

When configuring the Net-Net 4000, __________ SIP interface(s) is/are allowed per realm, and __________ SIP port(s) is/are allowed for a SIP interface.

Options:

A.

multiple multiple

B.

1 1024

C.

multiple 999

D.

1 multiple

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Questions 19

Upon issuing the done command, you get an Error 409. What does this error indicate?

Options:

A.

The element you are creating is corrupted.

B.

The element you are trying to save doesn't exist.

C.

You are trying to create an element with a unique identifier that already exists.

D.

There is an internal server error.

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Questions 20

Which one of the following statements is TRUE when H245 tunneling is enabled on the Net-Net 4000. The Net-Net 4000 will________________.

Options:

A.

tunnel signaling messages over the H.245 connection

B.

establish a separate TCP connection to tunnel messages

C.

tunnel H.245 messages over H.225.0 FACILITY messages

D.

support the Generic Tunneling Protocol (GTP) for sending SIP messages over the H.245 connection

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Questions 21

To enable the Net-Net 4000 to provide next hop signaling load balancing, which two of the following licenses must be installed?

Options:

A.

session agent group

B.

load balancing

C.

routing

D.

local policy

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Questions 22

In high availability (HA) architectures, changes to the state of the Active Net-Net 4000 are queued in journals. Requests from the Standby node results in information about these changes being pulled by Standby from the Active node. The three checkpointed states are __________, __________ and __________.

Options:

A.

configuration state

B.

alarm state

C.

media state

D.

signaling state

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Questions 23

When two associated H323 stacks in different realms have the gatekeeper parameter defined, which one of the following statements is TRUE?

Options:

A.

The Net-Net 4000 will proxy LRQ and LCF messages from one gatekeeper to the other and the TCP connection for H.225.0 will be established afterwards.

B.

The Net-Net 4000 will respond locally to the LRQ with a LCF, and upon receiving the SETUP on the ingress leg, will open the TCP connection on the egress leg to send the SETUP.

C.

It is not possible to have two associated H323 stacks when both have gatekeepers defined.

D.

Registrations will be forwarded from one Gatekeeper to the other using unique RRQ messages.

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Questions 24

Examine the H323 stack configuration below.

Based on the information above, which one of the following IP addresses should be configured as a hip-ip-address in the appropriate network interface?

Options:

A.

0.0.0.0

B.

172.16.0.100

C.

172.16.0.13

D.

172.16.0.0

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Questions 25

Which one of the following statements is TRUE when H245 tunneling is enabled on the Net-Net 4000. The Net-Net 4000 will________________.

Options:

A.

tunnel signaling messages over the H.245 connection

B.

establish a separate TCP connection to tunnel messages

C.

tunnel H.245 messages over H.225.0 FACILITY messages

D.

support the Generic Tunneling Protocol (GTP) for sending SIP messages over the H.245 connection

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Questions 26

When two associated H323 stacks in different realms have the gatekeeper parameter defined, which one of the following statements is TRUE?

Options:

A.

The Net-Net 4000 will proxy LRQ and LCF messages from one gatekeeper to the other and the TCP connection for H.225.0 will be established afterwards.

B.

The Net-Net 4000 will respond locally to the LRQ with a LCF, and upon receiving the SETUP on the ingress leg, will open the TCP connection on the egress leg to send the SETUP.

C.

It is not possible to have two associated H323 stacks when both have gatekeepers defined.

D.

Registrations will be forwarded from one Gatekeeper to the other using unique RRQ messages.

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Questions 27

Best current practice for the initial turn-up of a secondary node in a highly available (HA) pair calls for the acquire-config command targeting the ____________________interface on the primary node.

Options:

A.

Wancom0

B.

Wancom1

C.

Wancom2

D.

Wancom3

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Questions 28

Which two the following statements about access to the Net-Net 4000 file system are TRUE?

Options:

A.

The Net-Net 4000 supports SFTP.

B.

You change the Net-Net 4000 internal FTP passwords by changing the User and Superuser mode passwords.

C.

The SD OS has a built in mechanism to prevent file system corruption.

D.

You should FTP software to the /code directory of the Net-Net 4000 flash memory when booting from /tffs0.

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Questions 29

High availability (HA) nodes identify one another by their __________ names.

Options:

A.

Identifier

B.

Host

C.

mib-system-name

D.

target

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Questions 30

Upon issuing the done command, you get an Error 409. What does this error indicate?

Options:

A.

The element you are creating is corrupted.

B.

The element you are trying to save doesn exist.B. The element you are trying to save doesn? exist.

C.

You are trying to create an element with a unique identifier that already exists.

D.

There is an internal server error.

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Questions 31

Examine the H323 stack configuration below.

Based on the information above, which one of the following IP addresses should be configured as a hip-ip-address in the appropriate network interface?

Options:

A.

0.0.0.0

B.

172.16.0.100

C.

172.16.0.13

D.

172.16.0.0

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Questions 32

Which two of the following statements regarding SIP processing are FALSE?

Options:

A.

An initial INVITE will contain a From header tag and a To header tag as a globally unique identifier for the dialog.

B.

To avoid retransmissions, User Agents must forward received 100 Trying messages to their next hop.

C.

Calls Per Second are typically measured using a 7-10 message SIP call flow including call set-up and tear down.

D.

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.

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Questions 33

Which one of the following statements about the Net-Net 4000 is TRUE?

Options:

A.

When the status LED, which is located on the front of the chassis control panel is lit yellow, it is an indication that the Net-Net system is experiencing a major malfunction such as a power supply failure.

B.

You can have up to two simultaneous console connections.

C.

By default, you can only Telnet to the wancom0 interface on the Net-Net 4000.

D.

By default, the Net-Net 4000 media interfaces will respond to PING.

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Questions 34

Using the command show redundancy sipd, redundancy statistics and transactions are displayed. Which 3 of the following statistics provide information about the state of SIP signaling checkpointing?

Options:

A.

CPU Utilization

B.

Error responses

C.

Retransmissions sent

D.

Duplicate requests

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Questions 35

In a high availability (HA) scenario, a node has a state of becoming Standby". This state indicates __________.

Options:

A.

a transitory state as the active node initially moves to becoming the standby node.

B.

the standby node is out of service.

C.

the standby node is taking the active role.

D.

the active node is out of service.

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Questions 36

You have used the no command to delete a configuration element. Which one of the following statements is TRUE?

Options:

A.

The deletion takes effect immediately.

B.

The deletion requires a reboot to take effect.

C.

The deletion is lost on immediate reboot.

D.

The deletion is reflected when viewing the running configuration.

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Questions 37

RRQ, ARQ, DRQ, and IRR are all examples of __________ signaling messages.

Options:

A.

H.225.0 RAS

B.

SIP

C.

MGCP

D.

H.245

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Questions 38

The Net-Net 4000 supports __________ VLANs per physical interface.

Options:

A.

1024

B.

6000

C.

999

D.

4095

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Questions 39

In high availability (HA) architectures, changes to the state of the Active Net-Net 4000 are queued in journals. Requests from the Standby node results in information about these changes being pulled by Standby from the Active node. The three checkpointed states are __________, __________ and __________.

Options:

A.

configuration state

B.

alarm state

C.

media state

D.

signaling state

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Questions 40

Of the following configured local policy preferences that the Net-Net 4000 sorts through, which one of the four preference discriminators listed below would be ranked the second highest priority?

Options:

A.

codec

B.

lowest cost

C.

next hop

D.

realm

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Questions 41

Which two of the following scenarios about 503 Service Unavailable response codes on the Net-Net 4000 are TRUE?

Options:

A.

503 Service Unavailable messages are never generated by the Net-Net 4000.

B.

A 503 Service Unavailable will be originated when the Net-Net 4000 is unable to forward a request due to session agent constraint or lack of bandwidth.

C.

The Net-Net 4000 will originate a 503 Service Unavailable when it has no call processing resources.

D.

By default, when the Net-Net 4000 has reached 95% CPU utilization, it will originate 503 Service Unavailable responses for all calls.

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Questions 42

If upon examination of two configuration files you notice that the version number of the permanently saved configuration differs from the version number of the running configuration, it means that __________.

Options:

A.

the saved configuration file has been edited, but the done command was not issued

B.

the saved configuration file has been copied from flash into SDRAM using the save-config command

C.

the saved configuration file has been saved into flash, but the activate-config command has not been issued

D.

the saved configuration file was copied from flash into SDRAM using the activate-config command

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Exam Code: AP0-001
Exam Name: Acme Packet Certification Certification Exams Boot camp & Braindump
Last Update: Jul 18, 2024
Questions: 140
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