Oracle 1Z0-954 Certification Sample Questions and Answers

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Oracle 1Z0-954 Sample Questions:

01. Traffic sent by a session border controller reaches a peer normally, while traffic the peer sends toward the device does not arrive. Both directions traverse the same physical link.
What does the one-way behavior indicate?
a) A fault above the link layer, since a broken link would remove both directions
b) A duplex disagreement, which suppresses one direction while permitting the other
c) A speed mismatch, since the slower end can send but is unable to receive
d) A failed optic, which stops the link and therefore both directions at once
 
02. Both nodes of a session border controller pair are asserting the serving role at the same time. Peers around them report intermittent and inconsistent behavior toward the pair's shared address.
What is the most probable cause?
a) The surrounding network is forwarding to both nodes
b) The nodes have lost sight of one another and each has concluded it should serve
c) Both nodes have been commanded into service by an operator
d) The shared addressing has been configured on both nodes
 
03. Under pressure to restore service, an engineer applies four changes to a session border controller at once. The fault clears.
What is the cost of having proceeded that way?
a) The cause remains unknown, so the fault can return and three changes are unjustified
b) The changes cannot be reversed individually, because a device applies a set of simultaneous edits as a single unit that has to be withdrawn in its entirety if any part of it is unwanted
c) The device will need to be restarted before the changes take effect
d) The accounting records for the period will be inconsistent
 
04. Subscribers report that calls are being cut off after a period of silence, while both parties were still on the line and expected the call to continue.
What does this pattern most likely indicate?
a) The far end cleared the call after detecting that no audio had arrived for some time
b) The codec suppresses transmission during silence and the gap was read as a failure
c) Media supervision cleared the session because no traffic was arriving for it
d) The signaling dialog expired because no mid-dialog message was exchanged in that time
 
05. After a restart, a session border controller responds on its management address and its processes are running. Its realms and service interfaces are present in the running configuration, yet every service interface remains down and no signaling is received.
Which reading of the boot sequence best fits this evidence?
a) The signaling processes crashed some time after the interfaces had come into service and settled
b) The image failed to load and the platform is running a recovery image
c) The configuration was never read and the device holds no settings at all
d) The platform and image stages completed while the service interfaces failed to initialize
 
06. Service has just moved between the nodes of a session border controller pair. The shared addressing the surrounding peers use has not changed.
What must the neighboring network devices do?
a) Resolve the name of the pair again so that they obtain the address belonging to the node that is now in service
b) Update their record of which physical port that addressing now sits behind
c) Re-establish their signaling relationships with the pair
d) Adjust their routing so that traffic for the pair is directed toward the newly serving node's own individual address
 
07. Two service interfaces on a session border controller have been addressed into ranges that overlap one another. Traffic for some destinations behaves unpredictably, while the rest is unaffected.
Why does only part of the traffic suffer?
a) Only destinations reached through the default gateway are affected by the overlap
b) Only destinations carrying media are affected, because media uses separate addressing
c) Only destinations belonging to realms that share a physical port are affected by it
d) Only destinations inside the overlap have more than one interface claiming them
 
08. The SIP statistics on a session border controller show a large and rising count of retransmitted requests toward one peer, while the count of final responses received from that peer has not risen with it.
What does that combination indicate?
a) The device is duplicating requests because the same call has been routed to the peer more than once
b) The peer is answering correctly but its responses are being counted against a different peer
c) Requests are being sent and not answered, so the exchange is failing in one direction or beyond
d) The peer is rejecting the requests, and each rejection causes the device to send the request again until the configured limit on attempts or the transaction timeout has been reached
 
09. An engineer must watch a session border controller restart from the very beginning of its boot sequence. The device applies its management addressing only part-way through that sequence.
Which access method allows the earliest boot output to be observed?
a) A secure shell session to the platform's management address
b) An SNMP poll of the platform's system objects
c) A syslog stream received at an off-box collector
d) A serial console session on the platform's console port
 
10. During a peak period, a proportion of calls through a session border controller complete their signaling exchange but carry no audio. Calls attempted at quieter times on the same realm are unaffected.
Which cause fits the load dependence?
a) The routing policy selects a different peer at peak, and that peer carries no audio
b) The far end is rejecting the session descriptions offered to it during busy periods
c) The media addressing available to the realm has been fully allocated at that load
d) The access control on the realm is discarding the media arriving during those periods

Answers:

Question: 01

Answer: a

Question: 02

Answer: b

Question: 03

Answer: a

Question: 04

Answer: c

Question: 05

Answer: d

Question: 06

Answer: b

Question: 07

Answer: d

Question: 08

Answer: c

Question: 09

Answer: d

Question: 10

Answer: c

 

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