exam questions

Exam CISSP All Questions

View all questions & answers for the CISSP exam

Exam CISSP topic 1 question 128 discussion

Actual exam question from ISC's CISSP
Question #: 128
Topic #: 1
[All CISSP Questions]

Which is MOST important when negotiating an Internet service provider (ISP) service-level agreement (SLA) by an organization that solely provides Voice over
Internet Protocol (VoIP) services?

  • A. Mean time to repair (MTTR)
  • B. Quality of Service (QoS) between applications
  • C. Financial penalties in case of disruption
  • D. Availability of network services
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
[Removed]
Highly Voted 1 year, 7 months ago
Selected Answer: D
ISP is providing the underlay only. QoS is responsibility of the customer using the internet service.
upvoted 6 times
...
Zapepelele
Most Recent 2 weeks, 3 days ago
Selected Answer: D
Answer is D. VoIP service is organization's responsibility, therefore, it's responsible for QoS too. Availability of network is ISP's responsibility, so I want these numbers when negotiating a SLA
upvoted 1 times
...
KJ44
1 month, 3 weeks ago
Selected Answer: D
Reliability is what you care about with VOIP.
upvoted 1 times
...
1460168
5 months ago
Selected Answer: D
It can not be b, because of the last words in the setence: "between apps". QoS between Apps!? Come on...
upvoted 2 times
...
Jarn
6 months, 1 week ago
Selected Answer: D
Only one application being provided, so it can't be B
upvoted 1 times
...
dm808
9 months ago
Selected Answer: B
The answer is B. QOS includes availability
upvoted 1 times
...
john_boogieman
9 months, 1 week ago
Selected Answer: D
It is the organization that provides the VoIP service, and it will be the one that must guarantee it. The ISP must guarantee the availability of the network and therefore this is the factor to be negotiated in the SLA.
upvoted 1 times
...
GuardianAngel
10 months, 3 weeks ago
they only have 1 application VoiceOverIP. There's no other applications to prioritize with QOS. If the network isn't available, there is no phone service since VOIP is completely dependent about the network.
upvoted 2 times
...
Moose01
1 year, 1 month ago
SLA is what services are purchased and guranteed by the ISP and they are bound to it, they are different level of services package with various SLA and prices, if QOS is dropping below the SLA it is considered an outage.
upvoted 1 times
...
thanhlb
1 year, 2 months ago
Selected Answer: D
organization solely provides Voice over Internet Protocol (VoIP) services, so only Voip traffic on the wire, do we need QoS than Availability?
upvoted 2 times
...
ExamTaker1995
1 year, 2 months ago
Selected Answer: D
The MOST important factor when negotiating an Internet Service Provider (ISP) service-level agreement (SLA) by an organization that solely provides Voice over Internet Protocol (VoIP) services would be: D. Availability of network services In a business where the sole service is VoIP, network availability is critical. If the network is down, the entire business operation could come to a halt, making availability a primary concern. VoIP is extremely sensitive to network downtime, and therefore, ensuring that the network is available is of utmost importance. While MTTR, QoS between applications, and financial penalties in case of disruption are also important factors to consider, they are secondary to ensuring that the network services are available for the core business offering of VoIP. This is aligned with best practices for SLAs in critical service delivery as per CISSP certification guidelines.
upvoted 3 times
isaac592
1 year, 2 months ago
We primarily used VoIP as the primary means of voice-communication throughout remote sites. When an entire forward site goes "red" on network connectivity, we would have to exercise the alternate or contingency plans to talk between sites. Cant just call em because the VoIP phones connected to the network dont work.
upvoted 1 times
...
ljkesmeer
1 year, 2 months ago
Voice is sensitive to QoS, I understand that the network availability is important but the availability of the network doesn't do much if it can't assure the call quality. thus I choose the QOS because that is the only thing that allows me to make sure the service is working properly
upvoted 2 times
...
...
homeysl
1 year, 2 months ago
Selected Answer: D
You usually see three or four or five 9s in an SLA but not QoS.
upvoted 2 times
...
Bach1968
1 year, 5 months ago
Selected Answer: B
Option B, Quality of Service (QoS) between applications, is indeed an important consideration when negotiating an Internet service provider (ISP) service-level agreement (SLA) for an organization that provides Voice over Internet Protocol (VoIP) services. QoS refers to the ability to prioritize and allocate network resources to ensure the desired level of performance for specific applications or services. In the case of VoIP, maintaining a consistent and high-quality connection is crucial to ensure clear and uninterrupted voice communications. Negotiating a robust QoS provision in the SLA would help prioritize VoIP traffic and ensure optimal performance.
upvoted 1 times
Kyanka
9 months, 3 weeks ago
Thanks, ChatGTP!
upvoted 1 times
...
...
HughJassole
1 year, 6 months ago
D, as your ISP is not responsible for your QoS: https://serverfault.com/questions/800826/is-quality-of-service-my-isps-responsibility I think QoS is thrown in there to trick you, because VOIP and QoS go together, but an ISP provides the internet service access, so they are about availability, not how your application works.
upvoted 4 times
...
Moose01
1 year, 7 months ago
Internet do not honor QOS tagging, Best Effort only.... However, ISP can provide some sort of contract guaranteeing the availability of the internet circuit and services (SLA). SLA is not necessarily available in every parts of the world, not even US or EU, only based on available infrastructure.
upvoted 2 times
...
JohnyDal
1 year, 10 months ago
Selected Answer: D
The isp only provides voip, so qos and contention will be never be an issue. Availability equates to uptime and is most imp
upvoted 4 times
jackdryan
1 year, 7 months ago
B is correct
upvoted 1 times
...
...
oban
1 year, 11 months ago
Selected Answer: B
B. Quality of Service (QoS) between applications is the most important when negotiating an Internet service provider (ISP) service-level agreement (SLA) by an organization that solely provides Voice over Internet Protocol (VoIP) services. QoS guarantees the availability of certain network resources, such as bandwidth, for specific types of traffic such as VoIP traffic, ensuring that voice calls are delivered with a minimum level of delay, jitter, and packet loss. This is critical for an organization that provides VoIP services, as poor QoS can result in poor call quality, dropped calls, and lost revenue. Source: openai
upvoted 2 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
Loading ...
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago