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Common Technical Interview Questions and Answers Update on July 30, 2021

Exam Question 81

Are DevOps and site reliability engineering (SRE) synonymous?

A. Yes
B. No
C. Both A and B
Correct Answer:
C. Both A and B
Answer Description:
Time to confess: This was a trick question. DevOps and SRE cover a lot of the same ground with many of the same goals. SRE is also focused heavily on automation and the reduction of manual interaction with application operation and management. But, while DevOps practices can extend outside of IT into the business, SRE is focused — almost exclusively — on IT itself.

Exam Question 82

True or false: Modern apps are designed to support the DevOps methodology.

A. True
B. False
Correct Answer:
A. True
Answer Description:
Despite the decade-long refrain that DevOps is a methodology, not a tool set, there is now a broad spectrum of tools designed specifically to perform vital actions in a DevOps pipeline. While DevOps tool is a misnomer, the reality is that vendors are building tools that support DevOps tenets, like CI/CD, modularization, broadly applied automation and more comprehensive monitoring efforts. And, while those tools can be used by non-DevOps organizations, they are a prime gateway to a wide-scale takeover.

Exam Question 83

Which of the following are some basic network requirements for 5G, as specified by the 3rd Generation Partnership Project (3GPP)?

A. Priority, policy, policy control and QoS
B. Efficient signaling, fixed mobile convergence, enhanced mobility management and network capability exposure
C. Network slice selection function, network repository function, user plane function and policy control function
D. Network slicing, efficiency, diverse mobility management and connectivity models
Correct Answer:
D. Network slicing, efficiency, diverse mobility management and connectivity models

Exam Question 84

True or false: The process of 5G tunneling enables subscriber access through multiaccess networks in seamless, integrated fashion.

A. True
B. False
Correct Answer:
B. False

Exam Question 85

What is the definition of QoS?

A. A set of rules specifying the user plane services and functions available to a particular user, supplied by the network
B. The measurable end-to-end performance properties of a network service, which can be guaranteed in advance by a service-level agreement (SLA) between a user and a service provider
C. The process by which network resources are controlled to implement a given policy for a given user
D. A value assigned to specific packets transmitted to/from a user that determines the relative importance of transmitting those packets during the upcoming opportunity to use the medium
Correct Answer:
B. The measurable end-to-end performance properties of a network service, which can be guaranteed in advance by a service-level agreement (SLA) between a user and a service provider

Exam Question 86

Which of the following are some common functions used to provide QoS in the data plane?

A. Session management function, user plane function, policy control function and network repository function
B. Flow bit rates, aggregate bit rates, notification control and default values
C. Traffic classification, packet marking, traffic shaping and congestion avoidance
D. Resource type, priority level, packet error rate and maximum data burst volume
Correct Answer:
C. Traffic classification, packet marking, traffic shaping and congestion avoidance

Exam Question 87

True or false: SLAs typically represent an agreement between a customer and a provider of a service that specifies the level of availability, serviceability, performance, operation or other attributes of the service.

A. True
B. False
Correct Answer:
A. True

Exam Question 88

Which is a common function used to provide QoS in the management plane?

A. SLA
B. Traffic restoration
C. Policy
D. All of the above
Correct Answer:
D. All of the above

Exam Question 89

What is the difference between QoS parameters and characteristics?

A. QoS parameters are used at configuration time to determine the network resources needed for creating network slices. QoS characteritics are more relevant to dynamic decisions made during the operation of the QoS flow, such as using the priority level as a tiebreaker when two flows compete for resources.
B. QoS parameters are more relevant to dynamic decisions made during the operation of the QoS flow, such as using the priority level as a tiebreaker when two flows compete for resources. QoS characteristics are used at configuration time to determine the network resources needed for creating network slices.
C. QoS parameters are variables that are typically the same for a wide variety of instances of an application. QoS characteristics define the requirements associated with a QoS flow.
D. None of the above
Correct Answer:
A. QoS parameters are used at configuration time to determine the network resources needed for creating network slices. QoS characteritics are more relevant to dynamic decisions made during the operation of the QoS flow, such as using the priority level as a tiebreaker when two flows compete for resources.

Exam Question 90

Which is an operational requirement for network slicing, as specified by 3GPP?

A. Support is needed to provide connectivity to home and roaming users in the same network slice.
B. Creation, modification and deletion of a network slice should have no or minimal impact on traffic and services in other network slices in the same network.
C. Operators must apply all the requirements to their allocated network resources.
D. IP Multimedia Subsystem needs to be supported independent of network slices.
Correct Answer:
B. Creation, modification and deletion of a network slice should have no or minimal impact on traffic and services in other network slices in the same network.

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