Modules 13 – 14: Emerging Network Technologies Exam Answers

admin Jan 15, 2020

Modules 13 – 14: Emerging Network Technologies Exam Answers

1. Which function of the Cisco intent-based networking system (IBNS) enables network operators to express the expected networking behavior that will best support the business intent?

activation
translation
assurance
ACL analysis

2. Which types of APIs are suitable for the data communication between a travel website and a hotel chain inquiring about room availability data?

open APIs
public APIs
internal APIs
partner APIs

3. Which characters are used to enclose a JSON key?

quotation marks
commas
square brackets
colons

4. Which character is used to separate JSON key/value pairs?

(comma) ,
(semi colon) ;
(dash) –
(forward slash) /

5. Which type of hypervisor would most likely be used in a data center?

Type 2
Type 1
Nexus
Hadoop

Explanation: The two type of hypervisors are Type 1 and Type 2. Type 1 hypervisors are usually used on enterprise servers. Enterprise servers rather than virtualized PCs are more likely to be in a data center.

6. Which is a characteristic of a Type 1 hypervisor?

installed directly on a server
best suited for consumers and not for an enterprise environment
does not require management console software
installed on an existing operating system

Explanation: Type 1 hypervisors are installed directly on a server and are known as “bare metal” solutions giving direct access to hardware resources. They also require a management console and are best suited for enterprise environments.

7. Which two layers of the OSI model are associated with SDN network control plane functions that make forwarding decisions? (Choose two.)

Layer 1
Layer 2
Layer 3
Layer 4
Layer 5

Explanation: The SDN control plane uses the Layer 2 ARP table and the Layer 3 routing table to make decisions about forwarding traffic.

8. What pre-populates the FIB on Cisco devices that use CEF to process packets?

the routing table
the adjacency table
the ARP table
the DSP

Explanation: CEF uses the FIB and adjacency table to make fast forwarding decisions without control plane processing. The adjacency table is pre-populated by the ARP table and the FIB is pre-populated by the routing table.

9. What is a function of the data plane of a network device?

sending information to the CPU for processing
building the routing table
resolving MAC addresses
forwarding traffic flows

Explanation: Networking devices operate in two planes; the data plane and the control plane. The control plane maintains Layer 2 and Layer 3 forwarding mechanisms using the CPU. The data plane forwards traffic flows.

10. Which statement describes the concept of cloud computing?

separation of application from hardware
separation of management plane from control plane
separation of operating system from hardware
separation of control plane from data plane

Explanation: Cloud computing is used to separate the application or service from hardware. Virtualization separates the operating system from the hardware.

11. Which cloud model provides services for a specific organization or entity?

a public cloud
a hybrid cloud
a private cloud
a community cloud

Explanation: Private clouds are used to provide services and applications to a specific organization and may be set up within the private network of the organization or managed by an outside organization.

12. What two benefits are gained when an organization adopts cloud computing and virtualization? (Choose two.)

provides a “pay-as-you-go” model, allowing organizations to treat computing and storage expenses as a utility
enables rapid responses to increasing data volume requirements
distributed processing of large data sets in the size of terabytes
elimination of vulnerabilities to cyber attacks
increases the dependance on onsite IT resources

Explanation: Organizations can use virtualization to consolidate the number of required servers by running many virtual servers on a single physical server. Cloud computing allows organizations to scale their solutions as required and to pay only for the resources they require.

13. Which type of Hypervisor is implemented when a user with a laptop running the Mac OS installs a Windows virtual OS instance?

type 2
virtual machine
type 1
bare metal

Explanation: Type 2 hypervisors, also know as hosted hypervisors, are installed on top of an existing operating system, such as Mac OS, Windows, or Linux.

14. A small company is considering moving many of its data center functions to the cloud. What are three advantages of this plan? (Choose three.)

The company only needs to pay for the amount of processing and storage capacity that it uses.
Cloud services are billed at a fixed fee no matter how much processing and storage are used by the company.
The company does not need to be concerned about how to handle increasing data storage and processing demands with in-house data center equipment.
The company can increase processing and storage capacity as needed and then decrease capacity when it is no longer needed.
Single-tenant data centers can easily grow to accommodate increasing data storage requirements.
Cloud services enable the company to own and administer its own servers and storage devices.

Explanation: Cloud computing offers many advantages to the company. Since the cloud data storage and processing facilities are owned by third-parties, the company does not need to be concerned about how it will handle increasing data storage and processing demands with its own data center equipment. The company can easily increase or decrease processing power and storage capacity based on need. Also, cloud services are billed by usage, so the company does not have the costs of supporting its own expensive data center that is not always used to maximum capacity.

15. How does virtualization help with disaster recovery within a data center?

support of live migration
guarantee of power
improvement of business practices
supply of consistent air flow

Explanation: Live migration allows moving of one virtual server to another virtual server that could be in a different location that is some distance from the original data center.

16. What technology allows users to access data anywhere and at any time?

Cloud computing
virtualization
micromarketing
data analytics

Explanation: Cloud computing allows organizations to eliminate the need for on-site IT equipment, maintenance, and management. Cloud computing allows organizations to expand their services or capabilities while avoiding the increased costs of energy and space.

17. Which action takes place in the assurance element of the IBN model?

verification and corrective action
configuring systems
translation of policies
integrity checks

Explanation: The assurance element of the IBN model is concerned with end-to-end verification of network-wide behavior.

18. Refer to the exhibit. Which data format is used to represent the data for network automation applications?

XML
YAML
HTML
JSON

Explanation: The common data formats that are used in many applications including network automation and programmability are as follows:

JavaScript Object Notation (JSON) – In JSON, the data known as an object is one or more key/value pairs enclosed in braces { }. Keys must be strings within double quotation marks ” “. Keys and values are separated by a colon.
eXtensible Markup Language (XML) – In XML, the data is enclosed within a related set of tags <tag>data</tag>.
YAML Ain’t Markup Language (YAML) – In YAML, the data known as an object is one or more key value pairs. Key value pairs are separated by a colon without the use of quotation marks. YAML uses indentation to define its structure, without the use of brackets or commas.

19. What is the function of the key contained in most RESTful APIs?

It is the top-level object of the API query.
It is used to authenticate the requesting source.
It represents the main query components in the API request.
It is used in the encryption of the message by an API request.

Explanation: Many RESTful APIs, including public APIs, require a key. The key is used to identify the source of the request through authentication.

20. Which two configuration management tools are developed using Ruby? (Choose two.)

Puppet
Ansible
SaltStack
Chef
RESTCONF

Explanation: Chef and Puppet are configuration management tools developed using Ruby. Ansible and SaltStack are configuration management tools developed using Python. Ruby is typically considered a more difficult language to learn than Python. RESTCONF is a network management protocol.

21. Which term is used to describe a set of instructions for execution by the configuration management tool Puppet?

Playbook
Cookbook
Manifest
Pillar

Explanation: The configuration management tool Puppet uses the name Manifest to describe the set of instructions to be executed.

22. Which term is used to describe a set of instructions for execution by the configuration management tool SaltStack?

Cookbook
Manifest
Pillar
Playbook

Explanation: The configuration management tool SaltStack uses the name Pillar to describe the set of instructions to be executed.

23. Which scenario describes the use of a public API?

It requires a license.
It can be used with no restrictions.
It is used between a company and its business partners.
It is used only within an organization.

Explanation: Public, or open, APIs have no restrictions and are available to the public. Some API providers do require a user to obtain a free key or token prior to using the API in order to control the volume of API requests received and processed.

24. What is YAML?

It is a scripting language.
It is a data format and superset of JSON.
It is a compiled programming language.
It is a web application.

Explanation: Like JSON, YAML Ain’t Markup Language (YAML) is a data format used by applications to store and transport data. YAML is considered a superset of JSON.

25. Which RESTFul operation corresponds to the HTTP GET method?

post
patch
update
read

Explanation: RESTful operations correspond to the following HTTP methods (shown to the left with the RESTful operation on the right):

POST > Create
GET > Read
PUT/PATCH > Update
DELETE > Delete

26. Which technology virtualizes the network control plane and moves it to a centralized controller?

SDN
fog computing
cloud computing
IaaS

Explanation: Networking devices operate in two planes: the data plane and the control plane. The control plane maintains Layer 2 and Layer 3 forwarding mechanisms using the CPU. The data plane forwards traffic flows. SDN virtualizes the control plane and moves it to a centralized network controller.

27. What are two functions of hypervisors? (Choose two.)

to partition the hard drive to run virtual machines
to manage virtual machines
to protect the host from malware infection from the virtual machines
to share the antivirus software across the virtual machines
to allocate physical system resources to virtual machines

Explanation: The hypervisor does not protect the hosting OS from malware. Neither does it allow sharing software across virtual machines. The hard drive of the supporting computer does not need to be partitioned to run virtual machines. The hypervisor creates and manages virtual machines on a host computer and allocates physical system resources to them.

28. What is a difference between the functions of Cloud computing and virtualization?

Cloud computing requires hypervisor technology whereas virtualization is a fault tolerance technology.
Cloud computing separates the application from the hardware whereas virtualization separates the OS from the underlying hardware.
Cloud computing provides services on web-based access whereas virtualization provides services on data access through virtualized Internet connections.
Cloud computing utilizes data center technology whereas virtualization is not used in data centers.

Explanation: Cloud computing separates the application from the hardware. Virtualization separates the OS from the underlying hardware. Virtualization is a typical component within cloud computing. Virtualization is also widely used in data centers. Although the implementation of virtualization facilitates an easy server fault tolerance setup, it is not a fault tolerance technology by design. The Internet connection from a data center or service provider needs redundant physical WAN connections to ISPs.

29. How is the YAML data format structure different from JSON?

It uses indentations.
It uses end tags.
It uses hierarchical levels of nesting.
It uses brackets and commas.

Explanation: The structure in YAML is defined by indentations rather than brackets and commas.

30. What is the most widely used API for web services?

XML-RPC
SOAP
JSON-RPC
REST

Explanation: REST accounts for more than 80% of all API types used for web services, making it the most widely used web service API.

31. What is REST?

It is a way to store and interchange data in a structured format.
It is an architecture style for designing web service applications.
It is a human readable data structure that is used by applications for storing, transforming, and reading data.
It is a protocol that allows administrators to manage nodes on an IP network.

Explanation: REST is not a protocol or service, but rather a style of software architecture for designing web service applications.

32. What is a difference between the XML and HTML data formats?

XML does not use predefined tags whereas HTML does use predefined tags.
XML encloses data within a pair of tags whereas HTML uses a pair of quotation makes to enclose data.
XML formats data in binary whereas HTML formats data in plain text.
XML does not require indentation for each key/value pair but HTML does require indentation.

Explanation: XML is a human readable data structure used to store, transfer, and read data by applications. Like HTML, XML uses a related set of tags to enclose data. However, unlike HTML, XML uses no predefined tags or document structure.

33. To avoid purchasing new hardware, a company wants to take advantage of idle system resources and consolidate the number of servers while allowing for multiple operating systems on a single hardware platform. What service or technology would support this requirement?

dedicated servers
Cisco ACI
virtualization
software defined networking

34. Match the term to the RESTful API request http://www.mapquestapi.com/directions/v2/route?outFormat=json&key=KEY&from=San+Jose,Ca&to=Monterey,Ca component. (Not all options are used.)

35. Which cloud computing opportunity would provide the use of network hardware such as routers and switches for a particular company?

software as a service (SaaS)
wireless as a service (WaaS)
infrastructure as a service (IaaS)
browser as a service (BaaS)

Explanation: This item is based on information contained in the presentation.
Routers, switches, and firewalls are infrastructure devices that can be provided in the cloud.

36. What component is considered the brains of the ACI architecture and translates application policies?

the Application Network Profile endpoints
the Nexus 9000 switch
the hypervisor
the Application Policy Infrastructure Controller

Explanation: The ACI architecture consists of three core components: the Application Network Profile, the Application Policy Infrastructure Controller, which serves as the brains of the ACI architecture, and the Cisco Nexus 9000 switch.

37. Which statement describes the concept of cloud computing?

separation of management plane from control plane
separation of control plane from data plane
separation of application from hardware
separation of operating system from hardware

Explanation: Cloud computing is used to separate the application or service from hardware. Virtualization separates the operating system from the hardware.

38. In which situation would a partner API be appropriate?

an internet search engine allowing developers to integrate the search engine into their own software applications
company sales staff accessing internal sales data from their mobile devices
someone creating an account on an external app or website by using his or her social media credentials
a vacation service site interacting with hotel databases to display information from all the hotels on its web site

Explanation: Partner API programs incorporate collaboration with other business. They facilitate communication
and integration of software between a company and its business partners.

39. Because of enormous growth in web traffic, a company has planned to purchase additional servers to help handle the web traffic. What service or technology would support this requirement?