Which cloud-based service offers the highest degree of integration?

Which cloud-based service offers the highest degree of integration?

• SaaS
• AaaS
• CaaS
• PaaS

Integration: The Cloud's Big Challenge

There's an elephant in the room. And that elephant is cloud integration.
Although cloud evangelists are quick to point out the benefits of cloud computing technologies, enterprise leaders have identified integration as a major obstacle to successfully adopting and deploying Software as a Service (SaaS) and other web-based applications.
In a recent survey, nearly 90% of respondents claimed integration with existing systems to be a "common" or "very common" hurdle. While SaaS applications promise greater flexibility and lower costs, they also present new challenges to the enterprise: cloud integration. With the procurement of each new SaaS application, enterprise data becomes segregated into cloud silos, a problem exacerbated by the increasing number of vendors in the SaaS market and the ease of obtaining such services.

Further, the adoption of other cloud computing models such as Platform as a Service (PaaS) and Infrastructure as a Service (IaaS) and the growing popularity of mobile applications and social media platforms means that additional data and processes are also moving outside of the firewall and into the cloud. In light of these recent developments, enterprise leaders need to think about how their applications will talk to each other and devise effective strategies for cloud integration and ensuring connectivity between the cloud and enterprise.
Integration, of course, raises another set of questions. The following points are worth keeping in mind when considering cloud integration solutions:

• Security: remains a concern for cloud users and is complicated by the challenge of integration. A cloud integration solution must be capable of authenticating and authorizing access to resources, both in the cloud and on-premises. Moreover, it needs to be able to encrypt and store data (particularly in a multitenant environment) and comply with different regulations such as SSAE 16. With the growing number of SaaS applications, mobile apps and social media services that need to access enterprise data, there must be a secure means of connecting the cloud to the enterprise without compromising the firewall.
• Flexibility and Scalability: Point to point integration solutions can provide basic SaaS to SaaS connectivity, but they are not sophisticated or flexible enough to handle more complex scenarios. Cloud integration solutions must be able to support a variety of integration flows moving in both directions across the cloud and enterprise and scale up as the number of endpoints increases.
• Management: For enterprise users, SaaS applications offer convenience and ease of use while shifting the burden of maintenance and upgrades to the provider. The trade-off, however, is that users have much less visibility and control over their SaaS applications, especially when it comes to integration. Cloud integration solutions should include rich monitoring capabilities in order to provide the visibility and control over information flows and other performance attributes currently lacking in SaaS applications.
• Open Platform: Some SaaS vendors have started to offer out of the box connectors to address the integration challenges of deploying a cloud strategy. Unfortunately, as many system administrators who tackled integration challenges during the pre-cloud era are likely aware, using an integration solution from an application vendor limits the ability of enterprises to freely choose and manage the IT solutions that best fit their needs. Ideally, cloud integration solutions should be open platforms that allow enterprises to easily migrate on or off and seamlessly integrate their applications and data. 

In spite of the daunting challenges of cloud integration, new solutions are on the rise. Integration Platform as a Service (iPaaS) is a model of provisioning integration services as a standalone platform. iPaaS solutions can carry out a variety of integration patterns--not just point to point--and provide a secure means of accessing the enterprise. As a cloud-based solution, it also shares the flexibility and scalability of other cloud services. Perhaps most important of all, iPaaS serves as a central point of interaction for different applications and services across the cloud and enterprise. Although iPaaS is still in its early stages, it promises to meet, if not exceed, the challenge of cloud integration.

 

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For a successful DHCP address lease, what is the appropriate sequence of communication events that occurs between the client and server?

For a successful DHCP address lease, what is the appropriate sequence of communication events that occurs between the client and server?

• REQUEST, OFFER, INFORM, ACK
• INFORM, REQUEST, OFFER, ACK
• OFFER, NAK, DISCOVER, ACK
• DISCOVER, OFFER, REQUEST, ACK 

EXPLANATION

DHCP Dora process is handling by a SERVER called DHCP SERVER that dynamically distributes network configuration parameter, such as IP Addresses for interface or services. It is a Standardized network protocol used on INTERNET PROTOCOL in the network. About DHCP SERVER, it can be a ROUTER that SERVER enables computers to request IP Address and networking parameter automatically and no need manual configuration.

What is DHCP?

In any network, if a host wants to communicate with another host, then it must have a unique IP address for it. Whether it is a local area network or a wide area network. The work of DHCP is to assign an IP address to the hosts. DHCP is a client/server protocol. DHCP port number is 67 and 68. DHCP client work on port number 67 and DHCP server work on port number 68.
DHCP work as a client – Server Model, here SERVER handling the clients. DHCP employs a connectionless service model using UDP (User Datagram Protocol). Two UDP port used in DHCP process, 67 UDP port is the destination port of a server and 68 UDP port used by the client.
DHCP SERVER – DHCP SERVER working in same networking it means it provides IPs in the same network. DHCP SERVER automatically provides the IPs to clients. DHCP server manages a pool of IPs & information about client such parameter DEFAULT GATEWAY, DOMAIN NAME, SERVER NAME, & TIME SERVER.

How does DHCP Dora process work?

DHCP operation divides into 4 phases.

• Server Discovery
• IP Lease Offer
• IP Lease Request
• IP lease Acknowledgement

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In SharePoint Server, what permissions give you complete access to all CONTENT regardless of other permissions set on that content?

In SharePoint Server, what permissions give you complete access to all CONTENT regardless of other permissions set on that content?

• Site Owners
• Farm Administrators Group
• User Permissions on Web Application
• Site Collection Administrators 

EXPLANATION

SharePoint has a hierarchy for permissions. Starting at the top it goes: Farm->Web Application->Site Collection (known as just a 'Site')->Subsite (known as a 'Web')->Item.
The question asks which permission gives you access to the content without regard for lower permissions. The top permissions group, the Farm Administrators, do not automatically have access to content. The next level is the correct level. User Permissions on the Web Application can allow or deny Read or Full Control permissions to all content under that Web Application, even if that user has no rights or even deny rights at the site, web and item levels. These permissions are normally used to setup a search crawl account so that it is able to crawl through and index all of the content, but it can also be used to create a Web Application super user. The next permissions level, Site Collection Administrators, can also be granted access to content but they can have that access removed at a lower level.
For further reading on this please see https://support.office.com/en-us/article/Permissions-for-site-collection-administrators-f7f82b3e-7ef....

 

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Which of the following switch or router capabilities can help improve VoIP call quality on a LAN?

Which of the following switch or router capabilities can help improve VoIP call quality on a LAN?

• QoS policies that give preference to VoIP packets
• Pre-emptive packet drop to limit packet delay
• MPLS to speed general traffic handling
• DiffServ to give preference to VOIP packets 

EXPLANATION

While all of these approaches can produce faster throughput for VoIP packets, only QoS is widely enough implemented to make sense on a LAN. MPLS is primarily a WAN technology; DiffServ is not widely implemented, and pre-emptive packet drop techniques won't solve all VoIP delay issues, nor guarantee call quality (or even packet delivery).

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Which of the following allows voice communications over IP-based networks

Which of the following allows voice communications over IP-based networks

• NAS
• VoIP
• Router
• Modem 

EXPLANATION

If you've never heard of VoIP, get ready to change the way you think about long-distance phone calls. VoIP, or Voice over Internet Protocol, is a method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.
How is this useful? VoIP can turn a standard Internet connection into a way to place free phone calls. The practical upshot of this is that by using some of the free VoIP software that is available to make Internet phone calls, you're bypassing the phone company (and its charges) entirely.

VoIP is a revolutionary technology that has the potential to completely rework the world's phone systems. VoIP providers like Vonage have already been around for a while and are growing steadily. Major carriers like AT&T are already setting up VoIP calling plans in several markets around the United States, and the FCC is looking seriously at the potential ramifications of VoIP service.
Above all else, VoIP is basically a clever "reinvention of the wheel." In this article, we'll explore the principles behind VoIP, its applications and the potential of this emerging technology, which will more than likely one day replace the traditional phone system entirely.
The interesting thing about VoIP is that there is not just one way to place a call. There are three different "flavors" of VoIP service in common use today:

• ATA -- The simplest and most common way is through the use of a device called an ATA (analog telephone adaptor). The ATA allows you to connect a standard phone to your computer or your Internet connection for use with VoIP. The ATA is an analog-to-digital converter. It takes the analog signal from your traditional phone and converts it into digital data for transmission over the Internet. Providers like Vonage and AT&T CallVantage are bundling ATAs free with their service. You simply crack the ATA out of the box, plug the cable from your phone that would normally go in the wall socket into the ATA, and you're ready to make VoIP calls. Some ATAs may ship with additional software that is loaded onto the host computer to configure it; but in any case, it's a very straightforward setup.
• IP Phones -- These specialized phones look just like normal phones with a handset, cradle and buttons. But instead of having the standard RJ-11 phone connectors, IP phones have an RJ-45 Ethernet connector. IP phones connect directly to your router and have all the hardware and software necessary right onboard to handle the IP call. Wi-Fi phones allow subscribing callers to make VoIP calls from any Wi-Fi hot spot.
• Computer-to-computer -- This is certainly the easiest way to use VoIP. You don't even have to pay for long-distance calls. There are several companies offering free or very low-cost software that you can use for this type of VoIP. All you need is the software, a microphone, speakers, a sound card and an Internet connection, preferably a fast one like you would get through a cable or DSL modem. Except for your normal monthly ISP fee, there is usually no charge for computer-to-computer calls, no matter the distance.

If you're interested in trying VoIP, then you should check out some of the free VoIP software available on the Internet. You should be able to download and set it up in about three to five minutes. Get a friend to download the software, too, and you can start tinkering with VoIP to get a feel for how it works.

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