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When you're studying for the Network+ exam, you've got to master the fundamentals of networking, because th

According to USFDA, a combination product is one composed of any combination of a drug and device; biological product and device; drug and biological product

e Network+ is a hard exam to pass due to the range of information covered. One such fundamental is the Add

; or drug, device, and biological product and fixed dose combination would include two or more combinations of drug.

Examples of combination products may in

ress Resolution Protocol, commonly referred to as ARP.

ARP operates at the Data Link layer of the OSI mode

lude drug-coated devices, drugs packaged with delivery devices in medical kits, and drugs and devices packaged separately but intended to be used together.

l, and its purpose is often overlooked. When Host A wants to send data to Host B, we know Host A must have

here is enormous increase in the number of combination products entering the market in the recent years. Combination products have proven advantages but fixe

a destination IP address for Host B (the Network layer address). What we tend to overlook is that Host A

d dose combinations are still in the process of convincing regulatory authority on their advantages over the single ingredient formulations.

Combination pro

must also have a Layer 2 destination address for Host B -- in other words, it's got to have a destination M

ucts have become life saving products for the pharmaceutical companies who doesn’t have many innovative molecules in their product pipeline and have been inc

AC address for Host B. That's where ARP comes in.

Host devices, as well as switches and routers, keep a t

easingly used in the product life cycle management. Even the companies having product patents are trying to extend their product life cycle through the combi

able that maps IP addresses to MAC addresses. This is an ARP Cache, and in our scenario Host A would first

nation products and maximize the revenues. But the companies involved in this practice are overlooking that they are burdening the patients both economically

look in its own ARP Cache to see if it has a corresponding MAC address for Host B. If not, Host A will sen

and physically. They need to rightly judge the benefits of the combination products and they have to even look at the risks involved when combining the produ

d out an ARP Request. This request is a broadcast, which means that every single device on the network segm

ts. Some of the combination products were well accepted by physicians while others suffered. Companies involved in development of combination products are fi

ent will get it. (The broadcast MAC address is ff-ff-ff-ff-ff-ff.)

The ARP Request contains the IP addres

ding difficulty in defining their combination products and facing various challenges from selecting a combination to marketing it.

Following aspects would a

s of the destination host, in this case Host B. The Request is basically saying, "Here's the IP address of

dd to the challenges in developing combination products:

Which markets to tap where the combination products can do fairly well?
Which combination prod

the host I need to talk to. Will the device with this IP address send me its MAC address?"

Every host on

cts are meaningful and rational?
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin

the segment will receive the Request, but only the device with the IP address contained in the Request will

tions increase the patient compliance?
What would be the developing cost?
How to tackle the risks encountered during combination product developmen

respond to it. In this example, Host B will send a unicast ARP Response to Host A, telling Host A what it

t?

As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel

s MAC address is. Host A now has the IP and MAC address for Host B, and can now send data successfully to

ping new procedures for reviewing their safety, efficacy and quality.

Professional from academic institutions, pharmaceutical industries, health care indust

Host B.

Since the ARP Request is a broadcast, there is no problem if there is a hub, repeater, or switch

y and representatives from various regulatory agencies are working out to design the regulatory requirements for manufacture and sale of combination products

physically between Host A and Host B, since those devices forward broadcasts. Routers do NOT forward broad

.

As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de

casts, however, so if there is a router between Host A and Host B, there could be a problem. There is an A

elopment. They need to be wiser in analyzing the market trends and the regulatory requirements.

Companies that provide selfless information through particip

RP feature that addresses this problem, though, and we'll talk about that in my next Network+ exam tutorial

tion in industry events and feedback to regulatory authorities would be able to face the challenges and will be successful in developing combination products

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