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Q:

Which layer ensures the trustworthly transmission of data across a physical link and is primarily concerned with physical addressing, line discipline, network topology, error notification, ordered delivery of frames, and flow control?

Answer

PDUs at the data link layer are called frames and provide physical addressing, plus other options to place packets on the network medium.

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Subject: CCNA

Q:

Study of inter relationship between living organism and their environment is called _______

A) Plant Geography	B) Plant social science
C) Ecology	D) Ecosystem

Answer & Explanation Answer: C) Ecology

Explanation:

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Filed Under: Biology

Q:

Vivipary is defined as germination

A) during storage	B) within the fruit
C) with cotyledons coming out of soil	D) with cotyledons remaining inside the soil

Answer & Explanation Answer: B) within the fruit

Explanation:

Vivipary means germination even when attached to the mother plant. Usually the saline marsh plants (Halophytes) have their seeds growing even when they are inside the fruits attached to the tree.

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Filed Under: Biology

Q:

Select from the five alternative diagrams, the one that best illustrates the relationship among the three classes : Truck, Ship, Goods

A) 1	B) 3
C) 4	D) 5

Answer & Explanation Answer: B) 3

Explanation:

Truck and Ship are entirely different. But some Goods are carried by some Trucks and some Goods are carried by some Ships.

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Filed Under: Logical Venn Diagram

Q:

Select from four alternative diagrams, the one that best illustrates the relationship among the three classes : Pigeons, Birds, Dogs

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: A) 1

Explanation:

All Pigeons are Birds. But,Dogs are entairly different.

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Filed Under: Logical Venn Diagram

Q:

Which of the following Venn- diagram correctly illustrates the relation ship among the classes : Tennis fans, Cricket players, Students

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: A) 1

Explanation:

Some Students can be Cricket players. Some Cricket players can be Tennis fans. Some Students can be Tennis fans. So, the given items are partly related to each other.