Chapter 1: Internetworking

Question 1

What is an Internetwork?

Answer 1

When routers connect two or more networks together and use logical addressing (IP or IPv6).

Question 2

How do switches segment a network?

Answer 2

Switches create separate collision domains but a single broadcast domain.

Question 3

How do routers segment a network?

Answer 3

Routers provide a separate broadcast domain for each interface.

Question 4

What OSI layer provides a user interface?

Answer 4

The Application Layer

Question 5

Which OSI Layer presents data, and handles processing such as encryption?

Answer 5

The Presentation Layer

Question 6

Which OSI layer keeps different applications’ data separate?

Answer 6

The Session Layer

Question 7

Which OSI layer provides reliable or unreliable delivery. Performs error correction before retransmit?

Answer 7

The Transport Layer

Question 8

Which OSI Layer provides logical addressing which routers use for path determination?

Answer 8

The Network Layer

Question 9

Which OSI Layer combines packets into bytes and bytes into frames.
Provides access to media using MAC address. Performs error detection not correction?

Answer 9

The Data Link Layer

Question 10

Which OSI layer moves bits between devices. Specifies voltage, wire speed, and pin-out cables?

Answer 10

The Physical Layer

Question 11

Which OSI layer has File, print, message, database, and application services?

Answer 11

The Application Layer

Question 12

Data encryption, compression, and translation services is performed on which OSI layer?

Answer 12

The Presentation Layer

Question 13

Dialog control - simplex, half duplex, and full duplex is handled by which OSI Layer?

Answer 13

The Session Layer

Question 14

End-to-end connection, segments and reassembles data into a data stream by which OSI layer?

Answer 14

The Transport Layer

Question 15

Routing is the function of which OSI layer?

Answer 15

The Network Layer

Question 16

Framing is the function of which OSI layer?

Answer 16

The Data Link Layer

Question 17

Physical topology is the function of which OSI layer?

Answer 17

The Physical Layer

Question 18

Which OSI Layer establishes sessions and tears down virtual circuits?

Answer 18

The Transport Layer

Question 19

Which OSI Layer maintains Flow control?

Answer 19

The Transport Layer

Question 20

What are the characteristics of connection oriented service?

Answer 20

A virtual circuit
Sequencing
Acknowledgements
Flow control

Question 21

What are the three types of flow control?

Answer 21

Buffering, windowing, and congestion avoidance

Question 22

What is a routed protocol?

Answer 22

Protocols used to support data traffic. i.e IP and IPv6

Question 23

What are routing protocols?

Answer 23

Protocols that send update packets. i.e RIP, RIPv2, EIGRP, and OSPF

Question 24

Will routers forward broadcast or multicast packets?

Answer 24

No

Question 25

Can routers provide Layer 2 bridging functions?

Answer 25

Yes

Question 26

Can routers simultaneously route through the same interface?

Answer 26

Yes

Question 27

Do Layer 3 devices provide connections between virtual LANS?

Answer 27

Yes

Question 28

Can routers provide quality of service (QOS) for specific types of network traffic?

Answer 28

Yes

Question 29

Which OSI layer provides the physical transmission of data and handles error notification, network topology, and flow control?

Answer 29

The Data Link Layer

Question 30

Is Layer 2 switching considered hardware based?

Answer 30

Yes

Question 31

Which layer machine uses filter tables?

Answer 31

Layer 2 (switches and bridges)

Question 32

Hubs are at what Layer?

Answer 32

Layer 1

Question 33

Switches and bridges are at what Layer?

Answer 33

Layer 2

Question 34

Routers are at what Layer?

Answer 34

Layer 3