Networking

Question 1

Loopback address

Answer 1

127.0.0.1

Question 2

What does a loopback mean?

Answer 2

The data is routed back to the source

Question 3

A list of IP addresses to which data traffic can be forwarded and has been manually entered into either a router’s or computer’s routing table

Answer 3

Static Route

Question 4

This specifies where the data traffic is to be sent when the destination address for the data is not in the same LAN or is unknown

Answer 4

Default Gateway

Question 5

Which commands can be used to view the active routes for the host PC?

Answer 5

• Route print

- Netstat -r

Question 6

What is an IP route?

Answer 6

When static route info is entered from the router’s configure terminal prompt

Question 7

OSI Layer 1

Answer 7

Physical

Question 8

OSI Layer 2

Answer 8

Data Link

Question 9

OSI Layer 3

Answer 9

Network

Question 10

OSI Layer 4

Answer 10

Transport

Question 11

OSI Layer 5

Answer 11

Session

Question 12

OSI Layer 6

Answer 12

Presentation

Question 13

OSI Layer 7

Answer 13

Application

Question 14

Examples of Physical Layer (1)

Answer 14

Signals and media

ex: NICs ; twisted-pair cable; fiber optic cable

Question 15

Examples of Data Link Layer (2)

Answer 15

Provides for the flow of data

ex: MAC addresses

Question 16

Examples of Network Layer (3)

Answer 16

Provides routing decisions

ex: IP ; IPX

Question 17

Examples of Transport Layer (4)

Answer 17

Ensures error-free packets

ex: TCP ; UDP

Question 18

Examples of Session Layer (5)

Answer 18

Establishes, manages, and terminates

ex: NFS ; SQL sessions

Question 19

Examples of Presentation Layer (6)

Answer 19

Protocol conversion, data translation

ex: ASCII ; JPEG

Question 20

Examples of Application Layer (7)

Answer 20

Support for applications

ex: HTTP ; FTP ; SMTP (email)