Question 1

List and describe five managerial factors to consider when selecting best practices for a backbone network design.

Accepted Answer

1. Scalability: When selecting best practices for a backbone network design, it is important to consider the scalability of the design. The network should be able to accommodate future growth and expansion without requiring a complete overhaul of the infrastructure.

2. Reliability: The backbone network is the core of the entire network infrastructure, so it is crucial that it is highly reliable. Best practices should include redundant components, failover mechanisms, and proactive monitoring to ensure maximum uptime and minimal downtime.

3. Security: Security is a top priority for any network design, and the backbone network is no exception. Best practices should include robust security measures such as firewalls, intrusion detection systems, and encryption to protect sensitive data and prevent unauthorized access.

4. Performance: The backbone network should be designed to deliver high performance and low latency. Best practices should include optimizing the network for efficient data transfer, minimizing packet loss, and prioritizing critical traffic to ensure smooth operation.

5. Manageability: A well-designed backbone network should be easy to manage and maintain. Best practices should include centralized management tools, automation, and documentation to streamline network operations and troubleshooting.

Considering these managerial factors when selecting best practices for a backbone network design will help ensure a robust, reliable, and secure infrastructure that can support the organization's current and future needs.

Question 2

One advantage of a router is that it can choose the "best" route between networks when there is a choice.

Accepted Answer

A) True 
 B)False  True

Question 3

Switched backbone networks:

Accepted Answer

A)  always use a ring topology 
B)  are the least common type of BN used in one building 
C)  use a star topology with one device, usually a switch 
D)  have a great deal of cable in their backbones 
E)  tend to have less cable, but more network devices 
A)  always use a ring topology 
B)  are the least common type of BN used in one building 
C)  use a star topology with one device, usually a switch 
D)  have a great deal of cable in their backbones 
E)  tend to have less cable, but more network devices C

Question 4

A routed backbone tends to be used more for large networks than VLANs,although VLAN high speed switches and this new type of LAN-BN architecture are now being considered.

Accepted Answer

A) True 
 B)False

Question 5

The primary advantage of a routed backbone is that it clearly segments each part of the network connected to the backbone because each segment has its own subnet addresses that can be managed separately.

Accepted Answer

A) True 
 B)False

Question 6

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

Accepted Answer

A) True 
 B)False

Question 7

Routers:

Accepted Answer

A)  operate at the application layer 
B)  operate only at the physical layer 
C)  cannot connect two or more networks that use the same type of cable 
D)  may also be called TCP/IP gateways 
E)  operate only at the data link layer 
A)  operate at the application layer 
B)  operate only at the physical layer 
C)  cannot connect two or more networks that use the same type of cable 
D)  may also be called TCP/IP gateways 
E)  operate only at the data link layer

Question 8

Which of the following is not a technology layer that is considered when designing backbone networks?

Accepted Answer

A)  access layer 
B)  distribution layer 
C)  decentralized layer 
D)  core layer 
E)  none of the above 
A)  access layer 
B)  distribution layer 
C)  decentralized layer 
D)  core layer 
E)  none of the above

Question 9

Even though the access layer isn't part of the backbone,why is it important to the backbone?

Accepted Answer

The access layer, while not a part of th

Question 10

Routers operate at the application layer.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is true regarding switched backbones?

Accepted Answer

A)  They place all network devices for one part of the building physically in the same room, often in a rack of equipment 
B)  They have an advantage of requiring less cable 
C)  They make it more difficult to move computers from one LAN to another 
D)  Network capacity is always tied to the physical location of the computers 
E)  They are harder to maintain and upgrade than a BN that is not rack-based 
A)  They place all network devices for one part of the building physically in the same room, often in a rack of equipment 
B)  They have an advantage of requiring less cable 
C)  They make it more difficult to move computers from one LAN to another 
D)  Network capacity is always tied to the physical location of the computers 
E)  They are harder to maintain and upgrade than a BN that is not rack-based

Question 12

Which of the following is not a type of hardware device that can be used to interconnect networks?

Accepted Answer

A)  switches 
B)  routers 
C)  dumb terminals 
D)  gateways 
E)  all of the above can be used 
A)  switches 
B)  routers 
C)  dumb terminals 
D)  gateways 
E)  all of the above can be used

Question 13

Network demand will not be reduced by:

Accepted Answer

A)  restricting (or moving) applications such as desktop videoconferencing 
B)  using network devices to ensure that broadcast messages do not go to other networks 
C)  encouraging the use of applications such as medical imaging 
D)  sending status information to all computers on all LANs in the backbone network 
E)  restricting (or moving) applications such as multimedia 
A)  restricting (or moving) applications such as desktop videoconferencing 
B)  using network devices to ensure that broadcast messages do not go to other networks 
C)  encouraging the use of applications such as medical imaging 
D)  sending status information to all computers on all LANs in the backbone network 
E)  restricting (or moving) applications such as multimedia

Question 14

Which of the following is not true about backbone networks?

Accepted Answer

A)  They may also be called enterprise networks if they connect all networks within an organization. 
B)  They typically connect many networks, including LANs. 
C)  They typically provide connections to other BNs, WANs, MANs, and the Internet. 
D)  They may also be called campus networks if they connect many BNs spanning several buildings as a single location. 
E)  They tend to use lower speed circuits than LANs. 
A)  They may also be called enterprise networks if they connect all networks within an organization. 
B)  They typically connect many networks, including LANs. 
C)  They typically provide connections to other BNs, WANs, MANs, and the Internet. 
D)  They may also be called campus networks if they connect many BNs spanning several buildings as a single location. 
E)  They tend to use lower speed circuits than LANs.

Question 15

Routed backbones use switches that move packets based on data link layer addresses.

Accepted Answer

A) True 
 B)False

Question 16

__________ refers to the way in which backbone interconnects the network attached to it and how it manages the way in which packets from one network move though the backbone to other networks.

Accepted Answer

A)  Traffic architecture 
B)  Network design 
C)  Backbone architecture 
D)  Distribution lay 
E)  Core layer 
A)  Traffic architecture 
B)  Network design 
C)  Backbone architecture 
D)  Distribution lay 
E)  Core layer

Question 17

Which of the following is not true about Layer-3 switches?

Accepted Answer

A)  They switch messages based on their IP address. 
B)  They can be used in place of routers. 
C)  They function faster than routers. 
D)  They have more simultaneously active ports than routers. 
E)  They can only switch messages based on their data link layer addresses. 
A)  They switch messages based on their IP address. 
B)  They can be used in place of routers. 
C)  They function faster than routers. 
D)  They have more simultaneously active ports than routers. 
E)  They can only switch messages based on their data link layer addresses.

Question 18

The _________ is the part of the backbone that connects the different backbones together.

Accepted Answer

A)  Access layer 
B)  Distribution layer 
C)  Core layer 
D)  Privacy layer 
E)  Switched layer 
A)  Access layer 
B)  Distribution layer 
C)  Core layer 
D)  Privacy layer 
E)  Switched layer

Question 19

A __________ type of BN has a star topology with one device,such as a switch,at its center.

Accepted Answer

A)  Bridged backbone 
B)  Virtual LAN 
C)  Hubbed backbone 
D)  Switched backbone 
E)  Routed backbone 
A)  Bridged backbone 
B)  Virtual LAN 
C)  Hubbed backbone 
D)  Switched backbone 
E)  Routed backbone

Question 20

Which of the following devices is the most complex?

Accepted Answer

A)  Gateway 
B)  Router 
C)  Layer 3 switches 
D)  Switch 
E)  Hub 
A)  Gateway 
B)  Router 
C)  Layer 3 switches 
D)  Switch 
E)  Hub

List and describe five managerial factors to consider when selecting best practices for a backbone network design.

One advantage of a router is that it can choose the "best" route between networks when there is a choice.

Switched backbone networks:

A routed backbone tends to be used more for large networks than VLANs,although VLAN high speed switches and this new type of LAN-BN architecture are now being considered.

The primary advantage of a routed backbone is that it clearly segments each part of the network connected to the backbone because each segment has its own subnet addresses that can be managed separately.

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

Routers:

Which of the following is not a technology layer that is considered when designing backbone networks?

Even though the access layer isn't part of the backbone,why is it important to the backbone?

Routers operate at the application layer.

Which of the following is true regarding switched backbones?

Which of the following is not a type of hardware device that can be used to interconnect networks?

Network demand will not be reduced by:

Which of the following is not true about backbone networks?

Routed backbones use switches that move packets based on data link layer addresses.

__________ refers to the way in which backbone interconnects the network attached to it and how it manages the way in which packets from one network move though the backbone to other networks.

Which of the following is not true about Layer-3 switches?

The _________ is the part of the backbone that connects the different backbones together.

A __________ type of BN has a star topology with one device,such as a switch,at its center.

Which of the following devices is the most complex?

Introduction to Data Communications

Application Layer

Physical Layer

Data Link Layer

Network and Transport Layers

Wired and Wireless LANs

Wide Area Networks

The Internet

Network Security

Network Design

Network Management

Filters

Exam 7: Backbone Networks

List and describe five managerial factors to consider when selecting best practices for a backbone network design.

One advantage of a router is that it can choose the "best" route between networks when there is a choice.

Switched backbone networks:

A routed backbone tends to be used more for large networks than VLANs,although VLAN high speed switches and this new type of LAN-BN architecture are now being considered.

The primary advantage of a routed backbone is that it clearly segments each part of the network connected to the backbone because each segment has its own subnet addresses that can be managed separately.

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

Routers:

Which of the following is not a technology layer that is considered when designing backbone networks?

Even though the access layer isn't part of the backbone,why is it important to the backbone?

Routers operate at the application layer.

Which of the following is true regarding switched backbones?

Which of the following is not a type of hardware device that can be used to interconnect networks?

Network demand will not be reduced by:

Which of the following is not true about backbone networks?

Routed backbones use switches that move packets based on data link layer addresses.

__________ refers to the way in which backbone interconnects the network attached to it and how it manages the way in which packets from one network move though the backbone to other networks.

Which of the following is not true about Layer-3 switches?

The _________ is the part of the backbone that connects the different backbones together.

A __________ type of BN has a star topology with one device,such as a switch,at its center.

Which of the following devices is the most complex?

Introduction to Data Communications

Application Layer

Physical Layer

Data Link Layer

Network and Transport Layers

Wired and Wireless LANs

Wide Area Networks

The Internet

Network Security

Network Design

Network Management

Filters