Question 1

Circuit capacity on a backbone network will not be improved by:
A)going from 100Base-T Ethernet to 10Base-T Ethernet
B)going from 100Base-T Ethernet to gigabit Ethernet
C)adding additional circuits alongside heavily used ones
D)replacing a shared circuit backbone with a switched circuit backbone
E)providing a faster circuit to the server

Accepted Answer

Going from 100Base-T Ethernet to 10Base-T Ethernet will decrease the circuit capacity, not improve it.

Question 2

Devices in a rack are connected together using ___________.
A)patch cables
B)string
C)servers
D)modules
E)chassis switches

Accepted Answer

Devices in a rack are typically connected together using patch cables, which allow for easy configuration and networking between devices. String, servers, modules, and chassis switches are not typically used for this purpose.

Question 3

Which of the following is true regarding switched backbones?
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

Accepted Answer

Switched backbones often consolidate network devices into a central location, such as a room or rack, to simplify management and improve performance.

Question 4

Which of the following is not true about multi-switch VLANs?
A)Several switches are used to build a VLAN
B)The switches in the VLAN can send packets among themselves in a way that identifies the VLAN to which the frame belongs.
C)In some multi-switch VLANs, the Ethernet frame is modified based on the emerging IEEE 802.1q standard.
D)In some multi-switch VLANs, a new VLAN packet encapsulates the Ethernet packet.
E)VLAN configurations are limited to spanning over no more than two switches.

Accepted Answer

This statement is not true as multi-switch VLANs can span over more than two switches.

Question 5

A _____________ type of BN is a new type of LAN/BN architecture made possible by intelligent, high speed switches that assign computers to LAN segments via software, rather than by hardware.
A)Bridged backbone
B)Virtual LAN
C)Hubbed backbone
D)Collapsed backbone
E)Routed backbone

Accepted Answer

A virtual LAN (VLAN) is a type of BN architecture enabled by smart switches that assign computers to LAN segments through software rather than hardware. VLANs allow the logical segmentation of physical LANs, creating broadcast domains that isolate traffic and improve network performance and security.

Question 6

Which of the following would not be part of an "ideal" backbone design?
A)access layer composed of 10/100 layer 2 Ethernet switches
B)distribution layer composed of layer 3 Ethernet switches of 100 or 1000) Base-T
C)redundant switches
D)core layer composed of layer 3 Ethernet switches running 10 or 40) GbE over fiber
E)coax cabling throughout LANs and BN

Accepted Answer

Coax cabling is not typically used in modern network designs and would not be an ideal choice for a backbone. An ideal backbone design would include a core layer of high-speed Ethernet switches over fiber, redundant switches for redundancy, and a distribution layer of layer 3 switches. The access layer switches could be either 10/100 or 100/1000 Base-T depending on the needs of the network.

Question 7

The _______ is the part of the backbone that connects the LANs together.
A)Access layer
B)Distribution layer
C)Core layer
D)Privacy layer
E)Switched layer

Accepted Answer

The answer of The _______ is the part of the...

Question 8

With a switched backbone network, the equipment is usually placed in a ______.
A)server
B)NIC
C)cabinet
D)basement
E)rack

Accepted Answer

Switched backbone networks typically involve multiple switches, routers, and other network equipment that need to be organized and connected. Racks are commonly used to hold and arrange these devices in a compact and structured way. Cabinets may also be used but are less common and are generally more enclosed than racks. Servers and NICs are important components of a network but are not necessarily specifically used for organizing and connecting network equipment in a switched backbone network. The basement is not a typical location for network equipment as it may pose environmental hazards such as moisture and dust.

Question 9

The _________ is the part of the backbone that connects the different backbones together.
A)Access layer
B)Distribution layer
C)Core layer
D)Privacy layer
E)Switched layer

Accepted Answer

The Core layer is responsible for connecting different backbones together, acting as the central part of a network's architecture that facilitates fast and reliable communication between various segments of the network.

Question 10

Computers can be assigned to a VLAN based on the ________.
A)IEEE 802.1q standard
B)NIC interface
C)physical port on the switch
D)IEEE 802.3 standard
E)physical location of the computer

Accepted Answer

Computers can be assigned to a VLAN based on the physical port on the switch, which is where the computer is connected. This allows for easy management and control of network traffic within a specific VLAN. While the other options listed may be relevant in other contexts, they are not direct determinants of VLAN assignment.

Question 11

Most backbone devices are store-and-forward devices.One simple way to improve performance is to ensure that they have ________________.
A)enough ports
B)sufficient memory
C)twisted pair connections
D)large wheels
E)IEEE 802.11

Accepted Answer

Sufficient memory is needed to store and forward the data packets efficiently. If the backbone devices do not have enough memory, they may experience congestion and delays, leading to poor performance. Adding more memory to the devices can improve their performance. The other choices are not relevant to improving the performance of store-and-forward backbone devices.

Question 12

The biggest drawbacks to VLANs are their_________________.
A)cost and management complexity
B)size and contention
C)contention and cost
D)learning curve and contention
E)speed and size

Accepted Answer

VLANs can be costly to implement and they require skilled network administrators to configure and manage them effectively. Additionally, since multiple network devices share the same physical network infrastructure, VLANs can increase the complexity of network management. While contention can also be a drawback, it is not as significant as the cost and management complexity. The other options (B, D, and E) are either incorrect or not as significant as the cost and management complexity.

Question 13

The backbone architecture layer that is closest to the users is the
A)Access layer
B)Distribution layer
C)Core layer
D)Privacy layer
E)Switched layer

Accepted Answer

The Access layer is the layer closest to the users or end devices. It provides connectivity for end devices such as computers, printers, and IP phones. Therefore, A)Access layer is the correct option.

Question 14

Associated with a switched backbone, MDF is an acronym for:
A)multi-station device foundation
B)main distribution facility
C)manual data frequency
D)multiplexer downstream flow
E)maximum data facility

Accepted Answer

MDF stands for Main Distribution Facility and is a central hub for distributing network connectivity to multiple locations in a building or campus. It is commonly associated with a switched backbone network. None of the other options are correct.

Question 15

VLANs prioritize traffic based on the ______.
A)IEEE 802.1q standard
B)IEEE 802.11 standard
C)VLAN size
D)multiswitch allocation
E)switch dynamics

Accepted Answer

VLANs prioritize traffic based on the IEEE 802.1q standard, which is a protocol that defines how VLAN tagging is done in Ethernet networks. This protocol allows for the identification of traffic from different VLANs, which can then be prioritized accordingly. The other options listed do not directly relate to VLAN traffic prioritization.

Question 16

Network demand will not be reduced by:
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

Accepted Answer

Encouraging the use of applications such as medical imaging would likely increase network demand due to the high data requirements of such applications, rather than reduce it.

Question 17

As security becomes more important, most routers now have software that enables the network manager to create an) _______ that specifies what traffic the router should allow through and what traffic the router should block.
A)module
B)access control list
C)MDF
D)VLAN ID
E)VLAN tag

Accepted Answer

An access control list (ACL) is a type of security policy that allows the network manager to specify what traffic should be allowed through the router and what traffic should be blocked. This is a common feature in modern routers and helps to enhance network security.

Question 18

Using ______ capabilities, network managers can connect VOIP phones directly into a VLAN switch and configure the switch to reserve sufficient network capacity so that they will always be able to send and receive voice messages.
A) backbone
B) switched
C) routed
D)QoS
E)access

Accepted Answer

QoS (Quality of Service) capabilities can prioritize traffic, such as voice traffic for VOIP phones, to ensure it has the necessary bandwidth and priority over other traffic. This allows network managers to configure switches to reserve sufficient network capacity for VOIP phones to ensure clear voice communication.

Question 19

Which of the following would be least effective in improving backbone performance?
A)upgrading memory for devices in the network
B)changing the demand placed on the network
C)adding new keyboards to the client computers
D)upgrading the circuits between devices
E)improving devices in the network

Accepted Answer

Adding new keyboards to the client computers would have no impact on backbone performance as keyboards do not directly affect network traffic or bandwidth. The other options would all have some potential to improve backbone performance. Upgrading memory and improving devices in the network could increase their processing power and speed, upgrading circuits would increase bandwidth, and changing demand could help balance network usage.

Question 20

Device performance on a backbone network will not be improved by:
A)using the same protocols in the backbone and the LANs
B)using static routing in low to moderate traffic conditions
C)ensuring that backbone devices have sufficient memory so that packets do not have to be retransmitted by the sender
D)translating packets from one protocol to another as they enter the BN
E)none of the options

Accepted Answer

Translating packets from one protocol to another as they enter the backbone network can cause delays and reduce performance. Therefore, it will not improve device performance on the backbone network. The other options can improve device performance on the backbone network.

Quiz 8: Backbone Networks

Circuit capacity on a backbone network will not be improved by:

Devices in a rack are connected together using ___________.

Which of the following is true regarding switched backbones?

Which of the following is not true about multi-switch VLANs?

A _____________ type of BN is a new type of LAN/BN architecture made possible by intelligent, high speed switches that assign computers to LAN segments via software, rather than by hardware.

Which of the following would not be part of an "ideal" backbone design?

The _______ is the part of the backbone that connects the LANs together.

With a switched backbone network, the equipment is usually placed in a ______.

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

Computers can be assigned to a VLAN based on the ________.

Most backbone devices are store-and-forward devices.One simple way to improve performance is to ensure that they have ________________.

The biggest drawbacks to VLANs are their_________________.

The backbone architecture layer that is closest to the users is the

Associated with a switched backbone, MDF is an acronym for:

VLANs prioritize traffic based on the ______.

Network demand will not be reduced by:

As security becomes more important, most routers now have software that enables the network manager to create an) _______ that specifies what traffic the router should allow through and what traffic the router should block.

Using ______ capabilities, network managers can connect VOIP phones directly into a VLAN switch and configure the switch to reserve sufficient network capacity so that they will always be able to send and receive voice messages.

Which of the following would be least effective in improving backbone performance?

Device performance on a backbone network will not be improved by: