Ch7 (1) Flashcards
. Many organizations today are installing traditional wired Ethernet for desktop users
and install Wi-Fi as ______________.
a. overlay networks
b. Bluetooth
c. cellular networks
d. mobile networks
e. Ethernet networks
A
How have LAN technologies evolved in recent years?
a) Decrease in data rates
b) Increase in costs
c) Introduction of gigabit Ethernet and high-speed wireless Ethernet
d) Reduction in understanding of LAN design best practices
C
Why is Wi-Fi considered cheaper than wired Ethernet?
a) Lower equipment costs
b) Higher data rates
c) Reduced installation costs
d) Enhanced security features
C
What is a key consideration regarding the relationship between Wi-Fi and wired Ethernet?
a) Wi-Fi has lower data rates than wired Ethernet
b) Wired Ethernet uses APs to distribute network capacity
c) Wi-Fi shares its capacity among users on the same AP
d) Wired Ethernet is considerably cheaper than Wi-Fi
C
How do most organizations typically deploy wired Ethernet and Wi-Fi networks?
a) Wi-Fi as the primary LAN and wired Ethernet as overlay networks
b) Using Wi-Fi for desktop users and wired Ethernet for laptops and mobile devices
c) Installing wired Ethernet for desktop users and using Wi-Fi as overlay networks
d) Implementing both wired Ethernet and Wi-Fi separately for different user groups
C
What approach have some organizations started experimenting with regarding Wi-Fi?
a) Installing Wi-Fi only for desktop users
b) Moving all users off the wired networks onto Wi-Fi as their primary network
c) Using Wi-Fi as a backup network in case of wired Ethernet failure
d) Removing Wi-Fi entirely from their network infrastructure
B
According to the text, what is considered the current best practice for LAN design?
a) Using Wi-Fi as the primary LAN
b) Implementing wired Ethernet and Wi-Fi as separate networks
c) Utilizing wired Ethernet for the primary LAN and Wi-Fi as an overlay network
d) Relying solely on wired Ethernet for all network access
C
Wireless LANs are never connected to a wired network
F
What type of wiring is commonly used for wired LANs in many organizations today?
a) Category 3 wiring
b) Category 5e wiring
c) Fiber optic wiring
d) Coaxial wiring
B. Switched 100Base T or 1000Base-T utilized cat5e(from cat 5)
What is a characteristic of Category 5e wiring used for LAN installations?
a) It is expensive and slow.
b) It requires frequent maintenance.
c) It supports high-speed data transmission.
d) It is suitable only for small networks.
C. and cheap
What was a common practice in the early days of LAN installations regarding network cable placement?
a) Meticulous documentation of cable placement
b) Strategic planning for long-term expansion
c) Installation of cables wherever convenient with little long-term planning
d) Deployment of cables based on precise user requirements
C
Why is it critical to plan for effective LAN cabling in today’s context?
a) Due to the decreasing demand for LAN usage
b) To ensure easier cable reinstallation in the future
c) To prevent network downtime
d) Because of the increased reliance on LANs and the cost associated with cable installation
D
When is the cheapest point to install network cable in a building?
a) After the building construction is complete
b) During the renovation of the building
c) During the construction of the building
d) When the building is fully occupied
C
What factor contributes significantly to the expense of cable installation according to the text?
a) The cost of network hubs and switches
b) The complexity of LAN configuration
c) The cost of paying installers and additional construction
d) The need for frequent cable maintenance
C
What approach do most buildings under construction today take regarding LAN cabling?
a) They have no separate LAN cable plan.
b) They rely on wireless networks instead of wired LANs.
c) They include LAN cable plans similar to electrical cable plans.
d) They install LAN cables only in selected rooms.
C
Where are data wiring closets typically located in a building?
a) In each individual room
b) On each floor
c) In the basement
d) In the building’s lobby
B
What equipment is typically found in a data wiring closet?
a) Desktop computers
b) Network hubs or switches
c) Printers
d) Servers
B
What is the purpose of running cables from each room on a floor to the wiring closet?
a) To connect all computers within a room
b) To provide access to LAN resources
c) To minimize cable costs
d) To facilitate wireless network connections
B
When designing user access with wireless Ethernet, what is recommended in terms of the wireless standard, considering the year 2021?
a) 802.11ac
b) 802.11b
c) 802.11ax
d) 802.11g
B
What is the primary goal of avoiding signal overlap when placing Access Points (APs) in a wireless network?
a) To increase interference and network congestion
b) To ensure seamless roaming for users
c) To improve network security
d) To optimize performance and reduce interference between APs
D
A site survey is not an important component of a WLAN design
F
Why is designing the physical layout of a WLAN (Wireless Local Area Network) more challenging than designing a wired LAN?
a) Due to higher costs associated with WLAN equipment
b) Because of the need for specialized training in wireless technologies
c) Because of interference issues
d) Because WLANs require more frequent maintenance
C
What method is suggested for evaluating the placement of Access Points (APs) in WLAN design?
a) Using a simulation software
b) Conducting a survey among users
c) Employing a temporary AP and laptop
d) Consulting with network administrators
C
What role does a temporary AP play in WLAN design?
a) Providing permanent network access
b) Evaluating the placement of permanent APs
c) Acting as a backup in case of AP failure
d) Generating network traffic data
B
How are locations chosen for AP placement in WLAN design?
a) Based on random selection
b) To maximize interference
c) To provide coverage and minimize potential interference
d) Without considering coverage or interference
C
Which of the following is not determined by a site survey?
a. feasibility of the desired coverage
b. potential sources of interference
c. the security of the WLAN
d. estimated number of access points needed to provide coverage
e. current locations of the wired network into which the WLAN will connect.
C
What is the initial step in designing WLAN coverage?
a) Deploying permanent APs throughout the site
b) Conducting a site survey
c) Estimating signal strength based on theoretical ranges
d) Installing temporary APs randomly
B
Which type of construction material typically causes less interference in WLAN signal strength?
a) Concrete block
b) Drywall
c) Metal
d) Brick
B
How do the number and type of walls affect WLAN coverage?
a) They have no impact on coverage.
b) They decrease potential interference sources.
c) They influence signal strength, with thicker walls causing more interference.
d) They improve signal propagation.
C
What does WLAN performance diminish with, according to the provided information?
a) Increased signal strength
b) Decreased interference
c) More walls between APs and wireless devices
d) Clear line of sight between APs and wireless devices
C
What is the coverage area shape of an Access Point (AP) with an omnidirectional antenna?
a) Square
b) Rectangle
c) Circle
d) Triangle
C
In typical office environments, at what distance from the AP do real-world tests show a dramatic slowdown in Wi-Fi data rates?
a) 25 feet
b) 50 feet
c) 75 feet
d) 100 fee
B
Why do many wireless designers use a radius of 50 feet when planning traditional office environments?
a) To maximize coverage area
b) To minimize interference
c) To ensure high-quality coverage
d) To reduce costs
C
How do wireless designers often simplify planning wireless LANs in square-shaped buildings?
a) By using triangular coverage areas
b) By designing using circles
c) By designing using squares
d) By utilizing rectangles
C
What approximate size square is equivalent to a 50-foot radius coverage area for an AP?
a) 40 feet
b) 60 feet
c) 70 feet
d) 80 feet
C
How do advancements in wireless LAN technology affect the effective range of APs?
a) They increase the range of APs
b) They decrease the range of APs
c) They have no effect on the range of APs
d) They fluctuate the range of APs unpredictably
B
How can interference between Access Points (APs) in a building be prevented?
a) By setting each AP to transmit on the same channel
b) By setting each AP to transmit on different channels
c) By turning off all APs except one
d) By increasing the transmit power of all APs
B
What challenge is associated with managing WLANs regarding the number of users on each AP?
a) Ensuring all users connect to the same AP
b) Balancing the number of users on each AP
c) Maximizing congestion on all APs
d) Allowing only a few users on each AP
B
What is the consequence of devices typically connecting to the AP with the strongest signal?
a) It reduces network congestion on all APs.
b) It ensures optimal network performance on all APs.
c) It potentially causes congestion on some APs while others remain underutilized.
d) It prevents users from connecting to any AP.
C
How do standard APs behave in terms of communication with each other?
a) They communicate with each other constantly to optimize network performance.
b) They only respond to devices that request access to them.
c) They autonomously select channels to avoid interference.
d) They transmit signals indiscriminately, causing interference.
B
What is an essential consideration in multi-story WLAN design to minimize interference from APs on different floors?
a) Horizontal mapping only
b) Vertical mapping only
c) Both horizontal and vertical mapping
d) Interference is not a concern in multi-story WLAN design
C
What potential complication arises from thicker floors in multi-story WLAN design?
a) Reduced interference between APs
b) Simplified design process
c) Impeded vertical signal propagation
d) Increased signal strength
C
_______ are wired into a Wi-Fi Controller. They report what devices are attached to
them and how busy they are to the controller, which balances traffic across the APs it
manages.
a. Managed APs
b. Managed routers
c. SAN
d. Managed Wi-Fi hub
e. Wireless router
A
What action does the Wi-Fi Controller take if a laptop connects to a very busy AP?
a) It increases the signal strength of the busy AP.
b) It instructs the laptop to disconnect from the network.
c) It denies access to the laptop on the busy AP.
d) It decreases the traffic load on other APs.
C
What happens when a laptop is denied access to a busy AP by the Wi-Fi Controller?
a) The laptop continues to attempt to connect to the busy AP repeatedly.
b) The Wi-Fi Controller disconnects the laptop from the network entirely.
c) The laptop automatically connects to the next available AP.
d) The Wi-Fi Controller assigns the laptop to a less busy AP.
C
What distinguishes the primary network from the guest network on most WLAN Access Points (APs)?
A) The primary network requires no password for access.
B) The guest network provides higher security than the primary network.
C) The primary network is secured with a password for regular users.
D) The guest network has the same encryption standards as the primary network.
C
Which encryption standard is commonly used to secure the primary network on WLAN Access Points (APs)?
A) WEP (Wired Equivalent Privacy)
B) WPA2 (Wi-Fi Protected Access 2)
C) No encryption is used for the primary network.
D) MAC address filtering is used for encryption
B
What is the purpose of having a separate guest network on WLAN Access Points (APs)?
A) To provide unrestricted access to all users
B) To prioritize network traffic for regular users
C) To allow temporary access without compromising the security of the primary network
D) To encrypt data transmissions for regular users
C
How does the security level of the guest network compare to the primary network on WLAN Access Points (APs)?
A) The guest network provides stronger security measures.
B) The guest network offers no security measures.
C) The guest network offers limited security compared to the primary network.
D) The guest network has the same level of security as the primary network.
C
How does the guest network on WLAN Access Points (APs) handle access during periods of high usage?
A) It restricts access to only regular users.
B) It prioritizes traffic from guest users over traffic from regular users.
C) It limits the bandwidth available to guest users to maintain performance for regular users.
D) It provides unrestricted access to all users, regardless of network load.
C
The ___________ is where the organization housing its primary servers.
a. MDF
b. guest house
c. SOHO network
d. data center
e. load balancer
D
What is typically housed within a data center of an organization?
A) Only the primary servers
B) The primary servers, campus backbone switches, and enterprise edge
C) Only the campus backbone switches
D) Only the enterprise edge
B
The ________ acts as a router at the front of the server farm.
a. load router
b. MDF
c. Layer 2 switch
d. front-end loader
e. load balancer
E
What is the primary function of a load balancer in a server farm?
A) To provide IP addresses to servers
B) To route requests to specific servers based on a formula
C) To act as a firewall for incoming requests
D) To manage internal network traffic within the server farm
B
How does a load balancer direct incoming requests to servers?
A) By assigning a unique IP address to each server
B) By forwarding requests to all servers simultaneously
C) By using a round-robin formula or more complex load-balancing algorithms
D) By broadcasting requests to all servers in the server farm
C
What happens if a server crashes in a server farm with a load balancer?
A) The load balancer assigns a new IP address to the crashed server.
B) The load balancer redistributes incoming requests to the remaining servers.
C) The load balancer stops sending requests to the crashed server and continues operating with the remaining servers.
D) The load balancer forwards all requests to a backup server until the crashed server is restored.
C