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What does ESS stand for in IEEE 802.11 networking?
a. Extended Service Set
b. Efficient Service System
c. Ethernet Service Segment
d. Enhanced Security Set
Answer: a. Extended Service Setwikipedia+2
Which device forms the core of a Basic Service Set (BSS)?
a. Router
b. Access Point
c. Switch
d. Hub
Answer: b. Access Pointscribd+2
Which statement describes an Extended Service Set?
a. Single AP network
b. Two or more BSS interconnected
c. Only wireless clients
d. Only wired clients
Answer: b. Two or more BSS interconnectedsciencedirect+2
All APs within an ESS share which network property?
a. Unique BSSID
b. Common SSID
c. Multiple MAC addresses
d. Different VLANs
Answer: b. Common SSIDgeeksforgeeks+2
What is the advantage of using ESS over a single BSS?
a. Lower cost
b. Greater wireless coverage
c. Reduced complexity
d. Less security
Answer: b. Greater wireless coveragegeeksforgeeks+2
What network component connects multiple APs within an ESS?
a. Distribution System
b. Virtual LAN
c. Ethernet Cable
d. Firewall
Answer: a. Distribution Systemlogicapt+2
In an ESS, clients perceive the network as:
a. Multiple networks
b. A single unified network
c. Multiple VLANs
d. Multiple ESSID
Answer: b. A single unified networknetworklessons+2
What service allows users to move across APs without losing connectivity in ESS?
a. Routing
b. Roaming
c. Switching
d. Bridging
Answer: b. Roaminggeeksforgeeks+2
To which layer does an ESS appear as a single BSS?
a. Physical Layer
b. Logical Link Control Layer
c. Application Layer
d. Transport Layer
Answer: b. Logical Link Control Layersciencedirect+2
Which identifier is common across all APs in an ESS?
a. VLAN ID
b. SSID
c. BSSID
d. IP address
Answer: b. SSIDgeeksforgeeks+2
Which IEEE standard defines ESS?
a. IEEE 802.3
b. IEEE 802.11
c. IEEE 802.1Q
d. IEEE 802.15
Answer: b. IEEE 802.11wikipedia+1
An ESS enables a wireless network to cover:
a. Small rooms only
b. Large areas such as campuses
c. Two devices only
d. Wired-only segments
Answer: b. Large areas such as campuseswikipedia+2
What happens when a client moves from one BSS to another within an ESS?
a. Disconnects
b. Roams seamlessly
c. Re-authenticates
d. Changes VLAN
Answer: b. Roams seamlesslynetworklessons+2
Each AP in an ESS uses a _________ identifier.
a. Common BSSID
b. Unique BSSID
c. Unique SSID
d. MAC address only
Answer: b. Unique BSSIDwikipedia+1
What does distribution system (DS) interconnect in an ESS?
a. Wired clients
b. Multiple APs/BSSs
c. Switches
d. Routers only
Answer: b. Multiple APs/BSSscisco+2
Which of the following is not an advantage of ESS?
a. Scalability
b. Limited coverage
c. Centralized management
d. Enhanced mobility
Answer: b. Limited coveragegeeksforgeeks+1
Which parameter do wireless clients use to identify an ESS?
a. IP address
b. SSID
c. MAC address
d. Port number
Answer: b. SSIDlogicapt+1
In ESS, APs are usually connected to what network type?
a. Wired LAN
b. WAN
c. MAN
d. VPN
Answer: a. Wired LANgeeksforgeeks+2
Which configuration allows wireless devices to move between BSSs in an ESS?
a. Ad hoc mode
b. Infrastructure mode
c. Peer-to-peer mode
d. Mesh mode
Answer: b. Infrastructure modelogicapt+1
What ensures seamless transition between APs in ESS?
a. Same channel allocation
b. Overlapping coverage areas
c. Different SSIDs
d. Physical proximity
Answer: b. Overlapping coverage areasipcisco+1
Which identifier is unique to each AP in ESS?
a. SSID
b. BSSID
c. VLAN ID
d. Gateway IP
Answer: b. BSSIDnetworklessons+1
In ESS topology, client stations are able to:
a. Connect to a single AP only
b. Roam across multiple APs
c. Connect only via wired LAN
d. Connect with VPN only
Answer: b. Roam across multiple APsgeeksforgeeks+1
ESS is necessary when:
a. Only one AP is present
b. Coverage for a large area is needed
c. Wired connectivity only
d. No APs present
Answer: b. Coverage for a large area is neededwikipedia+2
What protocol facilitates client movement between APs in ESS?
a. DHCP
b. Roaming protocols
c. Proxy ARP
d. Spanning Tree
Answer: b. Roaming protocolsnetworklessons
Which system supports centralized management in ESS?
a. Standalone APs
b. Wireless controller-based system
c. Only switches
d. Direct communication only
Answer: b. Wireless controller-based systemgeeksforgeeks
ESS covers which of the following network types?
a. Local administrative domains
b. Large physical areas
c. WAN only
d. Only homes
Answer: b. Large physical areasgeeksforgeeks+2
Which network parameter helps mitigate interference within ESS?
a. Using same channels for all APs
b. Assigning different channels to APs
c. Using same IPs for APs
d. Disabling wireless security
Answer: b. Assigning different channels to APsipcisco+1
Which is not a function of distribution system in ESS?
a. Interconnecting APs
b. Providing wireless coverage
c. Routing packets externally
d. Supporting client mobility
Answer: c. Routing packets externallylogicapt+1
In ESS, why is overlapping coverage between APs important?
a. To increase interference
b. To permit seamless roaming
c. To restrict bandwidth
d. To lower throughput
Answer: b. To permit seamless roamingipcisco+1
Which IEEE standard pertains to wireless local area networks using ESS?
a. 802.11
b. 802.3
c. 802.15
d. 802.1D
Answer: a. 802.11wikipedia+1
ESS can be expanded by:
a. Adding more APs
b. Increasing bandwidth alone
c. Using repeaters only
d. Restricting SSID broadcast
Answer: a. Adding more APsgeeksforgeeks+2
Clients moving from one AP to another in ESS are performing:
a. Channel switching
b. Roaming
c. Handover
d. VLAN hopping
Answer: b. Roamingnetworklessons+1
What helps distinguish individual BSSs within ESS?
a. IP address
b. Unique BSSID
c. Password
d. SSID
Answer: b. Unique BSSIDwikipedia+1
What layer in OSI model is impacted by ESS configuration?
a. Data Link Layer
b. Presentation Layer
c. Application Layer
d. Session Layer
Answer: a. Data Link Layerscribd+1
ESS setup increases:
a. Network complexity
b. Security flaws
c. Speed only
d. Single point of failure
Answer: a. Network complexitygeeksforgeeks+1
What information do APs broadcast to facilitate ESS association?
a. Channel number only
b. SSID and BSSID
c. Port numbers only
d. VLAN ID only
Answer: b. SSID and BSSIDlogicapt+2
Client mobility within ESS is described as:
a. Wired migration
b. Wireless handoff (roaming)
c. Channel hopping
d. Proxy migration
Answer: b. Wireless handoff (roaming)ipcisco+1
For seamless roaming in ESS, APs should have:
a. Overlapping basic service areas
b. Distinct network types
c. Different network protocols
d. Restricted access control
Answer: a. Overlapping basic service areasipcisco+1
Each AP in ESS is a part of which logical group?
a. VLAN
b. SSID group
c. Basic Service Set
d. Security domain only
Answer: c. Basic Service Setwikipedia+2
Which type of authentication may be centralized in ESS?
a. Local only
b. Centralized authentication
c. No authentication
d. Token-based only
Answer: b. Centralized authenticationwikipedia
ESS is used in which environments?
a. Small offices only
b. Enterprise networks and campuses
c. Personal LANs only
d. Peer-to-peer only
Answer: b. Enterprise networks and campusesgeeksforgeeks+2
Which parameter is unique for each AP but common for ESS?
a. SSID
b. BSSID
c. Gateway IP
d. Subnet Mask
Answer: a. SSIDnetworklessons+2
ESS helps wireless clients to:
a. Remain connected while moving
b. Switch networks manually
c. Use multiple VLANs
d. Restrict access
Answer: a. Remain connected while movinggeeksforgeeks+1
The logical network service set identifier for ESS is:
a. SSID
b. AP name
c. VLAN name
d. DS number
Answer: a. SSIDlogicapt+2
Which of the following is essential for creating ESS?
a. Multiple APs
b. Single router
c. Proxy ARP
d. Wired-only clients
Answer: a. Multiple APssciencedirect+2
Which network layer entity coordinates communication in ESS?
a. Logical Link Control
b. Network Layer
c. Transport Layer
d. Session Layer
Answer: a. Logical Link Controlscribd+2
When APs in ESS share the same SSID but different BSSID, this enables:
a. Seamless roaming
b. Channel interference
c. Frequency clash
d. VLAN hopping
Answer: a. Seamless roamingnetworklessons+1
What is the role of Distribution System (DS) in ESS?
a. Connect multiple APs
b. Restrict roaming
c. Segment traffic by VLAN
d. Limit SSID broadcast
Answer: a. Connect multiple APscisco+2
Which network model increases both coverage and user mobility using ESS?
a. Wired infrastructure
b. Wireless infrastructure
c. Hybrid model
d. Virtual LAN only
Answer: b. Wireless infrastructurelogicapt+1
ESS allows which device to move throughout a building without disconnecting?
a. Switch
b. Wireless client device (STA)
c. Hub
d. Fiber channel device
Answer: b. Wireless client device (STA)wikipedia+2

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