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Which of the following best describes a Wide Area Network (WAN)?
a. A network limited to a single room
b. A network spanning a building
c. A network covering a large geographical area
d. A network only using wireless technologies
Answer: c. A network covering a large geographical areacloudflare+2
What does the abbreviation WAN stand for?
a. Web Allocation Network
b. Wide Area Network
c. Wired Application Network
d. Workstation Access Node
Answer: b. Wide Area Networktestbook
Which of the following is the largest example of a WAN?
a. Local network
b. Campus area network
c. Metropolitan area network
d. The Internet
Answer: d. The Internetscribd+1
Which device typically connects a LAN to a WAN?
a. Hub
b. Switch
c. Router
d. Bridge
Answer: c. Routernetworklessons+1
WANs primarily operate at which OSI model layers?
a. Application and Presentation
b. Physical and Data Link
c. Network and Transport
d. Presentation and Session
Answer: b. Physical and Data Linkccnablog+1
What is the main purpose of a WAN?
a. To connect devices within a room
b. To connect LANs across large distances
c. To manage local printers
d. To secure wireless access points
Answer: b. To connect LANs across large distancescisco+2
Which of the following is a WAN protocol?
a. Bluetooth
b. Ethernet
c. Frame Relay
d. Token Ring
Answer: c. Frame Relayaws.amazon+2
Leased lines in WANs commonly use which serial interface standard?
a. HDMI
b. RS-232
c. V.35
d. SATA
Answer: c. V.35networklessons
What is MPLS in the context of WANs?
a. Multi-Point Local System
b. Multiprotocol Label Switching
c. Master Protocol Link Service
d. Multi-Layered Processing System
Answer: b. Multiprotocol Label Switchingquickstart
Which technology is a circuit-switched WAN technology?
a. DSL
b. ISDN
c. Ethernet
d. Wi-Fi
Answer: b. ISDNquickstart+1
Which of the following is NOT typically regarded as a WAN technology?
a. PPP
b. Frame Relay
c. Token Ring
d. MPLS
Answer: c. Token Ringccnablog+1
What is usually used at the edge of a WAN to provide connectivity?
a. Access Point
b. Router
c. Printer
d. Display
Answer: b. Routeraws.amazon+1
What is a common use for WANs in business?
a. Connecting local storage devices
b. Connecting office locations in multiple cities
c. Powering on computers
d. Upgrading device firmware
Answer: b. Connecting office locations in multiple citiescisco+1
What does SD-WAN stand for?
a. Software-Defined WAN
b. Secure Design WAN
c. Service-Distributed WAN
d. Single Domain WAN
Answer: a. Software-Defined WANquickstart
Which transmission medium is commonly used in WANs for long distances?
a. Unshielded Twisted Pair
b. Fiber Optic Cable
c. Infrared
d. Bluetooth
Answer: b. Fiber Optic Cablesanfoundry+1
Which protocol was designed for point-to-point WAN connections?
a. PPP (Point-to-Point Protocol)
b. SMTP
c. HTTP
d. FTP
Answer: a. PPPccnablog
WAN connections provided by ISPs are usually:
a. User-owned and managed
b. Leased or rented
c. Free of cost
d. Temporary wireless links only
Answer: b. Leased or rentednetworklessons+1
Which type of switching is used in Frame Relay WANs?
a. Circuit switching
b. Packet switching
c. Message switching
d. Frequency switching
Answer: b. Packet switchingquickstart+1
The DTE device in a WAN link is usually:
a. The service provider’s equipment
b. The local user’s router
c. The end-user’s computer
d. The backbone transmission cable
Answer: b. The local user’s routernetworklessons
What is a CSU/DSU used for in WANs?
a. To encode and decode wireless signals
b. To connect LAN switches
c. To connect digital lines to routers
d. To print documents
Answer: c. To connect digital lines to routersnetworklessons
Which of the following is a feature unique to WANs, not LANs?
a. Use of twisted pair cabling
b. Public carrier involvement
c. Data frame transmission
d. Use of star topology
Answer: b. Public carrier involvementcisco+1
The main advantage of using packet-switching in WANs is:
a. Fixed dedicated bandwidth
b. Efficient use of network resources
c. Data can only travel one direction
d. Increased latency
Answer: b. Efficient use of network resourcesccnablog+1
Which describes a “leased line” in a WAN?
a. Temporary wireless path
b. Permanent, dedicated connection
c. Public Wi-Fi connection
d. Bluetooth link
Answer: b. Permanent, dedicated connectionquickstart+1
What does DCE stand for in WAN contexts?
a. Data Circuit Emulator
b. Data Communication Equipment
c. Device Communication Emulator
d. Digital Control Encoder
Answer: b. Data Communication Equipmentnetworklessons
The process of dividing data into frames for WAN transport occurs at which OSI layer?
a. Physical
b. Data Link
c. Network
d. Transport
Answer: b. Data Linkaws.amazon
What is the main difference between LAN and WAN?
a. WAN covers a smaller area
b. LAN is always wireless
c. WAN connects geographically dispersed networks
d. LAN cannot use routers
Answer: c. WAN connects geographically dispersed networksgeeksforgeeks+1
Which protocol encapsulates network layer data over serial links in WANs?
a. PPP
b. HTTP
c. FTP
d. SMTP
Answer: a. PPPccnablog
Which of the following is NOT a typical WAN connection type?
a. Leased line
b. Frame Relay
c. Fiber Channel
d. MPLS
Answer: c. Fiber Channelquickstart+1
Compared to LANs, WANs generally offer:
a. Lower latency
b. Slower speeds
c. No security
d. Fewer network devices
Answer: b. Slower speedsfortinet+1
The “subscriber loop” in WAN terminology refers to:
a. Central office connections to user premises
b. Backbone provider links
c. Only data center to data center links
d. Wireless access points
Answer: a. Central office connections to user premisessanfoundry
What is typically used to identify the destination in WAN packet switching?
a. Device MAC address
b. Port number
c. Network address
d. Firmware version
Answer: c. Network addressaws.amazon
Which WAN technology uses virtual circuits to transmit data?
a. Ethernet
b. Frame Relay
c. Token Ring
d. Wi-Fi
Answer: b. Frame Relayaws.amazon+2
What is the role of encryption in WANs?
a. To color code wires
b. To compress files
c. To secure communications over public links
d. To print documents
Answer: c. To secure communications over public linksaws.amazon
The Internet is composed of many interconnected:
a. Local printers
b. Wide Area Networks
c. Bluetooth devices
d. NFC tags
Answer: b. Wide Area Networkstestbook+1
A satellite link is an example of which WAN connection?
a. Wireless WAN connection
b. LAN only
c. Local cable system
d. Bluetooth
Answer: a. Wireless WAN connectionnetworklessons+1
For WANs, which of these media offers the highest data rates?
a. Copper wires
b. Bluetooth radio waves
c. Fiber optic cable
d. Coaxial cable
Answer: c. Fiber optic cablesanfoundry+1
The main function of a WAN access provider is to:
a. Manage a user’s printers
b. Provide connectivity between geographically distant LANs
c. Install local switches
d. Publish web pages
Answer: b. Provide connectivity between geographically distant LANsverizon+1
What is a benefit of using MPLS in WANs?
a. Single protocol for all purposes
b. Traffic engineering and improved data flow
c. Only allows IPv4 traffic
d. Restricts protocols to ATM
Answer: b. Traffic engineering and improved data flowquickstart
Which describes “hybrid WAN” architecture?
a. LAN with only wireless connections
b. WAN using multiple connectivity technologies
c. Token Ring in a star topology
d. Only uses leased lines
Answer: b. WAN using multiple connectivity technologiesaws.amazon
Which protocol supports secure site-to-site WAN connectivity over the Internet?
a. SMTP
b. VPN (Virtual Private Network protocols)
c. HTTP
d. ARP
Answer: b. VPN (Virtual Private Network protocols)quickstart
What is a switched WAN connection?
a. Connection using rented radio spectrum
b. Connection using shared communication medium
c. Only Wi-Fi links
d. Direct copper wire without switches
Answer: b. Connection using shared communication mediumccnablog+1
Which is an example of a packet-switched WAN network?
a. ISDN
b. Frame Relay
c. PSTN
d. DSL
Answer: b. Frame Relayccnablog
Which allows remote offices to connect securely to a central location via WAN?
a. VPN
b. Bluetooth
c. HDMI cable
d. USB dongle
Answer: a. VPNaws.amazon+1
Which layer of the OSI model do most WAN protocols operate on?
a. Session
b. Data Link
c. Application
d. Presentation
Answer: b. Data Linkccnablog+1
When do companies often use WANs?
a. To connect printers to computers
b. For voice communication only
c. To link multiple geographic locations
d. To charge mobile devices
Answer: c. To link multiple geographic locationscisco+1
Which protocol replaced X.25 in many WAN deployments for better efficiency?
a. Frame Relay
b. HTTP
c. SMTP
d. SSH
Answer: a. Frame Relayccnablog
In WANs, congestion control is managed primarily by which layer?
a. Application
b. Network
c. Data Link
d. Physical
Answer: b. Networkaws.amazon
WANs typically use public:
a. Carriers or telecommunication providers
b. Private home routers exclusively
c. Only internal switches
d. Only open Wi-Fi
Answer: a. Carriers or telecommunication providersverizon+2
Synchronous Optical Networking (SONET) is used in WANs for:
a. Wireless sensor communication
b. High-speed fiber optic data transfer
c. Bluetooth file transfers
d. Printer sharing
Answer: b. High-speed fiber optic data transferquickstart+1
Which of the following is a limitation of WAN compared to LAN?
a. Larger coverage area
b. Higher data speeds
c. Greater complexity and cost
d. Easier setup
Answer: c. Greater complexity and costfortinet+2

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