NET (1)

 Which of the following is a key benefit of Ethernet WAN service?

• A) High setup costs and complexity

• B) Reduced expenses and easy administration
  
  

• C) Increased dependency on Frame Relay
  
  

• D) Use of analog communication lines

Ethernet WAN is commonly deployed today using

• A) Satellite communications
  
  

• B) Coaxial cable
  
  

• C) Fiber-optic cabling
  
  

• D) Dial-up modems

What is another name for Ethernet WAN when used within a city or metro area?

• A) DSL WAN
  
  

• B) Metro Ethernet (MetroE)
  
  

• C) Satellite WAN
  
  

• D) VPN over Frame Relay

Which two traditional WAN technologies is Ethernet WAN commonly replacing?

• A) ISDN and DSL
  
  

• B) Frame Relay and ATM
  
  

• C) Cable and Satellite
  
  

• D) MPLS and VPN

Ethernet WAN can be integrated with other services such as:

• A) Wi-Fi hotspots
  
  

• B) Virtual Private LAN Services (VPLS)
  
  

• C) PSTN
  
  

• D) VSAT satellite services

 MPLS is considered what type of WAN technology?

• A) Legacy low-speed WAN
  
  

• B) Multiprotocol high-performance WAN
  
  

• C) Circuit-switched telephony WAN
  
  

• D) Pure satellite WAN

How does MPLS direct data across the network?

• A) Using IP addresses at every router
  
  

• B) Using MAC addresses at every router
  
  

• C) Using short path labels instead of IP addresses
  
  

• D) Broadcasting frames to all routers

In an MPLS network, what does the label represent?

• A) IP address of the destination device
  
  

• B) The exact physical router address
  
  

• C) The predetermined path information for fast switching
  
  

• D) The encryption key for the data

MPLS is highly efficient because it:

• A) Recalculates routes at every hop
  
  

• B) Establishes a full dedicated circuit like Frame Relay
  
  

• C) Switches data based on short labels without looking at IP headers
  
  

• D) Uses public internet connections for communication

In the MPLS diagram, what are the "PE" devices?

• A) Provider Edge routers that connect customer networks to the MPLS cloud
  
  

• B) Packet Encapsulation switches inside the cloud
  
  

• C) Physical Ethernet routers for LANs
  
  

• D) Public Entry points for the Internet