What operation is performed by an LSR when it receives an MPLS labeled packet?

• A.The LSR refers to its routing table and forwards the packet to the next LSR or LER without altering the MPLS label.
• B.The LSR refers to its MPLS label table, swaps the label and forwards the packet to the next LSR or LER.
• C.The LSR refers to its MPLS label table forwards the packet to the next LSR or LER without altering the MPLS label.
• D.The LSR refers to its MPLS label table, pops the label and forwards the packet to the next IP router.

Comment: *

Name: *

Email: *

Verification: *

Which of the following is NOT characteristic of Ethernet?

• A.It is a broadcast technology that can send frames to all devices attached to shared media.
• B.It uses a passive, wait-listen protocol called Carrier Sense Multiple Access with Collision Detection (CSMA/ CD).
• C.It uses IP addresses to identify interfaces on the common network media.
• D.It is part of the network interface layer of the TCP/IP protocol suite.

Comment: *

Name: *

Email: *

Verification: *

Choose two true statements that characterize Distance Vector Routing?

• A.Network converges quickly (within several seconds) after a topology change.
• B.Routers flood link information throughout the entire area.
• C.Routers do not have precise knowledge of the entire network topology.
• D.Routers send a copy of their routing table to their neighbors periodically.

Comment: *

Name: *

Email: *

Verification: *

Which tier of Internet service providers can reach any part of the Internet without having to purchase transit services from other Internet service providers?

• A.A Tier 1 ISP
• B.A Tier 2 ISP
• C.A Tier 3 ISP
• D.Tier 1 and Tier 2 ISPs

Comment: *

Name: *

Email: *

Verification: *

What must the sender do when it receives a window size of 0 from the receiver?

• A.Retransmit the previous segment.
• B.Terminate the TCP session.
• C.Send the next segment.
• D.Stop transmitting.

Comment: *

Name: *

Email: *

Verification: *