Telecommunications Telecommunications Protocols 1

Question 1

What is the purpose of BGP in the internet?

Accepted Answer

Exchange routing information between autonomous systems

Answer

BGP (Border Gateway Protocol) is the inter-domain routing protocol that manages how packets are routed between autonomous systems on the internet.

Question 2

What is the primary purpose of MPLS in carrier networks?

Accepted Answer

Forward packets using short labels rather than long IP table lookups

Answer

MPLS (Multiprotocol Label Switching) improves packet forwarding efficiency by using short labels instead of complex IP routing table lookups.

Question 3

What does SS7 stand for in telecom signaling?

Accepted Answer

Signaling System Number 7

Answer

SS7 (Signaling System No. 7) is the protocol suite used by PSTN carriers worldwide to set up and tear down telephone calls and manage services.

Question 4

What protocol does OSPF use for route advertisements?

Accepted Answer

IP multicast (protocol 89)

Answer

OSPF uses IP protocol 89 with multicast addresses (224.0.0.5 and 224.0.0.6) to exchange link-state advertisements.

Question 5

What is the primary difference between TCP and UDP?

Accepted Answer

TCP provides reliable delivery with acknowledgments; UDP is connectionless with no guarantees

Answer

TCP guarantees delivery through acknowledgments and retransmissions, while UDP is faster but provides no delivery guarantees.

Telecommunications Practice Test