Telecommunications Protocols Flashcards
6 cards from real Telecommunications practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Telecommunications Protocols flashcards as text
What is the function of PPP in WAN communications?
Answer: Provide a standard data link protocol for point-to-point serial connections
PPP (Point-to-Point Protocol) is a data link layer protocol used to establish direct connections between two nodes over serial WAN circuits.
What does the DSCP EF (Expedited Forwarding) designation ensure for voice traffic?
Answer: Low latency, low jitter, and low packet loss treatment
DSCP EF (DSCP value 46) marks packets for Expedited Forwarding, ensuring they receive low-latency, low-jitter, low-loss treatment through the network.
What is the purpose of IEEE 802.1Q in Ethernet networks?
Answer: Enable VLAN tagging in Ethernet frames
IEEE 802.1Q defines the VLAN tagging standard, adding a 4-byte tag to Ethernet frames to carry VLAN membership information.
What does an SLA (Service Level Agreement) typically specify for telecom services?
Answer: Guaranteed uptime, latency, jitter, and packet loss thresholds
A telecom SLA defines measurable performance commitments including availability (uptime), latency, jitter, and packet loss that the carrier guarantees.
What protocol does IPsec use for key exchange?
Answer: IKE (Internet Key Exchange)
IKE (Internet Key Exchange) is the protocol used by IPsec to negotiate security associations and exchange cryptographic keys.
What is Frame Relay primarily known as in telecom history?
Answer: A legacy packet-switched WAN technology using virtual circuits
Frame Relay was a popular WAN packet-switching technology using permanent virtual circuits (PVCs), largely replaced by MPLS and broadband.