22 Questions
What is the main advantage of Voice over frame relay (VoFR) according to the summary?
Low cost of long-distance communication
Which technology offers speeds up to 40 Gbps, as mentioned in the text?
ATM
What distinguishes DSL downstream speed from upstream speed based on the provided information?
Downstream speed is greater than upstream speed
Which WAN technology employs high-speed bus bandwidth up to 155 Mbps?
SMDS
What is the transmission speed reached by X.25 protocol based on packet switching?
2.048 Mbps
What does SONET offer as a fiber-optic solution according to the information provided?
High speeds up to 9.953 Gbps
Which technology is DSL a strong competitor to?
ISDN
What is the main transport method for SONET?
Fiber-optic cable
Which SONET transmission speed is designated by the code OC-48?
9953.28 Mbps
In SONET, what does the Layer 2 (Section Layer) primarily do?
Encapsulate data, sequences, and time frames
What network architecture uses a dual-ring topology for redundancy?
Ring topology
Which technology is a high-speed alternative to SONET and frame relay?
Ethernet
What type of cable connections can Ethernet backbone networks consist of?
Single-mode fiber-optic cable connections up to 43.4 miles
'Bidirectional line switching' in SONET offers what percentage of redundancy?
~99%
Which layer in the SONET model corresponds to the OSI model's Physical layer?
Photonic layer (bottom)
What does SDH stand for?
Synchronous Digital Hierarchy
What is one of the reasons for the popularity of X.25 networks?
Provision of worldwide connectivity between LANs
How does Frame Relay differ from X.25 networks?
Frame Relay uses FRAD and is connection-oriented.
Which technology is NOT mentioned as a replacement for X.25 networks?
ATM (Asynchronous Transfer Mode)
What is a characteristic of Voice over Frame Relay (VoFR)?
Utilizes PCM, ADPCM, and SB-ADPCM for audio creation.
What type of connection does Committed Information Rate (CIR) offer?
Pledged minimum transmission rate.
Which service is NOT offered by frame relay service providers?
Integrated Services Digital Network (ISDN)
Test your knowledge on designing Wide Area Network (WAN) communications by considering factors such as available options, usage plans, organization size, costs, and more. Explore the fundamentals of X.25, frame relay, ISDN, SMDS, ATM, DSL, SONET, and Optical Ethernet.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
