System Administrator 2026
In SONET, STS-1 level of electrical signalling has the data rate of _________
  • A. 51.84 mbps
  • B. 155.52 mbps
  • C. 2488.320 mbps
  • D. 622.080 mbps
The path layer of SONET is responsible for the movement of a signal _________
  • A. From its optical source to its optical destination
  • B. Across a physical line
  • C. Across a physical section
  • D. Back to its optical source
The photonic layer of the SONET is similar to the __________ of OSI model.
  • A. Network layer
  • B. Data link layer
  • C. Physical layer
  • D. Transport layer
In SONET, each synchronous transfer signal STS-n is composed of __________
  • A. 2000 frames
  • B. 4000 frames
  • C. 8000 frames
  • D. 16000 frames
Which one of the following is not true about SONET?
  • A. Frames of lower rate can be synchronously time-division multiplexed into a higher-rate frame
  • B. Multiplexing is synchronous tdm
  • C. All clocks in the network are locked to a master clock
  • D. Sts-1 provides the data rate of 622.080mbps
A linear SONET network can be ________
  • A. Point-to-point
  • B. Multi-point
  • C. Both point-to-point and multi-point
  • D. Single point
Automatic protection switching in linear network is defined at the _______
  • A. Line layer
  • B. Section layer
  • C. Photonic layer
  • D. Path layer
A unidirectional path switching ring is a network with __________
  • A. One ring
  • B. Two rings
  • C. Three rings
  • D. Four rings
What is SDH?
  • A. Sdh is similar standard to sonet developed by itu-t
  • B. Synchronous digital hierarchy
  • C. Sdh stands for synchronous digital hierarchy and is a similar standard to sonet developed by itu-t
  • D. None of the mentioned