Cable Laying and Jointing Quiz

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What is the limit for ADSL service in terms of feet?

8,000 (correct)

18,000

20,000

10,000

Which type of ADSL variation allows the modem to adjust connection speed based on line length and quality?

RADSL (correct)

VDSL

All

SDSL

What bandwidth is generally considered as broadband internet when connecting to customers?

56 kbps

64 kbps

256 kbps (correct)

128 kbps

What is the function of the Float Rectifier in a power plant?

48.5 Volts D.C Signup and view all the answers

How is regulation typically done in power plants?

By varying the secondary of the main transformer automatically depending on output Voltage Signup and view all the answers

What does SMPS stand for?

Switching Mode Power Supply Signup and view all the answers

What is the theoretical upper limit on data rate in POTS with an available voice band of 3.5KHz and allowed S/N=30dB?

9.6 Kbps Signup and view all the answers

In a broadband connection, what happens if an ADSL modem fails?

Both Broadband and Telephone service get affected Signup and view all the answers

Which component presents the interfaces to the local distribution for broadband services at the customer premises?

Service modules (SM) Signup and view all the answers

What is the common design of most POTS splitters?

Passive Signup and view all the answers

Which type of switch are DSLAMs connected to?

Tier 1 Switches Signup and view all the answers

What is the maximum frequency range of a copper pair typically measured in?

Megahertz Signup and view all the answers

Which of the following IP addresses is not listed as a destination in the routing table of the router with address 168.127.114.5/16 and 192.14.15.9/24?

168.127.11.31 Signup and view all the answers

Which next hop IP address is not a valid match in the routing table for a router with addresses 128.17.114.5/16 and 203.114.15.9/24?

203.114.15.43 Signup and view all the answers

In which routing table entry will the router with addresses 172.14.114.5/16 and 198.114.15.9/24 not have a valid 'Type' value?

static Signup and view all the answers

Which IP address, not mentioned in the router's addresses, should not be found in its routing table?

204.127.11.71 Signup and view all the answers

For which router with addresses 204.127.11.31 and 204.127.11.41, which entry is most likely to be present in its routing table?

(a) Destination: 204.127.11.0 Next Hop: 204.127.11.x Type: direct Signup and view all the answers

In a conventional 3 piece power plant, ballast chokes are provided in the Battery charger to limit what?

Charging current variations Signup and view all the answers

Is the statement 'The FR current is shared by Exchange load and Battery set' true or false?

False Signup and view all the answers

Which two power converters are present in the SMPS module?

Boost converter and DC converter Signup and view all the answers

In SMPS modules, the output voltage in float mode is -54 ± 0.5 V. What is the output voltage in charge mode?

-54.5 ± 0.5 V Signup and view all the answers

Why is a snubber circuit provided in SMPS modules?

To reduce switching losses of the semiconductors Signup and view all the answers

What type of charger is suitable for charging VRLA battery?

Constant voltage charger Signup and view all the answers

What is the term used for the jointing of pairs of one large size cables to two or more smaller size cables?

Tee joint Signup and view all the answers

How should telecom cables be laid when crossing power cables?

At right angles to the power cables Signup and view all the answers

What are the protective stone slabs placed over cables in trenches called?

Warning Bricks Signup and view all the answers

Why is overlay of conductors in a pair done during the manufacture of telecom cables?

Cross talk Signup and view all the answers

What is the circuit between two exchanges in a local network called?

Telephone circuit Signup and view all the answers

Which statement correctly distinguishes between Local Area Networks (LAN) and Wide Area Networks (WAN)?

A WAN has higher delays and higher costs than LAN Signup and view all the answers