PROGRESSION: FIELD TECH III - IV CONVENTIONAL NCTI 2026-2027 ACTUAL EXAM 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) | ALREADY GRADED A+

PROGRESSION: FIELD TECH III - IV CONVENTIONAL NCTI

2026-2027 ACTUAL EXAM 300 QUESTIONS AND CORRECT

DETAILED ANSWERS WITH RATIONALES (VERIFIED

ANSWERS) | ALREADY GRADED A+

What is the name of the protocol by which management information for

a network element can be inspected or altered by a management station?

- ANSWER- Simple Network Management Protocol (SNMP).

Why does Simple Network Management Protocol (SNMP) use

unsolicited messages (traps) from the network elements to poll for

appropriate information? - ANSWER- Using traps is consistent with the

goal of simplicity and minimizing the amount of traffic generated by the

network management function.

What does the packet-based multimedia communications systems,

covered by the H.323, cover? - ANSWER- Realtime audio, video, and

data communications over Internet protocol (IP) packet networks.

Which version of the packet-based multimedia communications system,

covered by the H.323 standard, was the first to standardize requirements

for communications between a PC-based telephone and a telephone on

the switched circuit network (SCN) of the public telephone system? -

ANSWER- Version 2.

What component of the packet-based multimedia communications

system, covered by the H.323 standard, is considered to be the "brain" of

the network? - ANSWER- The gatekeeper.

In Simple Network Management Protocol (SNMP), when do passive

management agents take action on their own initiative? - ANSWERWhen certain well-defined error conditions occur they generate an

unsolicited message called a trap.

Which is the most important of the network troubleshooting steps? -

ANSWER- Identify the exact issue.

Ipconfig displays which of the following elements of client

configuration information? - ANSWER- Default gateway.

Which of the following is used to verify whether another host on a

transmission control protocol/Internet protocol (TCP/IP) network is

reachable? - ANSWER- Ping.

How would an operator find a list of options available for the ping

utility? - ANSWER- Type "ping" from a command line.

Which ping option allows you to specify the packet buffer size for each

ping packet? - ANSWER- Ping -l.

When troubleshooting, asking the question, "Has anything changed

recently that might have had an impact?", will aid you in: - ANSWERIdentifying the exact issue relating to a problem.

Which utility should be run to verify that your Windows client is

configured to use the correct Domain Name System (DNS) server? -

ANSWER- Ipconfig.

Which of the troubleshooting utilities presented expects a reply when it

sends a message to another computer? - ANSWER- Ping.

What entry would be made to log each hop along the way to a specific

Internet site? - ANSWER- Enter "tracert" followed by a host name for

the Internet site.

Which of the troubleshooting utilities presented is frequently used as a

starting point for transmission control protocol/Internet protocol

(TCP/IP) network problem isolation to learn what network a device

resides on? - ANSWER- Ipconfig.

How does frequency division multiplexing (FDM) enable multiple

signals to share a common medium? - ANSWER- By assigning each

signal a specific frequency or band of frequencies called a channel.

What best describes orthogonal frequency division multiplexing

(OFDM)? - ANSWER- It is a multicarrier transport scheme in which

narrowband carriers (subcarriers) are modulated independently, and then

multiplexed together.

In what type of installation is wide wavelength division multiplexing

(WWDM) used? - ANSWER- It is used in passive optical networks

(PON).

Coarse wavelength division multiplexing (CWDM) applications were

expanded to include use in large metropolitan networks, utilizing

wavelengths in what band?? - ANSWER- E-band.

The most commonly used dense wavelength division multiplexing

(DWDM) channels in broadband cable networks are in which band? -

ANSWER- The C-band (1,530 to 1,565 nm).

What determines the length of a time division multiplexing (TDM)

frame? - ANSWER- The number of input channels to the multiplexer.

What is an inefficient characteristic of synchronous time division

multiplexing (TDM) that is addressed by statistical TDM? - ANSWERTransport of empty time slots.

In a synchronous optical network (SONET) what is the basic building

block having a data transmission rate of 51.84 Mbps? - ANSWER- The

synchronous transport signal (STS) frame.