NCTI Field Tech 3 to 4 Questions With Complete Solutions
A repeater operates at which layer of the Open Systems
Interconnection reference model (OSI/RM)? Correct Answers
The Physical Layer.
A router makes its packet forwarding decision based on what
information? Correct Answers The router's routing table.
A store-and-forward email system will not deliver messages
until: Correct Answers The host requests the information.
All computers running on the transmission control
protocol/Internet protocol (TCP/IP) suite have which of the
following in common? Correct Answers Each computer is
assigned its own Internet protocol (IP) address.
At which point in the Dynamic Host Configuration Protocol
(DHCP) lease period does the client first attempt to renew its
lease? Correct Answers At 50% of the original lease time.
Coarse wavelength division multiplexing (CWDM) applications
were expanded to include use in large metropolitan networks,
utilizing wavelengths in what band?? Correct Answers E-band.
Convert the binary Internet protocol (IP) address
01110011.11001000.00101100.00000010 to decimal: Correct
Answers 115.200.44.2.
,Convert the Internet protocol (IP) address 172.68.10.2 from
decimal to binary: Correct Answers
10101100.01000100.00001010.00000010.
Devices connected to hubs share the same: Correct Answers
Collision domain.
Distance Vector Algorithms (DVA) operate in which manner?
Correct Answers They advertise their routing tables to directly
connected neighbor routers.
Host names and uniform resource locators (URL) are resolved to
Internet protocol (IP) addresses by which of the following
applications? Correct Answers Domain Name System (DNS).
How are store-and-forward Ethernet switches different from cut-
through switches? Correct Answers Store-and-forward
switches are more accurate, but cut-through switches are faster.
How does frequency division multiplexing (FDM) enable
multiple signals to share a common medium? Correct Answers
By assigning each signal a specific frequency or band of
frequencies called a channel.
How does IEEE 802.3 frame format differ from Ethernet
Version 2 frame format? Correct Answers The type field is
replaced with the length field.
How would an operator find a list of options available for the
ping utility? Correct Answers Type "ping" from a command
line.
, Hypertext transfer protocol (HTTP) is what type of protocol?
Correct Answers Stateless.
If we borrow 3 bits from a Class C network address, how many
useable subnets have we created? Correct Answers 8.
In a net mask address, what identifies the network and host
portions of the address? Correct Answers The network portion
of the net mask is set to all ones, and the host is set to all zeros.
In a synchronous optical network (SONET) what is the basic
building block having a data transmission rate of 51.84 Mbps?
Correct Answers The synchronous transport signal (STS)
frame.
In Simple Network Management Protocol (SNMP), when do
passive management agents take action on their own initiative?
Correct Answers When certain well-defined error conditions
occur they generate an unsolicited message called a trap.
In the five-layer hierarchy of Apple's operating systems, Mac
OS X/macOS, which layer is most complex? Correct Answers
Layer five, the application layer containing Cocoa and Carbon.
In what type of installation is wide wavelength division
multiplexing (WWDM) used? Correct Answers It is used in
passive optical networks (PON).
Internet protocol (IP) and X.25 are considered to be which of the
following? Correct Answers Protocols for the Network Layer.
A repeater operates at which layer of the Open Systems
Interconnection reference model (OSI/RM)? Correct Answers
The Physical Layer.
A router makes its packet forwarding decision based on what
information? Correct Answers The router's routing table.
A store-and-forward email system will not deliver messages
until: Correct Answers The host requests the information.
All computers running on the transmission control
protocol/Internet protocol (TCP/IP) suite have which of the
following in common? Correct Answers Each computer is
assigned its own Internet protocol (IP) address.
At which point in the Dynamic Host Configuration Protocol
(DHCP) lease period does the client first attempt to renew its
lease? Correct Answers At 50% of the original lease time.
Coarse wavelength division multiplexing (CWDM) applications
were expanded to include use in large metropolitan networks,
utilizing wavelengths in what band?? Correct Answers E-band.
Convert the binary Internet protocol (IP) address
01110011.11001000.00101100.00000010 to decimal: Correct
Answers 115.200.44.2.
,Convert the Internet protocol (IP) address 172.68.10.2 from
decimal to binary: Correct Answers
10101100.01000100.00001010.00000010.
Devices connected to hubs share the same: Correct Answers
Collision domain.
Distance Vector Algorithms (DVA) operate in which manner?
Correct Answers They advertise their routing tables to directly
connected neighbor routers.
Host names and uniform resource locators (URL) are resolved to
Internet protocol (IP) addresses by which of the following
applications? Correct Answers Domain Name System (DNS).
How are store-and-forward Ethernet switches different from cut-
through switches? Correct Answers Store-and-forward
switches are more accurate, but cut-through switches are faster.
How does frequency division multiplexing (FDM) enable
multiple signals to share a common medium? Correct Answers
By assigning each signal a specific frequency or band of
frequencies called a channel.
How does IEEE 802.3 frame format differ from Ethernet
Version 2 frame format? Correct Answers The type field is
replaced with the length field.
How would an operator find a list of options available for the
ping utility? Correct Answers Type "ping" from a command
line.
, Hypertext transfer protocol (HTTP) is what type of protocol?
Correct Answers Stateless.
If we borrow 3 bits from a Class C network address, how many
useable subnets have we created? Correct Answers 8.
In a net mask address, what identifies the network and host
portions of the address? Correct Answers The network portion
of the net mask is set to all ones, and the host is set to all zeros.
In a synchronous optical network (SONET) what is the basic
building block having a data transmission rate of 51.84 Mbps?
Correct Answers The synchronous transport signal (STS)
frame.
In Simple Network Management Protocol (SNMP), when do
passive management agents take action on their own initiative?
Correct Answers When certain well-defined error conditions
occur they generate an unsolicited message called a trap.
In the five-layer hierarchy of Apple's operating systems, Mac
OS X/macOS, which layer is most complex? Correct Answers
Layer five, the application layer containing Cocoa and Carbon.
In what type of installation is wide wavelength division
multiplexing (WWDM) used? Correct Answers It is used in
passive optical networks (PON).
Internet protocol (IP) and X.25 are considered to be which of the
following? Correct Answers Protocols for the Network Layer.
