NCTI 5-6
__________ protocol provides a global addressing structure, service type requests, and packet
fragmentation and reassembly. - ANS-IPv4
According to Telecommunication Standardization Sector (ITU-T), what is a next-generation
network (NGN)? - ANS-A packet-based network.
According to the ANSI/TIA/EIA-606 color coding guidelines, which color represents the
telephone demarcation point in a commercial building? - ANS-Orange
According to the National Electric Code (NEC) article 800-179, which type of cable marking
shows that a cable is riser-rated? - ANS-CMR
As part of multicast network management, what can notify Simple Network Management
Protocol (SNMP) network management stations (NMS) of multicast problems and errors? -
ANS-Multicast traps.
Asynchronous transfer mode (ATM) can be transported over multiprotocol label switching
(MPLS) networks and the reverse is also true. Looking at their individual attributes, where ATM
must segment and encapsulate data packets into cells and then decapsulate and reassemble,
MPLS needs to only do this. - ANS-Add an additional header.
Asynchronous transfer mode (ATM) virtual circuits (VC) switch cells across networks by using
which two header components? - ANS-Virtual path identifier (VPI) and virtual channel identifier
(VCI).
At work, Emily's laptop is assigned the Internet protocol (IP) address 192.10.10.10. When Emily
takes the computer home, the laptop is assigned the IP address of 192.168.100.25. Whether at
work or at home, what is the classful netmask assigned to her network interface card? -
ANS-255.255.255.0
Bruce purchased a replacement router/firewall combination machine to replace the old one he
inherited from the previous network administrator. The old router used decimal notation for
masks. The new router uses Classless Inter-Domain Routing (CIDR) notation for masks. Which
of the following decimal to CIDR notations are not valid? - ANS-255.255.255.0 to /32
Can you match the color to the cabling and wiring used in businesses? - ANS-Green = Network
connections (e.g., network equipment)
Blue Horizontal connections to telecommunications outlets
Orange = Demarc (e.g., service provider endpoint)
Purple = Common equipment (PBX, host LAN, multiplex devices)
Can you match the command prompt to its description? - ANS-netsh = Provides a computer
currently running on the network the capability of viewing and modifying the network
configuration.
cls = Clears the data from the screen.
,CTRL+C = Halts or attempts to halt any action that is currently running in the Windows Control
Prompt.
systeminfo = Yields the configuration of the computer.
nslookup = Shows the IP address of any DNS server name provided or, conversely, finds the
DNS server name for any IP address that is provided.
Can you match the commercial TV mode feature to its function? - ANS-Band/Automatic
Frequency Control = Determines what RF band the RF distribution system should use and then
selects the appropriate value it before tuning channels or running Auto Tuning.
Start Channel = Sets the initial channel number for when the TV is turned on.
Installer Sequence = Allows the access code used to engage the commercial mode setup menu
to be changed.
Power Management = Saves energy by setting the number of hours of inactivity allowed before
the TV automatically turns itself off.
Can you match the IP packet header field to its description? - ANS-Flags = A 3-bit field controls
fragmentation. Bit 0 is reserved and must be set to zero. Bit 1 instructs that a packet not be
fragmented. Bit 2 indicates more fragments are coming.
ECN (Explicit Congestion Notification) = A 2-bit field that offers end-to-end network congestion
notification between network devices to reduce packet loss.
Destination Address = A 32-bit field that contains the IP address of the receiving host. It does
not change as the packets traverse the network, unless the datagram passed through a network
address translation (NAT) device.
IHL (Internet Header Length) = A 4-bit field counts the number of 32-bit words in the header.
Identification = A 16-bit field that tags a group of IP packet fragments. Each datagram must
have a unique identification number so receiving hosts can reassemble the fragmented
datagram.
Can you match the network connection to its advantages and disadvantages? - ANS-Leased
lines = Advantages are a high level of security, a high quality of service (QoS), and full control of
the circuit. A customer can operate any equipment over those lines. Disadvantages are the user
must provide network management and the cost is high.
Dial-up connection = An advantage is the pay-as-you-go service. The customer only pays a per
minute charge for the time that they are connected. A disadvantage is that transmission over
dial-up circuits is traditionally slow, and can be susceptible to noise and other issues related to
analog telephone lines.
, Can you match the OSI reference model layers (by order) to the TCP/IP model layers? -
ANS-Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
Can you match the protocol to its description? - ANS-Host identity protocol (HIP) = Allows for
the separation of Internet protocol (IP) addresses from the location function of the IP address
when communicating on a virtual private network (VPN) with a mobile device.
Password authentication protocol (PAP) = The two endpoints exchange hostnames and
passwords. The hostname and password are sent in the clear and can be easily intercepted.
Challenge handshake protocol (CHAP) = The two endpoints use a challenge/response
authentication system.
Microsoft-CHAP (MS-CHAP) = The target challenges the requester, which calculates a value to
combine with its hostname as a response.
Can you match the security consideration to its description? - ANS-IP multicast data encryption
= This combines Group Domain of Interpretation (GDOI) with Internet protocol security (IPSec)
to secure multicast traffic flowing through a network device.
Firewall protection = Protects networks and users. "Tunneling" multicast messages through the
this area circumvents security policies.
Policing multicast networks = Multicast networks require mechanisms to recognize illegitimate
multicast groups, and to disable unauthorized groups, group ranges, and, if necessary, network
routers.
Service-level security = Networks using IP multicast can use filtering mechanisms to ensure that
data streams are sent (and new distribution tree branches are created) only for legitimate
receivers and requesting routers.
Can you match the STB capability to its features? - ANS-Multi-tuner HDTV host, Multimedia
over Coax (MoCA) multi-room STB with built-in DVR = Analog and digital tuner; HDTV; digital
video and audio output, analog video, and audio output; multi-room functionality.
__________ protocol provides a global addressing structure, service type requests, and packet
fragmentation and reassembly. - ANS-IPv4
According to Telecommunication Standardization Sector (ITU-T), what is a next-generation
network (NGN)? - ANS-A packet-based network.
According to the ANSI/TIA/EIA-606 color coding guidelines, which color represents the
telephone demarcation point in a commercial building? - ANS-Orange
According to the National Electric Code (NEC) article 800-179, which type of cable marking
shows that a cable is riser-rated? - ANS-CMR
As part of multicast network management, what can notify Simple Network Management
Protocol (SNMP) network management stations (NMS) of multicast problems and errors? -
ANS-Multicast traps.
Asynchronous transfer mode (ATM) can be transported over multiprotocol label switching
(MPLS) networks and the reverse is also true. Looking at their individual attributes, where ATM
must segment and encapsulate data packets into cells and then decapsulate and reassemble,
MPLS needs to only do this. - ANS-Add an additional header.
Asynchronous transfer mode (ATM) virtual circuits (VC) switch cells across networks by using
which two header components? - ANS-Virtual path identifier (VPI) and virtual channel identifier
(VCI).
At work, Emily's laptop is assigned the Internet protocol (IP) address 192.10.10.10. When Emily
takes the computer home, the laptop is assigned the IP address of 192.168.100.25. Whether at
work or at home, what is the classful netmask assigned to her network interface card? -
ANS-255.255.255.0
Bruce purchased a replacement router/firewall combination machine to replace the old one he
inherited from the previous network administrator. The old router used decimal notation for
masks. The new router uses Classless Inter-Domain Routing (CIDR) notation for masks. Which
of the following decimal to CIDR notations are not valid? - ANS-255.255.255.0 to /32
Can you match the color to the cabling and wiring used in businesses? - ANS-Green = Network
connections (e.g., network equipment)
Blue Horizontal connections to telecommunications outlets
Orange = Demarc (e.g., service provider endpoint)
Purple = Common equipment (PBX, host LAN, multiplex devices)
Can you match the command prompt to its description? - ANS-netsh = Provides a computer
currently running on the network the capability of viewing and modifying the network
configuration.
cls = Clears the data from the screen.
,CTRL+C = Halts or attempts to halt any action that is currently running in the Windows Control
Prompt.
systeminfo = Yields the configuration of the computer.
nslookup = Shows the IP address of any DNS server name provided or, conversely, finds the
DNS server name for any IP address that is provided.
Can you match the commercial TV mode feature to its function? - ANS-Band/Automatic
Frequency Control = Determines what RF band the RF distribution system should use and then
selects the appropriate value it before tuning channels or running Auto Tuning.
Start Channel = Sets the initial channel number for when the TV is turned on.
Installer Sequence = Allows the access code used to engage the commercial mode setup menu
to be changed.
Power Management = Saves energy by setting the number of hours of inactivity allowed before
the TV automatically turns itself off.
Can you match the IP packet header field to its description? - ANS-Flags = A 3-bit field controls
fragmentation. Bit 0 is reserved and must be set to zero. Bit 1 instructs that a packet not be
fragmented. Bit 2 indicates more fragments are coming.
ECN (Explicit Congestion Notification) = A 2-bit field that offers end-to-end network congestion
notification between network devices to reduce packet loss.
Destination Address = A 32-bit field that contains the IP address of the receiving host. It does
not change as the packets traverse the network, unless the datagram passed through a network
address translation (NAT) device.
IHL (Internet Header Length) = A 4-bit field counts the number of 32-bit words in the header.
Identification = A 16-bit field that tags a group of IP packet fragments. Each datagram must
have a unique identification number so receiving hosts can reassemble the fragmented
datagram.
Can you match the network connection to its advantages and disadvantages? - ANS-Leased
lines = Advantages are a high level of security, a high quality of service (QoS), and full control of
the circuit. A customer can operate any equipment over those lines. Disadvantages are the user
must provide network management and the cost is high.
Dial-up connection = An advantage is the pay-as-you-go service. The customer only pays a per
minute charge for the time that they are connected. A disadvantage is that transmission over
dial-up circuits is traditionally slow, and can be susceptible to noise and other issues related to
analog telephone lines.
, Can you match the OSI reference model layers (by order) to the TCP/IP model layers? -
ANS-Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
Can you match the protocol to its description? - ANS-Host identity protocol (HIP) = Allows for
the separation of Internet protocol (IP) addresses from the location function of the IP address
when communicating on a virtual private network (VPN) with a mobile device.
Password authentication protocol (PAP) = The two endpoints exchange hostnames and
passwords. The hostname and password are sent in the clear and can be easily intercepted.
Challenge handshake protocol (CHAP) = The two endpoints use a challenge/response
authentication system.
Microsoft-CHAP (MS-CHAP) = The target challenges the requester, which calculates a value to
combine with its hostname as a response.
Can you match the security consideration to its description? - ANS-IP multicast data encryption
= This combines Group Domain of Interpretation (GDOI) with Internet protocol security (IPSec)
to secure multicast traffic flowing through a network device.
Firewall protection = Protects networks and users. "Tunneling" multicast messages through the
this area circumvents security policies.
Policing multicast networks = Multicast networks require mechanisms to recognize illegitimate
multicast groups, and to disable unauthorized groups, group ranges, and, if necessary, network
routers.
Service-level security = Networks using IP multicast can use filtering mechanisms to ensure that
data streams are sent (and new distribution tree branches are created) only for legitimate
receivers and requesting routers.
Can you match the STB capability to its features? - ANS-Multi-tuner HDTV host, Multimedia
over Coax (MoCA) multi-room STB with built-in DVR = Analog and digital tuner; HDTV; digital
video and audio output, analog video, and audio output; multi-room functionality.
