Tech 5 - 6
When installing a 66-block, which mounting guidelines should be followed?
A mount support bracket (also called a stand-off bracket) should be installed to help provide needed clearances.
Which configuration enables several telephone extensions to have a direct (home-run) connection to the same network circuit?
A multiple-clip configuration
Which of the following best describes a media access control (MAC) address?
A unique 12-digit, alpha-numeric identifier that is burned into the device by the manufacturer to identify it so that IP packets can be routed to it.
Which of the following best describes how a wiremap tester checks pin-to-pin continuity?
A wiremap includes one unit that injects a signal at one end of the cable and a second unit that checks the signal at the other end.
What is a main distribution frame?
A wiring arrangement that connects outside and internal telephone lines.
Asynchronous transfer mode (ATM) virtual circuits (VC) switch cells across networks by using which two header components?
A) Virtual path identifier (VPI) and virtual channel identifier (VCI).
For any digital subscriber line (DSL) version, connection speed depends on the customer's distance from the providers
Digital subscriber line access multiplexer (DSLAM).
Which of the following is a feature of a PBX?
Each phone is addressable.
When troubleshooting an alarm system, what does an RJ31X jack allow the technician to do?
Isolate itself from the premises wiring and quickly disconnect an alarm system by unplugging its jumper.
Which of the following is true about a properly wired RJ31X jack?
It allows the alarm panel to isolate itself from the premises wiring and disable the phone line when it needs to alert the monitoring location about an alarm activation.
Which of the following is an attribute of user datagram protocol (UDP) and not transmission control protocol (TCP)?
It is an unreliable best-effort delivery.
A wire map field cable tester can include a time domain reflectometer (TDR) to determine the distance to any breaks, shorts, or missed wires. In what situations can the tester be used?
It is used to certify structured wiring in commercial buildings and can be used to verify inside wire (IW) in residential settings.
What is a primary function of an RJ31X jack?
It provides a method for quickly disconnecting an alarm system by unplugging its jumper.
When stripping unshielded twisted-pair (UTP) cable, what is one factor that must be taken into account to ensure proper stripping?
Jacket thickness varies because of flame rating and manufacturer.
Which network connection has a relatively high cost, is billed on a per port charge, and a rate per mile for the length of the circuit?
Leased lines.
Which EMTA powering scheme provides power independent of the cable system and includes a battery backup and telemetry?
Local.
Which condition causes an EMTA to generate an alternating current (AC) fail alarm?
Loss of power.
If it is necessary to run cables from one intermediate distribution frame (IDF) to another, what type of connection block is used?
M66-150
Which of the following is a process that must be followed during a business order installation and differs from a residential order process?
Making sure the PBX is tested and is functioning properly.
Why is PacketCable VoIP (voice over Internet protocol) a more efficient way of handling calls?
Most cable operators have built their own IP telephone networks that use Internet protocol rules.
As part of multicast network management, what can notify Simple Network Management Protocol (SNMP) network management stations (NMS) of multicast problems and errors?
Multicast traps.
Frances connects her computer to the company's internal network, but she needs to access a public search engine. What Application Layer (Layer 7) protocol can allow her private Internet protocol (IP) address to connect to a public server?
Network address translation (NAT).
Which of the following allows a gateway router or firewall to act as an address converter between public and private Internet protocol (IP) addresses?
Network address translation (NAT).
If a 66-block has a green cover, what does that designate?
Network connections.
When a circuit is cross-connected to a customer's equipment or telephones, it is tagged for identification. Where else are telephone numbers and line positions on the embedded multimedia terminal adapter (EMTA) noted?
On the orange cover of the 66-block.
The IDEAL Pathfinder Tester is made up of:
One main unit and up to four remote modules.
In a T568A wiring scheme for a four-pair connection, which pair uses white/brown for tip and brown/white for ring?
Pair 4.
Which pins are often not installed in a RJ-11 jack?
Pins 1 and 6.
Which network type does intermediate system to intermediate system (IS-IS) protocol support?
Point-to-multipoint (P2MP)
Which tool is used to force down a twisted pair conductor in an insulation displacement connector (IDC) termination?
Punch down tool.
When a call is made from a phone that is on a managed IP phone system to a phone that is outside the managed IP phone system, how does the call get routed to the receiving phone?
The gateway down-converts the digital data to an analog electrical signal format and routes the call to the public switched telephone network (PSTN).
What is the location where the embedded multimedia terminal adapter (EMTA) is connected to both the outside and inside wiring?
The main closet or telecommunications closet.
For a business telephone installation, which of the following is the preferred location for the embedded multimedia terminal adapter (EMTA)?
The main closet.
When running unshielded twisted-pair (UTP) cable, it is critical that
The minimum bend radius be maintained to no less than 4 times the outside diameter.
Which of the following accurately describes the proper wiring of an RJ31X jack?
The tip and ring from the EMTA are terminated to the green and red terminals in the jack.
What is the maximum number of hunt groups that can be set up for a business IP voice account?
Three.
Which of the voice over Internet protocol (VoIP) service tiers bypasses the cable operator's direct link to the public switched telephone network (PSTN) and routes packets over the Internet to another telephone company?
Tier II Secondary VoIP.
What is the primary purpose of the border gateway protocol (BGP)?
To avoid routing loops between large networks.
Which phone system generates dial tone at the central office?
Traditional.
Which telephone system is characterized by dual tone multi-frequency (DTMF) tones being transmitted to the central office?
Traditional.
What causes unshielded twisted-pair (UTP) cable to come in a variety of thicknesses?
UTP jacket thickness varies because of flame rating and manufacturer.
What code covers the installation of station jacks?
Universal Service Ordering Code (USOC).
Intermediate system to intermediate system (IS-IS) builds adjacencies with all other routers. However, when connecting a local area network (LAN) to another LAN, which of the following is true?
Usually, only one router may represent a LAN to the other network.
Which one of the following is a step to take during the site survey when reviewing the location of all telephones and customer premises equipment (CPE)?
Verify that all of the telephones are working properly.
Which of the following is an attribute of transmission control protocol (TCP) and not user datagram protocol (UDP)?
When data is lost, it is retransmitted automatically.
How are indoor EMTA units normally powered?
With a 110 volt alternating current power source with battery backup
What is the oldest packet switching technology still in use worldwide?
X.25
Which of the following is a validly formed fully qualified domain name (FQDN)?
jefferson.lib.co.us
Which of the following represents a valid MAC address?
09:00:70:B3:B9:99.
In synchronous optical networks (SONET) and synchronous digital hierarchy (SDH), how much faster is the data rate of an electrical level STS-192 compared to an STS-1?
192 times.
Ray has logged into the corporate routers and configured open shortest path first (OSPF) on each. Which of the following addresses does OSPF use to multicast changes in the routing tables?
224.0.0.6
What is the maximum pulling tension for a four-pair unshielded twisted-pair (UTP) CAT-5e cable?
25 lbs.
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?
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?
255.255.255.0 to /32
Paula is dividing her home network into two smaller networks. Given the fact she is using the 192.168.100.0 network, which of the following subnet masks will supply the division she seeks?
255.255.255.128
What is the decimal equivalent of the binary number 00111001?
57
Which tool is used to tighten "F" connectors securely?
7/16 inch wrench
What is an international standard for a high-speed, connection-oriented, cell-switching technology?
Asynchronous transfer mode (ATM).
Which technology uses fixed-sized cells for transporting data?
Asynchronous transfer mode (ATM).
Why should the RJ31X jack be near a security company's alarm control panel?
Because it is wired between the alarm panel, and the premises, thereby helping to reduce potential problems in the customer premises wiring.
If the Internet protocol (IP) address 192.168.100.0 names the network, what kind of address is 192.168.100.255 for that same network?
Broadcast.
Grounding and protection are required in two places. One is in the equipment room or telecommunications closet. Where is the other?
Building entrance
Which of the following features are normally part of a PBX system?
Call forwarding, call waiting, speed dialing.
When a business has automatic call distribution on its telephone system, what do callers hear?
Callers are greeted with an automated message that notifies them that they will be on hold until someone is available.
According to Telecommunications Industry Association/Electronic Industries Alliance (TIA/EIA) standards, which type of unshielded twisted-pair (UTP) cabling is recommended for data-grade applications?
Category 5e
Because a cable operator will support as many lines as technically possible for a business customer, what does the installer have to do prior to connecting the embedded multimedia terminal adapter (EMTA)?
Check the RF signal levels on the cable entering the building.
Tom discovers the Internet protocol (IP) address of his computer is 192.10.10.10. What address class does Tom's IP belong to?
Class C.
Which of the following fields is not part of the Internet protocol (IP) packet header?
Class of Service (COS).
For Carrier Ethernet, why is tagging packets insufficient for bandwidth management?
Common carriers receive and process trillions of packets from millions of customers.
Routers in Internet Group Management Protocol (IGMP) use the Protocol Independent Multicast (PIM) protocol to build distribution trees. What happens once these trees are built?
Constantly updated.
To prevent incompatibility between IP telephony and security systems, what should a cable company recommend that a customer do?
Contact the alarm company prior to IP installation to ensure compatibility.
When using a twisted-pair cable tester, a green condition means:
Continuity exists throughout the circuit pair without faults.
When confirming work with the customer, if you are asked to make changes to their long-distance carrier, what should you do?
Explain to the customer that you do not have the authority to make these changes.
Which piece of equipment in a VoIP (voice over Internet protocol) phone system routes a call to the public switched telephone network (PSTN) when the receiving location is from outside the PacketCable managed IP network?
Gateway
The terminator tool is used to:
Give new service or take away service to a customer.
Once power has been disconnected at the tap, which of the following represents the proper way to jumper the EMTA for coax power?
Ground to return and coax to supply.
Which telephone system allows one extension to ring in multiple locations, either at the same time or in sequence?
Hosted PBX.
Which type of telephone system allows a company to have a single phone number reach all employees even though they reside in different geographical locations?
Hosted PBX.
What are the three sub-network interfaces managed by PacketCable?
Hybrid fiber/coax (HFC), managed IP, and public switched telephone network (PSTN).
There are three specific alarm monitoring concerns related to VoIP installation. Besides incompatibility issues with the in-line seizure module and the loss of electric power, what is the third concern?
Improper wiring at the installation.
What is the most common location for the RJ31X jack?
In or close to the alarm control panel.
Which key system architecture enables individual telephone sets that do not require any single shared-control unit?
Independent keysets.
What is the most common digital standard for fixed telephony devices?
Integrated services digital network (ISDN).
Internet group management protocol (IGMP) is carried by which protocol throughout a network?
Internet protocol (IP).
Which communication technique uses microwave frequencies?
Satellite.
What is the advantage of using a multiple-clip configuration for distribution applications in the 66-block?
Several extensions can have a direct (i.e., home-run) connection to the same network circuit.
Before starting a final review with a customer at the end of an installation, what should an installer try to do?
Talk to the same person that he or she spoke to at the beginning of the installation.
Which of the following does an embedded multimedia terminal adapter (EMTA) local powering scheme provide?
Telemetry data about the power operation of the EMTA.
What organization is responsible for developing telecommunication standards that address commercial building cabling for telecom products and services?
Telephone Industry Association / Electronic Industry Association (TIA/EIA)
In what way do ephemeral port numbers function?
Temporary.
What device is required to attach a non-integrated services digital networks (ISDN) device to an ISDN network?
Terminal adaptor (TA).
One of the functions of the IW (inside wire) cable tester is to:
Test line cords that connect the customer premises equipment (CPE) to modular data and telephone jacks.
Which device seizes the telephone line and dials out to an alarm monitoring location when the security system senses an emergency?
The DACT unit.
Why is the T568A wiring configuration recommended over the T568B wiring configuration?
The T568A configuration is backward compatible with Universal Services Ordering Code (USOC) RJ-XX wiring.
This organization is responsible for developing the telecommunications standards that address commercial building cabling for telecom products and services with wiring standards such as T568A and T568B to ensure consistent wiring and service delivery.
The Telecommunications Industry Association (TIA).
What will occur when the jumper is removed from an RJ31X jack?
The alarm system will not function properly.
Before a business telephone installation is performed in an office building, who must first approve it?
The building owner or management company.
When extending wiring into another part of a building becomes necessary, who is responsible for initiation the service?
The customer
Who owns and is responsible for the wiring between the small and medium business (SMB) customer's cross-connect block and the cross-connect block installed by the cable operator?
The customer
When a PBX or key system is involved in a business installation, the installer can set up the embedded multimedia terminal adapters (EMTA) and cable, but what has to happen before the installer can begin connecting the equipment?
The customer's PBX and key system technician must arrive at the location.
