Advancement 6

After entering "arp" into the MS-DOS command line, which of the following switches would display the ARP cache?

-a or -g

What is the binary equivalent to the decimal number "14"?

0000 1110

According to 10BaseT wiring rules, what is the maximum segment length without a repeater?

100 m

Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding as well as an additional copper mesh shield?

10Base5 cable

Which of the following is a Class C IP address?

192.168.40.15

Which of the following describes the bandwidth of a single FT1?

64 Kbps

How much bandwidth in a T1 circuit is allocated for control information?

8 Kbps.

Which of the following specifications provides a standard definition of Ethernet VLANs?

802.1Q

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 is implemented over a public telecommunication switching system, such as a frame relay cloud?

A public network

Which of the following best represents a hub?

A repeater

What happens when a router forwards data packets from one network to another network?

A) The router repeats the frame without changes onto the Ethernet network. C) The destination address of the router in the framed packet is removed and the packet header address is inspected by the router to determine the next destination address to encapsulate around the packet. D) The router removes the frame header and trailer, and transmits the packet onto the Ethernet network.

Admission control protocols, authentication mechanisms, and _______ are three ways communication networks provide admission control.

Access Control Lists (ACLs)

Which of the following protocols is commonly used in the Session Layer?

Advanced Program-to-Program Communications (APPC)

Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following?

An informal conversation in which each person speaks when the opportunity presents itself, but only one person speaks at any time

Which of the following is defined as a loss in signal amplitude, or strength, that occurs as a signal passes through a transmission medium and interconnecting devices?

Attenuation

What method, in SIP terminology, is defined as a message that terminates a session by either endpoint?

BYE

What type of network management and utility software is typically used by network administrators and information systems personnel?

Backup and recovery utilities.

Bridges and Layer 2 switches filter traffic in which way?

By evaluating the destination MAC address in each frame and switching each frame to the port that leads to the destination frame address

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.

Which layer of the OSI protocol stack handles frames?

Data Link

Data security, data compression, and ________ are the three main services that the Presentation Layer provides.

Data representation

Static routing and dynamic routing are two out of three different types of indirect routing. What is the third type?

Default routing

What Protocol Independent Multicast (PIM) is designed to support large, densely populated multicast groups?

Dense Mode (DM)

Which of the following SIP functions is defined as "SIP determines if an endpoint is available and willing to participate in a call"?

Determining endpoint availability

Which application is associated with the well-known port number 53?

Domain Name Server (DNS)

In large networks, how do most routers get their routing tables?

Each router automatically builds and maintains its own routing table

What voice issue is a normal occurrence on the PSTN and other voice networks, and occurs as a result of network delay and the two- to four-wire conversion process?

Echo

Scenario: As you are connecting the office computers, you use one patch cord to connect each patch panel port to a hub port, and another patch cord to connect each work area port to a PC. You power up all the PCs and look at the hub port status indicators. All but one port shows green. What is the first troubleshooting step you should take?

Establish the symptoms

The IEEE 802.3 standard defines which of the following?

Ethernet

Forwarding, Learning, and _______ are three important functions provided by a bridge.

Filtering

Which of the following is a connection-oriented packet-switched network service that works at the Data Link Layer?

Frame relay

What term describes the number of wave crests that pass a fixed point during a particular period of time?

Frequency

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.

________ is an application that manages Internet resources and transmits them in response to requests from Web browsers.

HTTP server

In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously".

Half-duplex

What are the three sub-network interfaces managed by PacketCable?

Hybrid fiber/coax (HFC), managed IP, and public switched telephone network (PSTN).

What Fast Ethernet standard can send Ethernet frames at 100 Mbps over Category 5E UTP or fiber optic cabling?

IEEE 802.3u

Which of the following are kept in a computer's Address Resolution Protocol (ARP) cache?

IP address and MAC address

Which of the following best represents a logical address?

IPv6

What is the second step when troubleshooting a network?

Identify the affected area

Which of the following, within the TCP/IP model layers, delivers packets to their destination across multiple networks, as does the Open Systems Interconnection (OSI) model Network Layer?

Internetwork Layer

What is a private, internal network that uses Internet applications, tools, and protocols?

Intranet

Which of the following is a Microsoft Windows utility that displays a computer's IP addressing and connectivity settings?

Ipconfig

When a router forwards data from a frame relay network to an Ethernet network, what happens?

It encapsulates the packet in an Ethernet frame and then transmits the frame over the Ethernet network.

When a repeater receives a bit pattern at its input, what does it do?

It generates the same pattern at its output, at a higher power level

Which Quality of Service (QoS) parameter is defined as a variable delay that is measured in a number of ways, such as a percentage of the maximum network delay (+/- 10 percent), or as a variation above or below the average network delay (+/- 10 ms of the average network delay over a period of time)?

Jitter

What does the service code 411 represent?

Local Directory Assistance

Which of the following best describes the copper cabling that connects many homes and businesses to the nearest CO?

Local loops

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.

This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used by only one network interface card anywhere in the world.

Media access control address (MAC)

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.

Which type of address is unique anywhere in the world?

NIC address

According to the North American Numbering Plan (NANP), what does the "803" in 803-550-0000 represent?

Number Plan Area

Which of the following acronyms is defined as a forwarding behavior a node applies to a packet based on the packet's condition? The packet's Differentiated Services Code Points (DSCP) indicates the particular _____ a packet should receive as it passes from hop to hop.

PHB

Which solution is more economical than using regular long distance service and enables companies to route telephone call over their data network?

Packet telephony

Transport layer processes work with transmission channels using multiplexing and ___________ techniques.

Parallelization

Which MS-DOS command-line utility is the quickest and easiest way to evaluate whether a computer is up and running, and attached to a TCP/IP network?

Ping

Which protocol has a header of 5 bytes and a trailer of 3 bytes?

Point-to-Point Protocol

What type of routing allows network administrators to specify additional information sources for the routing table and network model?

Policy-based

Which of the following does a CO DACS provide?

Provides a semi-permanent path for voice and data signals

In data networking, ________ describes the characteristics of a transmission link, such as throughput, setup time, or accuracy.

Quality of service (QoS)

What are Subscriber Line Carrier (SLC) circuits used for?

Reduce the number of physical wire pairs

Which of the following are two types of domain names?

Relative name and fully qualified domain name (FQDN)

Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic techniques used whenever different layers of protocols work together. What is the fourth?

Segmentation

Scenario: You have finally identified the affected area and, as you proceed to the next step, you realize that since this is a new installation, there is no previous time that is known when everything worked. The installation itself is the only "change" and the third troubleshooting step. What step is next?

Select the most probable cause

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.

What three basic functions does a telephone switch do when it processes calls?

Signaling, routing, and switching

Which of the following requires a laser transmitter?

Single-mode fiber

Which of the following is defined as a set of device-to-device paths through the network such that there is one, and only one, path between any two devices?

Spanning Tree Protocol

The feature of a PBX system that creates a log of all incoming and outgoing calls is called?

Station Message Detail Recording (SMDR)

________ allows network administrators to break up a single network address into smaller network addresses, creating router-connected network segments, all with their own unique network address space.

Subnetting

Which device cannot solely break up LAN broadcast traffic? If large workgroups present broadcast containment issues, consider VLANs designed as separate routed subnets.

Switch

What is the main difference between a standard switch and a bridge?

Switches effectively multiply the network's bandwidth

What organization is responsible for developing telecommunications standards that address commercial building cabling for telecom products and services?

Telecommunications Industry Association/Electronic Industries Alliance (TIA/EIA).

What enables the transport of computer data over analog telephone local loops?

Telephone modems.

What is the Signaling System 7 (SS7) protocol used for?

Telephone network control signaling

What device is required to attach a non-ISDN device to an ISDN network?

Terminal adaptor (TA)

Which ITU-T H.323 packet multimedia standards component is used for real-time bi-directional multimedia communications, and can either be a PC or a stand-alone device running an H.323 protocol stack and the desired multimedia applications?

Terminals

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).

When light travels through a fiber-optic cable, the change in refractive index causes the light to refract off which of the following?

The boundary between the core and the cladding

Before a business telephone installation is performed in an office building, who must first approve it?

The building owner or management company.

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.

When extending wiring into another part of a building becomes necessary, who is responsible for initiating 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.

What is happening in step 8 of the SS7-VoIP Gateway Call Progress?

The destination SSP rings the destination subscriber telephone set

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.

If a network contains an active loop, what problem can occur?

The network becomes congested with duplicate frames

Two CPUs have the same size data bus. Which one will process data faster?

The one with a higher clock speed

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.

The header of an Internet Control Message Protocol (ICMP) message includes a Type field. The number in this field represents a message type as well as the format of a packet. What does the type field "14" represent?

Timestamp Reply

Which of the following is an example of a Transport Layer protocol?

Transmission Control Protocol (TCP)

_____ is a simple file transfer protocol used to transport data packets over UDP.

Trivial File Transfer Protocol (TFTP)

An Application Layer process needs to transmit data with as little overhead as possible. If the data is lost, there will be no ill effects; the sender will simply retransmit it. What Transport Layer protocol should this process use?

User Datagram Protocol

Curiosity, malice, and toll fraud are a few types of security problems that this service is vulnerable to?

Voice mail

In what part of a building would you typically find punch-down blocks?

Wiring closet