Term
| An arrangement that allows a customer to lease only some of the channels on a T1 line. |
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Definition
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Term
| What are two protocols that enable a workstation to connect to another computer using a serial connection? |
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Definition
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Term
| A network that travels distances and connects two or more LAN's. |
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Definition
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Term
| What topology has sites organized in layers to form hierarchical grouping? |
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Definition
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Term
| Continuously available communication channels from a telecommunication provider |
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Definition
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Term
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Definition
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Term
| What does PSTN stand for? |
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Definition
| Public Switched Telephone Network |
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Term
| What topology is the most fault tolerant topology to implement? |
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Definition
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Term
What are the four key strengths of SONET?
(Synchronous Optical Network) |
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Definition
1. WAN integration
2. Fast data transfer rates
3. Simple link additions and removals
4. High degree of fault tolerance |
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Term
| A logical Point to Point connection that relies on switches to determine the optimal path between sender and receiver. |
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Definition
| SVC (Switch Virtual Circuit) |
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Term
| In a ____________ each site is connected in a ring pattern. |
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Definition
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Term
| A variation of DSL that provides equal throughput both upstream and downstream between the carrier and the customer. |
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Definition
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Term
| What is the best terminal equipment option for T-Carriers? |
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Definition
| Routers, or a Layer 3 or higher Switch |
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Term
| What does the Terminal Adapter (TA) do? |
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Definition
| it converts analog to digital, or digital signals to analog, on ISDN lines |
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Term
| PRI,which is a type of ISDN, uses _____B channel(s), and _____D channel(s) |
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Definition
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Term
| BRI,which is a type of ISDN, uses _____B channel(s), and _____D channel(s). |
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Definition
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Term
| What is a secure virtual connection between two nodes on a VPN (Virtual Private Network)? |
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Definition
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Term
| _____ relies on RDP, which is an Application Layer protocol that uses TCP/IP to transmit graphics and text quickly. |
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Definition
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Term
| The part of a phone system that connects a customer site with a telecommunication carrier is what? |
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Definition
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Term
| In this topology each site is directly connected to no more than two other sites. |
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Definition
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Term
| An expensive fiber-optic link that can support high frequencies. |
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Definition
| HFC (Hybrid Fiber Coaxial) |
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Term
| What is the maximum throughput for T1 carriers, which is also equivalent to PRI? |
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Definition
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Term
| ATM (Asynchronous Transfer Mode) functions in what layer? |
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Definition
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Term
| How big is an ATM (Asynchronous Transfer Mode) packet or cell? |
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Definition
53 bytes (48 data bytes plus a 5-byte header)
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Term
| What is an updated digital version of X.25 that also relies on packet switching? |
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Definition
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Term
| Does the Bearer or Data channel carry data? |
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Definition
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Term
| A digital carrier standard used in Europe that offers 30 channels and a max throughput of 2.048 Mbps. |
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Definition
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Term
| What is the place called where a telephone company terminates lines, and switches calls between different locations? |
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Definition
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Term
| A method of connecting and logging on to a LAN that is remote or not physically connected to the LAN is called what? |
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Definition
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Term
| T1's using STP require repeaters every _____feet. |
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Definition
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Term
| Which WAN topology has a single site that acts as a central connection point for several other points? |
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Definition
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Term
| Fiber optic or coaxial cable that connects a neighborhood cable node to a customers house. |
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Definition
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Term
| Characteristic of a dual ring topology that allows them to automatically reroute traffic along the backup ring if the primary ring is severed. |
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Definition
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Term
| What is not common to both WAN's and LAN's? |
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Definition
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Term
| What is better for video conferencing: Symmetrical or Asymmetrical? |
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Definition
| Asymmetrical, it has faster downstream throughput |
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Term
| What does DSLAM stand for? |
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Definition
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Term
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Definition
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Term
| What is the dial-up networking software provided with Microsoft Windows 95, 98, NT, and 2000 client operating systems? |
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Definition
| RAS (Remote Access Service) |
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Term
| What is an analog, packet switched technology designed for long-distance data transmission and standardized by the ITU in the mid-1970's? |
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Definition
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Term
| A device used on ISDN networks that connects the incoming twisted pair wiring with the customer's ISDN terminal equipment. |
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Definition
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Term
| A term used to describe data traffic that flows from a customer's site to a carrier's facility. |
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Definition
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Term
| A term used to describe data traffic that flows from a carrier's facility to the customer. |
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Definition
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Term
| In asymmetrical communications, downstream throughput is usually much _____ than upstream throughput. In symmetrical communications, however, both throughput's are _____. |
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Definition
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Term
| A characteristic of transmission technology that provides equal throughput for data traveling both upstream and downstream and is suited to users who both upload and download a significant amount of data. |
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Definition
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Term
| The characteristic of transmission technology that affords greater bandwidth in one direction (either from the customer to the carrier, or vice versa) than in the other direction. |
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Definition
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Term
| An additional connection device required on PRI to handle the multiple ISDN lines between the customer's network termination connection and the local phone companies wires. |
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Definition
| NT2 (Network Termination 2) |
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Term
| What is a device used to convert digital signals into analog signals for use with ISDN phones and other analog devices? |
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Definition
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Term
| A communications protocol that enables a workstation to connect to a server using a serial connection. This can support multiple Network Layer protocols and can use both asynchronous and synchronous communications. This also performs compression and error correction and requires little configuration on the client workstations. |
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Definition
| PPP (Point-to-Point Protocol) |
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Term
| A Layer 2 (Data Link) protocol developed by Microsoft that encapsulates PPP data for transmission over VPN connections. It is simple, but less secure than other modern tunneling protocols. |
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Definition
| PPTP (Point-to-Point Tunneling Protocol) |
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Term
| A protocol that encapsulates PPP data, for use on VPN's, based on Cisco technology. It is most commonly used because it has a simple configuration, and runs on any connection type. |
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Definition
| L2TP (Layer 2 Tunneling Protocol) |
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Term
| What is the throughput for a bearer channel for BRI? For PRI? |
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Definition
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Term
| What is the throughput for a Data channel for BRI? For PRI? |
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Definition
| 16 Kbps for BRI,64 Kbps for PRI |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Partial Mesh Topology WAN |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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