Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CompTIA Network+ > T1 > Flashcards

T1 Flashcards

(63 cards)

Start Studying
1
Q

Main way WAN differs from LAN in ownership

A

Generally own LAN infrastructure, lease WAN infrastructure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

PSTN

A

Public Switched Telephone Network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which layers of the OSI model to WAN protocols and technologies occupy?

A

Physical, Data Link, sometimes network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

CPE

A

That’s called Customer Premises Equipment (CPE). It’s hardware (e.g., modems, routers) located at the subscriber’s site but owned by the service provider and used to deliver network services.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Local Loop connects the _____ via the _____ to the _____.

A

That pair of copper wires is called the local loop (also known as the last mile). It connects the customer premises (via the demarcation point) to the Central Office (CO).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

CO

A

Central Office. AKA POP (Point of Presence). Phone company building that connects the customer’s network to the provider’s switching network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Toll Network

Also known as…
Consists of _____ and _____

A

That’s called the toll network or carrier network core. It consists of trunk lines and core switches owned by the WAN provider or ISP, used to route data and voice traffic over long distances.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

WAN Connection Types

A

Dedicated (Leased) Lines, Circuit Switching, Packet Switching

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Dedicated (Leased) Lines

A

AKA Point-to-point or dedicated connections. These lines are direct and always open, reserved for the customer to use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Circuit Switching

A

uses the phone system - ISDN or Dial-up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Packet Switching

A

Packet switching involves breaking messages into chunks at the sending device.
Each packet can be sent over any number of routes on its way to its destination. The packets
are then reassembled in the correct order at the receiver.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

T1 Line

A

Basic, first level in bandwidth or speed for leased, synchronous connections between sites (WAN). Serves up to 24 Digital Signal 0 (DS0) 64Kbps Channels. Digital connection typically over 2 copper wire pairs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Countries that use T1

A

US, Japan (Uses J1 - same tech and speeds), South Korea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

European version of T1 and speed.

A

E1 or E Carrier Line. Serves 30 DS0 Channels – Slightly faster than T1 at 2.048Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What bit patterns does T1 use to transmit packets

A

DS1 (Digital Signal 1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Max speed of T1C

A

3.152Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Max speed of T1

A

1.544Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Max speed of T2

A

6.312Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Max speed of T3, digital signal level, number of T1 circuits

A

44.736Mbps, DS3, 28 T1 circuits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Max speed of T4

A

274.176Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Attenuation

A

Weakening of a signal as it travels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Standard for Synchronous Data Transmission on optical fiber

A

SONET. Synchronous Optical Network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

International Equivalent of SONET

A

SDH - Synchronous Digital Hierarchy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

SONET throughput (base data rate)

A

51.84Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Optical Carrier Level
Multiples of SONET. OC-1, OC-2, etc
26
OC-1 data rate
51.84Mbps
27
OC-3 data rate
155.52Mbps
28
OC-12 data rate
622.08Mbps
29
OC-48 data rate
2.488Gbps
30
OC-192 data rate
9.953Gbps
31
WDM
Wavelength Division Multiplexing (WDM) is a technology that multiplexes several optical carriers on a single optical fiber by using different wavelengths. Remember, fiber-optic signals are light, so using different wavelengths of the light spectrum is somewhat like using different frequencies in a radio wave.
32
Microwave radio relay
technology for transmitting digital and sometimes even analog signals between two locations on a line-of-sight radio path through the atmosphere
33
Differences between DSL and Cable
Speed, security (each has different vulnerabilities), popularity, customer satisfaction
34
HDSL
High bit-rate digital subscriber line. HDSL was the first DSL technology to use a higher-frequency spectrum of copper twisted-pair cables. HDSL was developed in the United States as a better technology for high-speed, synchronous circuits
35
Types of xDSL
HDSL, SDSL, VDSL, ADSL
36
SDSL
``` Symmetric (same rate in both directions) digital subscriber line (SDSL) provides T1/E1 type speeds symmetrically for both uploading and downloading data but doesn’t allow low-frequency phone calls on the same line ```
37
VDSL
VDSL, or very high bitrate DSL (VHDSL), provides faster data transmission over single, flat, untwisted or twisted pairs of copper wires. This capacity for blazingly fast speeds mean that VDSL is capable of supporting high-bandwidth applications like HDTV and telephone services like the popular Voice over IP (VoIP) as well as general Internet access over a single connection. VDSL is deployed over existing wiring used for POTS and lower-speed DSL connections
38
ADSL
Asymmetric (meaning different upload and download speeds) DSL has become the most popular xDSL because it focuses on providing reasonably fast upstream transmission speeds (768 Kbps) and very fast downstream transmission speeds (up to 9 Mbps, although usually slower). works on a single phone line without losing voice call capability
39
Headend
This is where all cable signals are received, processed, and formatted. The signals are then transmitted over the distribution network from the headend
40
Distribution Network
These are relatively small service areas that usually range in size from 100 to 2,000 customers. They’re typically composed of a mixed, fiber-coaxial, or hybrid fiber-coaxial (HFC) architecture
41
DOCSIS
Data over cable service interface specification (DOCSIS) This specification provides the interface requirements for a data over cable system, including that of high-speed data transfer to an existing cable TV system. All cable modems and similar devices have to measure up to this standard.
42
1G
Voice-only analog network. Wireless WAN technology.
43
2G
Wireless WAN technology. Digital voice and simple data (text)
44
3G
Wireless WAN technology.. High-speed voice and data, internet
45
4G
Wireless WAN technology. Goal is to provide data rates far beyond 3G.
46
Two varients of 4G
LTE, WiMAX
47
HSPA+
Evolved High Speed Packet Access (HSPA+) is really considered a 3.5 generation technology. 3-4mbps down, 1-2mbps up
48
WiMAX
World Wide Interoperability for Microwave Access (WiMax) is considered a true 4G technology. It is based on the IEEE 802.16 standard. It supports fixed (tower to tower) and mobile applications. 5-6mbps down, 2-3mbps up
49
LTE
Long Term Evolution (LTE) is the most promising of the emerging 4G technologies. Compatible with 3G and WiMAX. Best indoor coverage. 7-12mbps down, 3-5 up
50
Frame Relay
Frame Relay is a WAN technology in which variable-length packets are transmitted by switching.
51
Access rate
The maximum speed at which the Frame Relay interface can transmit.
52
Committed information rate (CIR)
The maximum bandwidth of data guaranteed to be delivered. In reality, it’s the average amount that the service provider will allow you to transmit, based on what you purchased.
53
ATM
Asynchronous Transfer Mode
54
What is the greatest advantage of PSTN (POTS)?
It's readily available
55
Which technology uses the term HFC?
Cable. Hybrid Fiber Coaxial is a telecommunication industry term for a network that incorporates botht optical fiber and coaxial cable to create a broadband network
56
You have one serial port on your router but need to connect many remote sites. What WAN protocol could you consider as an option?
Frame Relay.
57
What is the maximum speed for T1?
1.55Mbps
58
What does the acronym DSL stand for?
Digital Subscriber Line
59
Which WAN technologies are considered packet-switching networks?
Frame Relay and X.25
60
Which cellular technologies are considered 4G?
LTE and WiMAX
61
Which WAN technology is considered a cell-switching network?
ATM
62
What are the different flavors of xDSL?
HDSL, SDSL, VDSL, ADSL
63
What is another name for PON?
Fiber to the Premises

CompTIA Network+ (30 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions