Comcast_Technical_Flashcards

Question 1

What does MAN stand for in networking?

Answer 1

Metropolitan Area Network

Question 2

What is the typical geographic scope of a MAN?

Answer 2

Covers a city or large campus, bigger than a LAN but smaller than a WAN

Question 3

What technology often replaces legacy circuits like T1 or T3?

Answer 3

Ethernet/Metro Ethernet

Question 4

What does DSx refer to in telecom?

Answer 4

Digital Signal levels, e.g., DS1 (T1, 1.5 Mbps), DS3 (T3, 45 Mbps)

Question 5

What does OC-x stand for?

Answer 5

Optical Carrier levels for fiber (e.g., OC-3 = 155 Mbps, OC-12 = 622 Mbps)

Question 6

What technology allows multiple signals over one fiber by using different light wavelengths?

Answer 6

Wavelength Division Multiplexing (WDM)

Question 7

What is Ethernet primarily used for?

Answer 7

Connecting devices in LANs and as carrier-grade service in MANs

Question 8

What’s the key advantage of WDM?

Answer 8

Increases bandwidth capacity without laying more fiber

Question 9

Which legacy telecom circuit runs at 1.5 Mbps?

Answer 9

T1 (DS1)

Question 10

Which legacy telecom circuit runs at 45 Mbps?

Answer 10

T3 (DS3)

Question 11

What does VoIP stand for?

Answer 11

Voice over Internet Protocol

Question 12

How does VoIP transmit voice?

Answer 12

As digital packets over IP networks

Question 13

What’s one major advantage of VoIP over analog phones?

Answer 13

Scalability and flexibility

Question 14

What are two types of internet Comcast offers?

Answer 14

Shared broadband and dedicated fiber internet

Question 15

What metrics matter most to customers for internet service?

Answer 15

Bandwidth, latency, uptime (SLA)

Question 16

What Comcast product is an example of VoIP?

Answer 16

Comcast Business VoiceEdge

Question 17

What kind of communications platform does VoIP enable?

Answer 17

Unified Communications (UC)

Question 18

Why is VoIP attractive for businesses?

Answer 18

Lower costs, remote flexibility, and feature-rich systems

Question 19

What does LAN stand for?

Answer 19

Local Area Network

Question 20

What does WAN stand for?

Answer 20

Wide Area Network

Question 21

What is the difference between LAN and WAN?

Answer 21

LAN is within one building/site, WAN spans large geographies

Question 22

What does VPN stand for?

Answer 22

Virtual Private Network

Question 23

What does a VPN provide?

Answer 23

A secure tunnel for data across the internet

Question 24

How does a MAN differ from a WAN?

Answer 24

MAN covers a metro region, WAN covers national/global

Question 25

Which Comcast offering helps manage multiple WANs?

Answer 25

SD-WAN

Question 26

What is the main purpose of a VPN for businesses?

Answer 26

Secure remote worker or site-to-site connectivity

Question 27

What does Layer 1 of the OSI model represent?

Answer 27

Physical layer – cables, fiber, signals

Question 28

What does Layer 2 of the OSI model represent?

Answer 28

Data Link – Ethernet, MAC addresses, switching

Question 29

What does Layer 3 of the OSI model represent?

Answer 29

Network – IP addresses and routing

Question 30

Which OSI layer deals with physical transmission media?

Answer 30

Layer 1 (Physical)

Question 31

Which OSI layer ensures devices on the same link can communicate?

Answer 31

Layer 2 (Data Link)

Question 32

Which OSI layer routes packets between different networks?

Answer 32

Layer 3 (Network)

Question 33

What protocol is most associated with Layer 3?

Answer 33

Internet Protocol (IP)

Question 34

What technology is most associated with Layer 2?

Answer 34

Ethernet switching

Question 35

What does Business Continuity focus on?

Answer 35

Keeping operations running during outages

Question 36

What does Disaster Recovery focus on?

Answer 36

Recovering IT systems after a disaster

Question 37

What Comcast service supports business continuity for internet?

Answer 37

Wireless LTE backup

Question 38

What are the three main goals of Business Continuity planning?

Answer 38

Redundancy, failover, backup connectivity

Question 39

What’s an example of a disaster recovery scenario?

Answer 39

Recovering systems after a hurricane or data center outage

Question 40

Why is redundancy important for BC/DR?

Answer 40

Ensures minimal downtime and resilience

Question 41

What type of Comcast services might be used for DR?

Answer 41

Cloud, internet, and connectivity services

Question 42

How do BC and DR differ in timing?

Answer 42

BC is during an event, DR is after the event

Question 43

What is the E-rate program?

Answer 43

A federal program providing discounts to schools and libraries for internet/telecom

Question 44

Who administers the E-rate program?

Answer 44

Universal Service Administrative Company (USAC)

Question 45

Who qualifies for E-rate discounts?

Answer 45

Schools and libraries

Question 46

What is the purpose of E-rate?

Answer 46

To make broadband affordable for education and libraries

Question 47

Why is E-rate relevant for Comcast sales?

Answer 47

Comcast is a major E-rate provider

Question 48

What is a key sales consideration with E-rate customers?

Answer 48

Aligning with funding cycles and application process

Question 49

What services might a school purchase under E-rate?

Answer 49

Internet, Ethernet, WiFi, and VoIP

Question 50

How does E-rate benefit schools financially?

Answer 50

Provides significant cost savings on technology services

Question 51

What does OSI stand for?

Answer 51

Open Systems Interconnection - Standardize how different computer systems communicate over a network.