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Uni > ch1 itce314 > Flashcards

ch1 itce314 Flashcards

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1
Q

Give an example of a computer network

A

the public internet

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2
Q

What is the Internet in a nuts and bolts description?

A

The Internet is a computer network that interconnects billions of computing devices throughout the world.

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3
Q

Give examples of traditional computing devices.

A

desktop computers
Linux workstations
servers

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4
Q

What is the function of a server? provide examples.

A

store and transmit information such as Web pages and e-mail messages.

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5
Q

Give examples of non traditional computing devices.

A

Smart phone tablet.
Internet of things
TV’s
Gaming consoles
thermostats
home security systems
home appliances
watches
eyeglasses
cars
traffic control systems

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6
Q

Why would the term computer network sound outdated now?

A

given the many nontraditional devices that are being hooked up to
the Internet.

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7
Q

What would you call the devices at the edge of the internet?

A

hosts or end systems

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8
Q

What is connecting end systems?

A

Communication links
packet switches.

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9
Q

Give examples of different types of physical media that communication links come in.

A

coaxial cable
copper wire
optical fiber
radio spectrum

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10
Q

How is the transmission rate of a link measured?

A

bits/second

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11
Q

What is a packet?

A

A segment of a larger unit of data,
with pertinent address information that helps identify the sender and intended recipient of the data,
transmitted between devices over a network to the destination end system,
where they are reassembled into the original data.

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12
Q

What does a packet switch do to an arriving packet?

A

it takes the packet arriving on one of its incoming communication links and forwards that packet on one of its outgoing
communication links.

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13
Q

Give the most prominent types of packet switches.

A

routers and link-layer switches.

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14
Q

What characteristic is common between routers and link-layer switches?

A

Both types of switches forward packets toward their ultimate destinations.

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15
Q

Where are link layers switches typically used?

A

access networks

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16
Q

Where are routers typically used?

A

network core

17
Q

In networks, what is a path (route)?

A

The sequence of communication links and packet switches traversed by a packet from the sending end system to the receiving end system

18
Q

How do end systems access the internet?

A

Through Internet service providers (ISPs)

19
Q

Give examples on ISPs

A

Residential ISPs
university ISPs
ISPs that provide wifi access in airports, hotels, coffee shops, and other public places
cellular data ISPs.

20
Q

What kind of high speeds are local cable or telephone companies?

A

Residential ISPs

21
Q

what What does ISP compose of?

A

a network of packet
switches and communication links

22
Q

What type of network access do ISPs provide to the end systems?

A

Residential broadband access, such as cable modem or DSL
high speed, local area network access
mobile wireless access.

23
Q

How are different tiers of ISPs connected?

A

lowertier ISPs are interconnected through national and international upper-tier ISPs and these upper-tier ISPs are connected directly to each other. An upper-tier ISP
consists of high-speed routers interconnected with high-speed fiber-optic links.

24
Q

Since ISPs are interconnected, is the management interconnected to?

A

No, Each ISP network, whether upper-tier or lower-tier, is managed independently

25
Q

What is the protocol that all ISPs run? and what it does breifly.

A

IP protocol, conforms to certain naming and address conventions.

26
Q

What are protocols?

A

mutually agreed upon sets of rules that allow two nodes on a network to exchange data.
They define communication rules and establish compatibility guidelines.
and control the sending and receiving of information within the Internet.

27
Q

Give examples on protocols.

A

Transmission Control Protocol (TCP)
Internet Protocol (IP)

28
Q

What does the IP protocol specify?

A

the format of the packets that are sent and received among routers and end systems.

29
Q

Who developed the internet standards?

A

the Internet Engineering Task Force (IETF)

30
Q

What are the IETF standards documents called?

A

requests for comments (RFCs).

31
Q

What are RFCs, and how they started?

A

requests for comments, started out as general requests for comments to resolve network and protocol design problems that faced the precursor to the Internet, RFCs tend to be quite technical and detailed.

32
Q

what do RFCs do?

A

They define protocols such as TCP, IP, HTTP (for the Web), and SMTP (for e-mail). There are currently nearly 9000 RFCs.

33
Q

Give an example on a notable committee for networked links. and what they do.

A

The IEEE 802 LAN Standards Committee,, specifies the Ethernet and wireless WiFi standards

Uni (3 decks)

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