C1. Networking Fundamentals Flashcards

1
Q

What is a workstation?

A

It’s a seriously powerful computer with more than one CPU whose resources are available for other computers if and when needed

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2
Q

What is the difference between a workstation and a client?

A

Client machines typically ask for access to resources from a server or a powerful workstation

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3
Q

What is a server?

A

A cool computer with a superior CPU(s..), hard drive space, and memory

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4
Q

What is a host?

A

It’s a network device with some IP addresses

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5
Q

What are the two kinds of network topologies

A

Physical and logical

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6
Q

Define bus topology

A

It’s a physical network topology where all computers on the network see all the data that’s flowing through a cable; only one computer - to which data is addressed - actually gets it

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7
Q

What are the advantages of bus topology?

A

1) Easy to install

2) Not very expensive

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8
Q

Disadvantages of bus topology

A

1) Hard to troubleshoot, change, or move

2) Little fault tolerance - if central cable fails so does everything else

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9
Q

Define Star Topology

A

It’s a physical (??) WAN topology where all computers are connected to a central point with individual cables or wireless connections

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10
Q

What are the benefits of star topology?

A

1) If one cable fails, it only brings down the machine or network segments related to the point of failure
2) Scalability
3) Easy to troubleshoot

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11
Q

What is a device at the center of the star topology network?

A

It’s a hub/switch

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12
Q

What are the drawbacks of the star topology?

A

1) If the circuit hub fails, everything else does

2) There’s a high total installation cost due to the number of cables

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13
Q

Name two extensions of the ring topology

A

Wireless and point-to-point

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14
Q

Define the Ring topology

A

In the ring topology, each computer is directly connected to other computers within the same network

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15
Q

What are the advantages of ring topology?

A

1) Cable faults are easily located, making troubleshooting easier.
2) Ring networks are moderately easy to install.

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16
Q

Disadvantages of ring topology?

A

1) Expansion to the network can cause network disruption

2) A single break in the cable can disrupt the entire network.

17
Q

Describe the mesh topology

A

In mesh, there’s a path from every machine to every other machine

18
Q

Advantages of mesh topology

A

1) Redundant connections make a good backup - for each of n locations/hosts, we’ve got n*(n - 2)/2 connections
2) The network can be expanded without disruption to current users.

19
Q

Disadvantages of mesh topology

A

1) Pricey cabling solution

2) Complicated implementation

20
Q

Name 5 factors to consider when choosing a network topology

A

1) cost
2) ease of installation
3) ease of maintenance
4) fault tolerance req.
5) security

21
Q

What is a LAN? How does LAN group resources?

A

LAN = local area network

1) it’s restricted to a particular geo location s.a. an office building, home office, etc
2) to make admin easier, often it’s best to split up big LAN into logical zones = workgroups
- LAN is a logical grouping of resources

22
Q

Disadvantages of workgroups

A

1) you must be physically connected to workgroup’s LAN to access its resources
3) You can’t get from one LAN to another and use its server data (you connect LANs with a router)

23
Q

What is a WAN?

A

WAN = wide area network; internet is one of them!

  • WANs typically employ both routers and public links
  • WANs usually need a router port or ports
  • WANs span large geographic areas - and/or link disparate locales
  • WANs utilize public or private data transport media s.a. phone lines
24
Q

Internet is a kind of WAN that ….

A

connects a bunch of intranets; hosts use hardware addressing to chat with other hosts on LAN and logical addressing to communicate with hosts on other LANs

25
Q

Give me a name of a WAN topology of four letters that you didn’t know was a topology to begin with

A

MPLS = Multiprotocol Label Switching - is a kind of protocol where data is assigned labels when it reaches an MPLS network, and data is forwarded based those labels - through virtual links, I’d say

26
Q

What are the advantages of MPLS?

A

1) flexibility in physical layout
2) prioritization of data
3) redundancy in case of link failure
4) one to many connections

27
Q

You need a network that provides centralized authentication for your users. What logical topology would you use?

A

Client-server

28
Q

You need a topology that is scalable to use in your network. What would you install?

A

Star

29
Q

Which physical topology has the most connections AND is the least popular option for LANs?

A

Mesh…

30
Q

What type of WAN technology uses labels which enables priority of voice through the network?

A

MPLS

31
Q

How safe are peer-to-peer networks?

A

Not really safe

32
Q

Contrast LANs and WANs in 3 ways

A

1) WANs require a router
2) WANs cover larger geo areas
3) WANs can utilize either private or public data transport

33
Q

Name 3 advantages of client-server over peer-to-peer logical network topology

A

1) Easier maintenance
2) Greater organization
3) Tighter security

34
Q

You have a network with multiple LANs and want to keep them separate but still connect them together so they can all get to the internet. Which of the following is the best solution

A

INSTALL A ROUTER!

35
Q

What type of topology gives you a distant connection between two routers s.t. there is one communication path

A

Point-to-point