Chapter 1 - Sheet1

Question 1

List the 7 common topologies

Answer 1

Bus, star, ring, mesh, point-to-point, point-to-multipoint, hybrid

Question 2

Physical topologies describe what?

Answer 2

Human-visible arrangement and connection of hosts. What the “humans see”

Question 3

Logical topologies describe what?

Answer 3

How data moves through the network. What the “equipment sees”

Question 4

Describe a bus topology

Answer 4

two distinct and terminated ends, with each of its computers connecting to one unbroken cable running its entire length

Question 5

What are the advantages of the bus topology?

Answer 5

Easy to install, inexpensive b/c it doesn’t require as much cable

Question 6

What are the disadvantages of the bus topology?

Answer 6

Difficult to troubleshoot/change/move. Everything is connected, so it doesn’t excel at fault tolerance.

Question 7

Describe star topology

Answer 7

A star topology’s computers are connected to a central point with their own individual cables or wireless connections. You’ll often find that central spot inhabited by a device like a hub, a switch, or an access point.

Question 8

What are the advantages of the star topology?

Answer 8

New stations can be added easily and quickly; A single cable failure won’t bring down the entire network.;It is relatively easy to troubleshoot.

Question 9

What are the disadvantages of the star stopology?

Answer 9

If the central device fails (the switch/hub/etc), the entire network goes down.;It has a single point of failure (the hub or other central device).

Question 10

Describe ring topology

Answer 10

In this type of topology, you’ll find that each computer is directly connected to other computers within the same network

Question 11

What are the advantages of the ring topology?

Answer 11

None listed…

Question 12

What are the disadvantages of the ring topology?

Answer 12

Difficult to troubleshoot/change/move. Everything is connected, so it doesn’t excel at fault tolerance. Expensive to install (more cables)

Question 13

Describe mesh topology

Answer 13

In this type of topology, you’ll find that there’s a path from every machine to every other one in the network.

Question 14

What are the advantages of the mesh topology?

Answer 14

Most tolerant of faults; lowest potential for collisions;

Question 15

What are the disadvantages of the mesh topology?

Answer 15

Expensive, even for small networks; complicated to manage;

Question 16

Describe point-to-point topology.

Answer 16

As its name implies, in a point-to-point topology you have a direct connection between two routers, giving you one communication path. The routers in a point-to-point topology can either be linked by a serial cable, making it a physical network, or be far apart and connected only by a circuit within a Frame Relay or MPLS network, making it a logical network.

Question 17

What are the advantages of point-to-point topology?

Answer 17

None listed…

Question 18

What are the disadvantages of point-to-point topology?

Answer 18

Not very scalable;

Question 19

Describe point-to-multipoint topology.

Answer 19

Again as the name suggests, a point-to-multipoint topology consists of a succession of connections between an interface on one router and multiple destination routers—one point of connection to multiple points of connection. Each of the routers and every one of their interfaces involved in the point-to-multipoint connection are part of the same network.

Question 20

Describe hybrid topology

Answer 20

a combination of two or more types of physical or logical network topologies working together within the same network.

Question 21

Define LAN

Answer 21

local area network (LAN) is usually restricted to spanning a particular geographic location such as an office building, a single department within a corporate office, or even a home office. Made up of network segments.

Question 22

Define WAN

Answer 22

WAN networks are what we use to span large geographic areas and truly go the distance. Like the Internet, WANs usually employ both routers and public links, so that’s generally the criteria used to define them.

Question 23

What are 5 ways WANs differ from LANs?

Answer 23

NN WANs usually need a router port or ports. NN WANs span larger geographic areas and/or can link disparate locations. NN WANs are usually slower. NN We can choose when and how long we connect to a WAN. A LAN is all or nothing— our workstation is either connected permanently to it or not at all, although most of us have dedicated WAN links now. NN WANs can utilize either private or public data transport media such as phone lines.

Question 24

A _____ is used to connect a group of _____ together, and a _____ is used to connect various _____ together.

Answer 24

A LAN is used to connect a group of hosts together, and a WAN is used to connect various LANs together.

Question 25

What are the three primary LAN topologies?

Answer 25

Bus, ring, and star

Question 26

What common WAN topology often results in multiple connections to a single site (leading to a high degree of fault tolerance) and has one-to-many connections?

Answer 26

Multiprotocol Label Switching (MPLS)

Question 27

What is the term for a device that shares its resources with other network devices?

Answer 27

Server

Question 28

What network model draws a clear distinction between devices that share their resources and devices that do not?

Answer 28

Client/Server

Question 29

Which network topology or connection type can be implemented with only two endpoints?

Answer 29

Point-to-point

Question 30

What device is an example of an Ethernet technology implemented as a star topology?

Answer 30

Hub

Question 31

Define MPLS

Answer 31

MultiProtocol Label Switching. MPLS is a switching mechanism that imposes labels (numbers) to data and then uses those labels to forward data when the data arrives at the MPLS network

Question 32

What does WAN stand for?

Answer 32

Wide Area Network

Question 33

Will a computer that shares no resources most likely be connected to the backbone or to a segment?

Answer 33

Segment

Question 34

Which LAN topology is characterized by all devices being daisy-chained together with the devices at each end being connected to only one other device?

Answer 34

Bus topology