Revision De Conceptos

CCNA 1 Championship

Cisco UNACHNetworking Academy

Binary, Binary, Hex, and Hex, and

SubnettingSubnetting

NetworkNetworkConceptsConcepts

Electricity Electricity andand

ComponentsComponentsCablingCabling Odds andOdds and

EndsEnds

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

600 600 600 600

700 700 700 700 700

600

What is 1965 in hex?

7AD

Binary, Hex, and Subnetting100

Binary, Hex, and Subnetting200

What is 186 in binary?

10111010

What are networks with a subnet mask of .224 incremented by? (i.e. 255.224.0.0)

.32

Binary, Hex, and Subnetting300

Binary, Hex, and Subnetting400

When the subnet mask of 255.255.255.248 is assigned to a Class A address, how many usable IP addresses are available for hosts?

6

What network is host 10.228.10.60 /16 on?

DAILY DOUBLEDAILY DOUBLEDAILY DOUBLEDAILY DOUBLE

10.228.0.0

Binary, Hex, and Subnetting500

255.255.255.192 /26

If you had a Class B address and needed 1,000 subnets, what mask would need to be applied? What is the / notation?

Binary, Hex, and Subnetting600

255.255.255.224

A small company has a Class C network license and needs to create six subnets, each subnet capable of accommodating at least 20 hosts. What subnet mask would be used?

Binary, Hex, and Subnetting700

Network Concepts100

What are some key features of the TCP/IP Transport layer?

• uses TCP and UDP protocols• uses flow control through sliding

windows• provides reliability through sequence

numbers

Network Concepts200

What 3 protocols are used by e-mail to transfer data between clients and servers and between servers?

• POP3• IMAP4• SMTP

Network Concepts300

Name 3 routed protocols. Name 3 routing protocols.Which are Cisco’s proprietary routing protocols?

• Routed—IP, IPX, DecNet, XNS, Appletalk• Routing—RIPv1, RIPv2, IGRP, EIGRP,

OSPF, BGP, IS-IS• IGRP, EIGRP

Network Concepts400

Name 3 things that can cause a network condition called “broadcast radiation.”

• video over IP applications• ARP requests• RIP updates

Network Concepts500

What does the Spanning Tree Algorithm resolve?

switching loops

Network Concepts600

How does a device on a network find the MAC address of another device AND which term describes an ARP response by a router on behalf of a requesting host?

•It broadcasts an ARP request.

•proxy ARP

Network Concepts700

What are the 4 encapsulation units and their associated OSI model layers?

Segments—Transport LayerPackets—Network LayerFrames—Data Link LayerBits—Physical Layer

Electricity and Components100

Describe Coulomb's law.

• Opposite charges react to each other with a force that causes them to be attracted to each other (positive to negative)

• Like charges react to each other with a force that causes them to repel each other (negative to negative)

Electricity and Components 200

What are some good conductors of electricity? (Name at least 3.)

Copper, silver, gold, solder

Electricity and Components 300

Describe Direct Current.

• DC always flows in the same direction.• DC voltages always have the same

polarity. • The flow of electrons is always from a

negatively charged source to a positively charged source.

Electricity and Components 400

Describe Alternating Current.

• AC flows in one direction.

• AC voltage reverses its polarity, so that the positive terminal becomes negative, and the negative terminal becomes positive.

Electricity and Components 500

Describe a MAC address.Describe an IP address. Which octet describes the network portion of an address?

• MAC--twelve hexadecimal digits (48 bits)• MAC—6 digits OUI, 6 digits vendor

assigned• IP—32 dotted decimal format

• Class A, Nhhh; Class B, NNhh; Class C, NNNh

Electricity and Components 600

Which wireless standard increased transmission capabilities to 11 Mbps?

• 802.11b

Electricity and Components 700

What command will test the internal loopback of a node?

ping 127.0.0.1

Cabling100

During cable testing, what two things are used to calculate the information carrying capacity of a data cable?

• attenuation• analog bandwidth

Cabling200

Where should the highest capacity Ethernet technologies be implemented in a network? (List 3.)

• between backbone switches• between enterprise server and switch• on aggregate access links

Cabling300

What networking media offers high security, long distance, and is unaffected by electrical noise?

fiber

Cabling400

How does adding more hubs to a network (and connecting workstations to those hubs) affect collision domains?

The size of the collision domain is extended.

Cabling500

Which three things are common to all 100BASE technologies?

• frame formatting• timing• multi-part encoding

Cabling600

What type of cable is used between a terminal and router’s console port?Between a switch and a switch?Between a workstation and a hub?

• rollover• crossover• straight-through

Cabling700

In 10Base2, describe what the 10 represents, then what Base represents, then what 2 represents.

• 10 Mbps• baseband signaling• 200 meters (185)

Odds and Ends100

file size and bandwidth of link

What is two things are required to compute the estimated time it would take to transfer data from one location to another?

Odds and Ends200

How long would it take a 10MB file to be sent over a T1 connection?

52 secs (T=S/BW)

Odds and Ends300

What does 1000BASE-T use to accomplish gigabit speeds on Cat 5e cable?

the use of all four pairs of wires in full-duplex mode, simultaneously

Odds and Ends400

What kind of wiring is Ethernet considered the standard for? (Think of standards.)

• inter-building• vertical• horizontal

Odds and Ends500

An ISDN Basic Rate Interface (BRI) is composed of how many signaling channels? How many data channels?

1 signal channel (Delta channel) 16 kpbs2 data channels (Bearer channels) 64 kpbs each

Odds and Ends600

What devices are associated with the Physical layer, the Data Link layer, and the Network layer of the OSI model?

• Physical layer—patch panels, connectors, media, hubs, repeaters

• Data link layer—NICs, switches, bridges• Network layer--routers

TFTP and FTP

If a network administrator needed to download files from a remote server, which protocols could the administrator use to remotely access those files?

Odds and Ends700