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Cisco Technologies > Cisco R and S 1.3 - > Flashcards

Cisco R and S 1.3 - Flashcards

1
Q

Describe Unicast Communication

A

A one to one communication

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2
Q

Describe a Broadcast communication

A

When communications are between multiple computers where it goes from one sender to multiple receivers

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3
Q

Describe a multicast communication

A

A one to many communication but only if they are in a multicast group

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4
Q

What are the componenets of a Local Area network?

A

Mobile devices, PC end user workstations or Servers

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5
Q

What do switches do?

A

Provide workgroup connectivity between the hosts within a LAN segment

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6
Q

What OSI layer is a switch on?

A

Layer 2

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7
Q

What do routers do?

A

provide a means to interconnect workgroup segments of a LAN together

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8
Q

What do (WAP) do?

A

provide a means to wirelessly interconnect clients to the rest of the wired network.

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9
Q

What is a SSID?

A

Service set identifier- used to logically separate WLANs

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10
Q

What is the recommended overlap percentage of WAP (ESA) Extended service area

A

approximately 10 to 15 percent overlap to allow remote users to roam from one access point to another without losing RF connections

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11
Q

What is the recommended overlap for wireless voice networks?

A

an overlap of 15 to 20 percent is recommended.

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12
Q

What is a wireless repeater?

A

an access point that is not connected to the wired backbone and extends the coverage area of another access point.

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13
Q

What is the percentage overlap for a wireless repeater?

A

50% overlap between the access point on the backbone and the wireless repeater

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14
Q

Does a repeater have to be on the same channel as the access point connected to the wire LAN

A

yes

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15
Q

What is a wireless LAN controller?

A

a device that assumes a centralized role in the unified wireless network.

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16
Q

How many access points can be connected to a (WLC) Wireless Lan Controller?

A

up to 6000

17
Q

Describe Unicast

A

a One to One Communication in which a frame is sent from a single host addressed to a single destination.

18
Q

Describe Broadcast

A

a One to All Communication in which a frame is sent from one address to all other addresses.

19
Q

Describe Multicast

A

a One to Many Communication in which a sender addresses a specific group of devices or clients

20
Q

What is th predominate LAN protocol running at layers 1 and 2 of the OSI model?

A

Ethernet

21
Q

How many meters can the reciever and sender on LAN be apart from each other?

A

100 meters

22
Q

Describe collision domains

A

The network segments that share the same bandwidth

23
Q

What layer of the OSI model is a switch on?

A

Layer 2

24
Q

What is a switch?

A

divide a network into separate collision domains and reduce the number of devices that are competing for bandwidth

25
Q

How does a switch know where to send traffic?

A

reads the destination MAC address of the incoming frame and uses that information to forward the frame

26
Q

What are the two components of the MAC address?

A

Organizational Unique Identifier (OUI) and vendor-assigned end station address

27
Q

Can two computers have the same mac address

A

NO

28
Q

What are the two situations in which a switch floods traffic?

A

when a switch receives a frame from a host with a destination MAC address of a device that is not in its MAC address table. and when it receives a broadcast frame from a host.

29
Q

What do you call a LAN segment connected entirely of switches

A

broadcast domain.

30
Q

if a link is running full duplex is it possible for a collision domain on that link?

A

No

31
Q

What are the three different types of addressing modes IPv4 supports?

A

Unicast Addressing Mode , Multicast Addressing Mode , and Broadcast Addressing Mode

32
Q

In a ip address how many bits are in an octet?

A

8 bits

33
Q

How is a octet represented in a IPv4 address?

A

By numbers between 0 and 255

34
Q

What is the maximum data rate of CAT 5 cables

A

100mbps

35
Q

What is the maximum data rate of CAT5e cables

A

1 gbps

36
Q

What is the maximum data rate of CAT6 cables

A

10gbps

37
Q

What is the maximum data rate of CAT6a cables

A

10gbps

38
Q

What is the maximum data rate of CAT7 , and 7a

A

10gbps

39
Q

What is the maximum data rate of CAT8

A

40gbps

Cisco Technologies (4 decks)

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