CCNA 1.0 - Network Fundamentals

Question 1

What are FLPs?

Answer 1

Fast Link Pulses - signals that indicate what speed/duplex an interface is capable of, used in autonegotiation

Question 2

If one side of a link uses autonegotiation and the other does not, what speed will be used on the link?

Answer 2

The non-autonegotiating side’s speed.

Question 3

If one side of a link uses autonegotiation and the other does not, what duplex setting will be used if the speed is 10 or 100?

Answer 3

half duplex

Question 4

If one side of a link uses autonegotiation and the other does not, what duplex setting will be used if the speed is 1000 or faster?

Answer 4

full duplex

Question 5

What do hubs do with FLPs?

Answer 5

Nothing. FLPs are not forwarded or generated by hubs.

Question 6

How do the commands “speed auto” and “duplex auto” appear in the show run command?

Answer 6

They don’t - those are defaults, which by default aren’t shown.

Question 7

What command disables MDIX?

Answer 7

no mdix auto

Question 8

True or false: auto MDIX needs to be enabled on both ends of a link in order for it to work correctly.

Answer 8

False - either end can detect the problem and enable MDIX

Question 9

What command resets an interface to default settings?

Answer 9

default interface (int-id)

Question 10

If line/protocol status is admin down and down, interface status will be…

Answer 10

disabled

Question 11

If line/protocol status is down and down, interface status will be…

Answer 11

notconnect

Question 12

If line/protocol status is up and down, interface status will be…

Answer 12

notconnect

Question 13

If line/protocol status is down and down(err-disabled), interface status will be…

Answer 13

err-disabled

Question 14

If line/protocol status is up and up, interface status will be…

Answer 14

connected

Question 15

True or false: links that are showing up/up can still have duplex mismatch issues.

Answer 15

True

Question 16

Late collisions can be indicative of…

Answer 16

duplex mismatch

Question 17

If CRC errors grow but collisions do not, the issue could be…

Answer 17

interference on the cable

Question 18

Watts supplied by:

PoE
PoE+
UPoE
UPoE+

Answer 18

15
30
60
90

Question 19

PoE/+ uses ___ pairs of wires, while UPoE/+ uses ____.

Answer 19

2, 4

Question 20

What are the topological differences between:

1) E-Line
2) E-LAN
3) E-Tree

Answer 20

1) point-to-point
2) Full mesh
3) hub-and-spoke, partial mesh, point-to-multipoint

Question 21

What is a wireless “station”?

Answer 21

an end-user device

Question 22

What exactly is an SSID?

Answer 22

A text string in a beacon frame

Question 23

What are two ways a station can find a BSS?

Answer 23

passive scanning (passive) or a probe request (active)

Question 24

What does a station send to join a BSS?

Answer 24

An association request

Question 25

What does a BSS have a wired connection to?

Answer 25

A distribution system

Question 26

What is an extended service set?

Answer 26

Multiple APs offering the same SSID over different BSSIDs

Question 27

When a stations roams from one AP to another in an ESS, what does it send to the new AP?

Answer 27

a reassociation request

Question 28

On an AireOS wireless controller, what type of interface maps a WLAN to a VLAN?

Answer 28

a dynamic interface

Question 29

When a WLAN is created, what two things are bound together in the controller?

Answer 29

a VLAN and an SSID

Question 30

How many WLANs can be configured on a Cisco controller?

Answer 30

512

Question 31

The term "Cisco AP" refers to what type of AP, as opposed to what other type of AP? What types of uplinks do they need to the DS?

Answer 31

Lightweight, autonomous Access, trunk

Question 32

Which (software) interface on a WLC is used to establish CAPWAP tunnels?

Answer 32

the management interface

Question 33

Which (software) interface on a WLC is used to relay DHCP requests, perform client authentication, etc.?

Answer 33

the virtual interface

Question 34

If the physical port is used, which WLC (software) interface is used for out-of-band management?

Answer 34

the service interface

Question 35

True or false: WLCs can support either PAgP or LACP.

Answer 35

False - neither. WLCs only support static LAG.

Question 36

What DHCP option tells APs about their WLC?

Answer 36

Option 43. This is not necessary if the WLC is in the same subnet as the AP, as the AP will send a CAPWAP discovery message to which the WLC will reply.

Question 37

What are the three main 802.11 message types?

Answer 37

Management, Control, and Data

Question 38

10gig ethernet can reach __ meters over ___ cable; and ___ meters over ____ cable.

Answer 38

55, Cat 6; 100, Cat 6A