ICND1 - Part 3 Quiz

Question 1

Hubs create problems in that they cause collisions since they simply regenerate the signal and flood it out all ports. What technology must devices use when connected to a hub to reduce collisions?

a. CSMA/CA
b. CSMA/CT
c. CSMA/CD
d. CDMA/CD

Answer 1

c. CSMA/CD

Question 2

Bridges increase collision domains.

a. True
b. False

Answer 2

a. True

Question 3

Routers increase collision domains.

a. True
b. False

Answer 3

a. True

Question 4

Select three answers that pertain to collision domains. (Choose 3)

a. LAN switches place each separate interface into a separate collision domain.
b. LAN bridges, which use different logic than switches, placed each interface into a separate collision domain.
c. Routers place each LAN interface into a separate collision domain.
d. LAN hubs do not put each interface into separate collision domains.

Answer 4

a. LAN switches place each separate interface into a separate collision domain.
c. Routers place each LAN interface into a separate collision domain.
d. LAN hubs do not put each interface into separate collision domains.

Question 5

Full duplex interfaces on a switch would not have collisions at all.

a. True
b. False

Answer 5

a. True

Question 6

What is a broadcast domain?

a. A set of networks in which a broadcast is delivered.
b. A set of devices in which a broadcast is delivered.
c. A set of switches in which a broadcast is delivered.
d. A set of routers in which a broadcast is delivered.

Answer 6

b. A set of devices in which a broadcast is delivered.

Question 7

A LAN consists of all devices in the same collision domain.

a. True
b. False

Answer 7

b. False

Question 8

Given two VLANs on a single switch, what must be necessary for the two devices, one on each VLAN to communicate with each other? (Choose 2)

a. Nothing, the switch can handle inter-vlan communication.
b. A bridge is required.
c. A hub is required.
d. A wireless access point is required.
e. A router is required.
f. A multi-layer switch is required.

Answer 8

e. A router is required.

f. A multi-layer switch is required.

Question 9

VLANs break up a switch into multiple broadcast domains.

a. True
b. False

Answer 9

a. True

Question 10

Routers by default, forward LAN broadcasts on their Ethernet interfaces.

a. True
b. False

Answer 10

b. False

Question 11

What are valid descriptions of a two-tier campus design? (Choose 3)

a. Generally consists of an access layer and distribution layer.
b. Can consist of a star, full mesh, partial mesh, bus, or ring topology.
c. The distribution layer creates a partial mesh between devices for redundancy.
d. The two-tier design normally consists of a partial mesh at the distribution layer and a star design at the access layer.
e. The two-tier design is no longer used in today’s networks.

Answer 11

a. Generally consists of an access layer and distribution layer.
c. The distribution layer creates a partial mesh between devices for redundancy.
d. The two-tier design normally consists of a partial mesh at the distribution layer and a star design at the access layer.

Question 12

What additional layer does the three-tier campus design have compared to the two-tier design?

a. Access layer
b. Distribution layer
c. WAN layer
d. Edge layer
e. Link layer
f. Security layer
g. Core layer

Answer 12

g. Core layer

Question 13

Any group of nodes that connect with more links than a star topology is typically called a mesh.

a. True
b. False

Answer 13

a. True

Question 14

Which standard is the Ethernet standard from IEEE?

a. 802.1D
b. 802.11
c. 802.3
d. 802.1x

Answer 14

c. 802.3

Question 15

Which of the following should be considered when choosing an Ethernet standard? (Choose 3)

a. Cost of cabling and switch hardware.
b. The duplex required on the network.
c. The maximum distance allowed between devices when using that standard/cabling.
d. The protocols supported by the cable being used.
e. The speed.
f. POTS phones usage.

Answer 15

a. Cost of cabling and switch hardware.
c. The maximum distance allowed between devices when using that standard/cabling.
e. The speed.

Question 16

What is a wireless LAN controller?

a. A device that forwards data between the wired and wireless LAN.
b. A device that controls and manages all AP functions.
c. A device that controls the LAN from a wireless device and enables the engineer to easily configure and monitor other various devices on the network.
d. A software package that enables the control of wireless networks and their passwords.

Answer 16

b. A device that controls and manages all AP functions.

Question 17

A LAN includes all devices in the same _________ domain.

a. Collision
b. Broadcast
c. Wireless
d. Local
e. VLAN

Answer 17

b. Broadcast

Question 18

What are three reasons to implement VLANs? (Choose 3)

a. To reduce RAM usage on each device that receive each broadcast frame.
b. To reduce CPU usage on each device that receive each broadcast frame.
c. To improve security for hosts that send sensitive data by keeping those hosts on a separate VLAN.
d. To create less flexible designs that group users by department that make it more difficult for changes to be made.
e. To reduce the workload of STP by limiting a VLAN to a single access switch.
f. To increase the number of hosts receiving copies of frames from the switch.

Answer 18

b. To reduce CPU usage on each device that receive each broadcast frame.
c. To improve security for hosts that send sensitive data by keeping those hosts on a separate VLAN.
e. To reduce the workload of STP by limiting a VLAN to a single access switch.

Question 19

Why is VLAN tagging used on trunk links? (Choose the best answer)

a. To identify networks traversing the switch.
b. To identify packets with a specific VLAN.
c. To identify frames with their associated VLAN by using the VLAN ID header.
d. To identify other trunks and their VLANs.

Answer 19

c. To identify frames with their associated VLAN by using the VLAN ID header.

Question 20

When trunking, both ISL and 802.1Q both tag each frame with a VLAN.

a. True
b. False

Answer 20

a. True

Question 21

A maximum of 4000 VLANs are possible on a switch.

a. True
b. False

Answer 21

b. False

Question 22

What is the extended range of VLANs?

a. 1 – 4000
b. 1 – 4094
c. 1 – 4096
d. 1006 – 4000
e. 1006 – 4096
f. 1006 – 4094

Answer 22

f. 1006 – 4094

Question 23

What is the concept of “Router on a stick”.

a. Passing multiple VLANs over several physical interfaces.
b. Passing multiple VLANs over several switches.
c. Passing multiple VLANs over one physical interface between a router and switch.
d. None of the above

Answer 23

c. Passing multiple VLANs over one physical interface between a router and switch.

Question 24

What is a good reason to use a “show vlan brief” command? (Word this better)

a. To see VLANs on the switch assigned to or not assigned to interfaces.
b. To see all VLANs being trunked on the switch.
c. To see all trunked interfaces and their VLANs.
d. None of the above.

Answer 24

a. To see VLANs on the switch assigned to or not assigned to interfaces.

Question 25

VLAN Trunking Protocol or VTP has three primary modes, what are they? (Choose 3) a. Client Mode b. Invisible Mode c. Auto Mode d. Server Mode e. Translucent Mode f. Transparent Mode

Answer 25

a. Client Mode d. Server Mode f. Transparent Mode

Question 26

If a switchport is set to dynamic desirable mode, what does this indicate? a. The switchport will passively wait to receive trunk negotiation messages, at which point the switch will respond and negotiate whether to use trunking. b. The switchport will initiate negotiation messages and respond to negotiation messages to dynamically choose whether to start using trunking. c. The switchport will always act as an access port. d. The switchport will always act as a trunk port.

Answer 26

b. The switchport will initiate negotiation messages and respond to negotiation messages to dynamically choose whether to start using trunking.

Question 27

How can the current administrative mode on a switchport be seen? a. Use the show interfaces f0/1 switchport command. b. Use the show vlan brief command. c. Use the show interfaces trunking command. d. None of the above.

Answer 27

a. Use the show interfaces f0/1 switchport command.

Question 28

On a switchport configured for both data and voice vlans, what does the voice vlan act as? a. A trunk, tagging voice traffic as 802.1Q traffic. b. A access port, tagging data traffic as isl traffic. c. A trunk, tagging voice traffic as isl traffic. d. A trunk, tagging data as 802.1q traffic.

Answer 28

a. A trunk, tagging voice traffic as 802.1Q traffic.

Question 29

If a port is listed as down/down, what does this generally indicate? a. No cable, bad cable, bad pinouts, speed mismatch. b. Duplex mismatch. c. UTP instead of STP was used causing port connectivity problems. d. The port is expecting to be trunked but is in access mode, causing connectivity problems.

Answer 29

a. No cable, bad cable, bad pinouts, speed mismatch.

Question 30

If the speed of a switchport was sensed at 10 Mbps without IEEE autonegotiation, what duplex should be set automatically? a. Full Duplex b. Half Duplex c. Auto

Answer 30

b. Half Duplex

Question 31

What is a runt? a. A frame that exceeded the maximum frame size requirement of 1518 bytes. b. A frame that did not pass the FCS math. c. A frame that did not meet the minimum frame size requirement of 64 bytes. d. A frame that was too small to be considered as voice traffic.

Answer 31

c. A frame that did not meet the minimum frame size requirement of 64 bytes.

Question 32

How can a switchport be recovered from an err-disabled state? a. It will recover on it’s own. b. Issue a shutdown and no shutdown. c. Issue a restart. d. Issue a reload. e. Issue a recover.

Answer 32

b. Issue a shutdown and no shutdown.

Question 33

Show mac address-table shows the current MAC table entries and their associated VLANs. a. True b. False

Answer 33

a. True

Question 34

How can I see if a VLAN is currently shutdown? (Choose 3) a. Issue a show vlan brief. b. Issue a show interfaces trunk. c. Issue a show vlan shutdown. d. Issue a show vlan status. e. Issue a show run. f. Issue a show ip int br

Answer 34

a. Issue a show vlan brief. e. Issue a show run. f. Issue a show ip int br