module 6 Network design/ access layer

Question 1

Which destination address is used in an ARP request frame?

Answer 1

FFFF.FFFF.FFFF.FFFF

Question 2

Which network device can serve as a boundary to divide a Layer 2 broadcast domain?

Answer 2

Router

Question 3

Which term refers to the process of placing one message format inside another message format?

Answer 3

Encapsulation

Question 4

What is the purpose of the core layer in the Cisco hierarchical network design model?

Answer 4

High-speed backbone switching

Question 5

Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table?

Answer 5

Switch

Question 6

Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?

Answer 6

sw1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch

Question 7

What information does an Ethernet switch examine and use to build its address table?

Answer 7

Source MAC address

Question 8

Which three fields are found in an 802.3 Ethernet frame? (Choose three.)

Answer 8

1- Frame check Sequence
2- Source physical address
3-Destination physical address

Question 9

Which two devices would commonly be found at the access layer of the hierarchical enterprise LAN design model? (Choose two.)

Answer 9

1- access point
2- Layer 2 switch

Question 10

Which statement is true about broadcast and collision domains?

Answer 10

Adding a switch to a network will increase the size of the broadcast

Question 11

How much data can be encapsulated into a normal sized Ethernet frame before it is sent over the network?

Answer 11

46 to 1500

Question 12

What is the purpose of ARP in an IPv4 network?

Answer 12

To obtain a specific MAC address when IP address is known

Question 13

he process of prepending protocol information with information from another protocol is called:

Answer 13

Encapsulation

Question 14

When an Ethernet frame is sent out an interface, the destination MAC address indicates:

Answer 14

The MAC address of the device, which is on this network that will receive the Ethernet Frame

Question 15

Which Ethernet frame field indicates the beginning of an Ethernet frame?

Answer 15

Preamble and SFD

Question 16

The Ethernet protocol is at what layer of the OSI Model?

Answer 16

Layer 2 data link

Question 17

An IP address is considered what type of address:

Answer 17

Logical

Question 18

Which address does not change when a device is connected to a new network?

Answer 18

physical

Question 18

An Ethernet MAC address is considered what type of address:

Answer 18

Physical

Question 18

Which portion of an IP address uniquely identifies that device on that network?

Answer 18

Host

Question 18

Which design layer provides connectivity to devices on an Ethernet LAN?

Answer 18

Access

Question 19

Ethernet switches make their forwarding decision based on what field of the Ethernet frame?

Answer 19

Destination MAC address

Question 19

When a switch receives an Ethernet frame and the destination MAC address of that frame is not in its MAC address table, the switch will:

Answer 19

Forward the frame out all ports except in the incoming port

Question 19

Ethernet switches add entries to their MAC address table based on what field of the Ethernet frame?

Answer 19

Source MAC address

Question 20

Ethernet hubs are considered:

Answer 20

Obsolete

Question 21

The destination MAC address of an Ethernet broadcast in hexadecimal is:

Answer 21

FFFF.FFFF.FFFF.FFFF

Question 22

When an Ethernet switch receives a frame that is broadcast, it will:

Answer 22

forward the frame out all ports except the incoming port

Question 23

Host-A has an Ethernet frame to send to Host-B on the same network. Host-A knows the IP address of Host-B but not its MAC address. What message will Host-A send to determine the MAC address of Host B?

Answer 23

ARP Request

Question 24

An ARP request is sent out as:

Answer 24

a broadcast, so all devices on the same network will receive it

Question 25

Host-B receives an ARP request. Host-B will return an ARP Reply if:

Answer 25

the IP address in the ARP request matches its own IP address

Question 26

Host-A sends an ARP request and receives an ARP reply from Host-B. What is in the ARP reply that Host-A did not know and needs to communicate with Host-B?

Answer 26

Host B’s MAC address