Introducing LANs

Question 1

Regarding LANs, which statement is correct?

A. LANs use facilities that an ISP or carrier provides.

B. LANs span over a large geographical area.

C. LANs span over a small geographical area.

D. LANs consist of multiple WANs.

Answer 1

C. LANs span over a small geographical area.

Question 2

Which two devices are responsible for forwarding data to endpoint devices based on network information? (Choose two.)

A. mobile phone

B. switch

C. server

D. router

E. IP phone

Answer 2

B. switch

D. router

Question 3

What is the main purpose of a switch?

A. To forward IP packets.

B. To expand local network across large geographic area.

C. To be able to combine micro-segments into one large segment.

D. To forward frames only on segments that need them.

Answer 3

D. To forward frames only on segments that need them.

Question 4

Which switch feature allows switches to operate at a high speed of 10 Gbps?

A. full duplex

B. half duplex

C. large frame buffers

D. fast internal switching

Answer 4

D. fast internal switching

Question 5

Which switch characteristic can accommodate network designs that feature fewer users per segment?

A. high port density

B. large frame buffers

C. port speed

D. fast internal switching

E. low per-port cost

Answer 5

E. low per-port cost

Question 6

What are the three functions of a switch? (Choose three.)

A. Switches have high speed and support single port speeds.

B. Switches operate at the link layer of the TCP/IP protocol suite.

C. Switches operate at the network layer of the TCP/IP protocol suite.

D. Switches selectively forward individual frames.

E. Switches selectively forward individual packets.

F. Switches have many full-duplex ports to segment a large LAN into many smaller segments.

Answer 6

B. Switches operate at the link layer of the TCP/IP protocol suite.

D. Switches selectively forward individual frames.

F. Switches have many full-duplex ports to segment a large LAN into many smaller segments.

Question 7

What are the two typical hosts or endpoints on a LAN? (Choose two.)

A. switches

B. routers

C. servers

D. laptops

E. firewalls

Answer 7

C. servers

D. laptops

Question 8

Which devices or protocols provide a channel for data to travel from one point to another in the network?

A. hosts

B. interconnections

C. network devices

D. TCP

Answer 8

B. interconnections

Question 9

Which statement regarding switch characteristics is correct?

A. A generic CPU is too slow for forwarding traffic in a switch.

B. A generic ASIC is too slow for forwarding traffic in a switch.

C. A generic CPU is too fast for forwarding traffic in a switch.

D. A switch has smaller frame buffers to avoid network congestion.

Answer 9

A. A generic CPU is too slow for forwarding traffic in a switch.

Question 10

Which advantage does a switch bring to a LAN environment?

A. combines segments together

B. breaks up segments

C. forces full-duplex on all ports

D. allows only one way communication on a segment

Answer 10

B. breaks up segments

Question 11

What are the two defining characteristics of a LAN? (Choose two.)

A. higher data transfer rates in contrast to WAN

B. lower data transfer rates in contrast to WAN

C. smaller geographic area in contrast to WAN

D. larger geographic area in contrast to WAN

E. need for leased telecommunication lines

Answer 11

A. higher data transfer rates in contrast to WAN

C. smaller geographic area in contrast to WAN