CCNA1-Module 3

1 What is the difference between a wireless NIC and an Ethernet NIC?

• The Ethernet NIC operates at 100 Mbps, whereas a wireless NIC operates at 10 Mbps.
• The Ethernet NIC uses a PCI expansion slot, and a wireless NIC cannot use an expansion slot.
• The wireless NIC uses CSMA/CA, whereas a Ethernet NIC uses token passing as an access method.
• The wireless NIC associates to an access point, and an Ethernet NIC attaches to a hub or switch using a cable.*
• The Ethernet NIC attaches to a hub or a switch using only fiber cabling, and a wireless NIC attaches to a wireless antenna using air as a network medium.

2 Select the characteristics specified by 10BaseT. (Choose three.)

• twisted pair cable*
• T style connectors
• baseband transmission*
• 10 gigabits per second data rate
• 10 megabits per second data rate*
• decimal encoded data transmission

3 Which cable connectors are used to connect a cable from a router's console port to a PC? (Choose two.)

• RJ-11
• RJ-12
• RJ-45*
• DB-8
• DB-9*
• DB-10

4 Which Ethernet implementation requires the signal on the media to be boosted at a maximum distance of 100 meters?

• 10BASE2
• 10BASE5
• 100BASE-T*
• 100BASE-FX
• 1000BASE-CX

5 Refer to the exhibit. Which answer correctly identifies the pinout of the UTP cables labeled Cable A, Cable B, and Cable C?

• A=straight, B=rollover, C=crossover
• A=rollover, B=crossover, C=straight
• A=crossover, B=straight, C=straight
• A=crossover, B=straight, C=rollover*
• A=straight, B=crossover, C=rollover
• A=rollover, B=straight, C=crossover

6 Which of the following are used for data communication signals? (Choose three.)

• light patterns*
• electrical voltages*
• controlled air pulses
• mixed media impulses
• magnetized fluid wave
• modulated electromagnetic waves*

7 What are two advantages of using fiber-optic cabling instead of UTP? (Choose two.)

• lower cost
• easer to install
• allows longer distances*
• less effected by external signals *
• easier to terminate the cable ends

8 A company is converting a cabled LAN to a wireless Ethernet LAN. What must be changed on every host on the network?

• No changes are required.
• Each host will require a new IP address.
• Each host will require an appropriate NIC or adapter.*
• Each host will require that the operating system be upgraded.

9 What does UTP cable rely on to reduce signal degradation caused by EMI and RFI?

• shielding
• magnetism
• Cancellation*
• insulation
• properly grounded connections
• RJ-45 connectors

10 What are two advantages of using UTP cable in a networking environment? (Choose two.)

• is stiffer than STP
• is less expensive than fiber*
• is easier to install than coaxial *
• provides longer distances than coaxial provides
• is less susceptible to outside noise sources than fiber is

11 Which wireless standard operates in the 5 GHZ transmission range and is capable of 54 Mbps of data throughput?

• 802.11
• 802.11a*
• 802.11b
• 802.11g

12 What factors should be considered when selecting the appropriate cable for connecting a PC to a network? (Choose two.)
type of system bus
motherboard model
distance of cable run*
speed of transmission*
computer manufacturer

13 When is a straight-through cable used in a network?

• when configuring a router
• when connecting a host to a host
• when connecting a switch to a router*
• when connecting one switch to another switch

14 What type of cable is used to make an Ethernet connection between a host and a LAN switch?

• console
• rollover
• crossover
• straight-through*

15 Refer to the exhibit. What type of cable connects the two routers together without any intermediary device?

• console
• rollover
• Crossover*
• straight-through