ITESS 2 CHAPTER 3

1
How many bits are in an IP address?
16
64
> 32
48

2
Which of the following devices is used to segment a network into different broadcast domains?
switch
active hub
bridge
> router

3
Which three of the following items can a DHCP server provide to a host computer? (Choose three.)
> subnet mask
MAC address
> default gateway
> IP address
DHCP server address

4
Which list contains important considerations when selecting a NIC to use on a network?
type of network, type of RAM, type of system bus
type of media, type of system bus, type of RAM
> type of network, type of media, type of system bus
type of system bus, processor speed, type of media

5
What is the most commonly used architecture in Ethernet LANs?
bus
> star
mesh
ring

6
Which of the following statements best describes DNS?
DNS servers are used to map an IP address to a physical address.
> DNS servers are used to map a name to an IP address.
DNS servers are used to configure logical address information for host computers.
DNS servers are used to translate from private addresses to public addresses.

7
Which of the following options correctly describes APIPA?
APIPA allows a privately addressed host to assign itself a public IP address in order to access a remote network.
> APIPA enables a computer to assign itself an IP address if it cannot contact a DHCP server.
APIPA is fault-tolerant feature that allows a server to mirror another server on a local network.
APIPA enables a computer to translate domain names into IP addresses if it cannot contact a DNS server.

8
What are the two most common wireless networking technologies? (Choose two.)
> radio frequency
microwave
laser
> infrared
satellite wavelength

9
Which term refers to the path that signals take from one point on a network to another?
address resolution
> logical topology
dynamic host configuration
physical topology

10
What is a major disadvantage of the bus topology?
It is expensive.
It requires a lot of cabling.
> A break in any one part of the cable brings down the entire network.
All computers must be placed in a straight line.

11
What is the purpose of the twists in Category 5/5e UTP cable?
to prevent the cable from breaking
to make the cable easier to install and terminate properly
to make the cable cheaper to produce
> to limit signal degradation caused by cross talk

12
Which two of the following statements accurately describe a default gateway? (Choose two.)
A default gateway is used when a host transfers data to another host on the same network segment.
> A default gateway is the IP address assigned to the near-side router interface.
> A default gateway is the IP address assigned to the near-side switch interface.
A default gateway is used when a host transfers data to a host on another network segment.

13
What are three options for assigning logical addresses to hosts? (Choose three.)
> static
> dynamic
negotiation
> automatic
holistic

14
Which list indicates advantages associated with fiber-optic cable?
capable of running long distances, inexpensive to install, not susceptible to electromagnetic interference
not susceptible to electromagnetic interference, expensive to install, lower data rates
> not susceptible to electromagnetic interference, higher data rates, capable of running long distances
lower data rates, inexpensive to install, capable of running long distances

15
What is the function of a DHCP server?
It stores websites that are used frequently.
> It dynamically assigns IP addresses to hosts.
It determines the subnet mask of a network.
It serves as a "first line of defense" firewall.

16
Which data link layer device can segment a network into different collision domains?
a router
> a switch
a gateway
a transceiver

17
What are three important considerations when selecting a NIC? (Choose three.)
> network type
operating system
> system bus
> network media
number of network users

18
Which two devices are at the core of wireless communications? (Choose two.)
satellites
light emitting diodes
> transmitters
> receivers
modulators

19
What is the main function of the DNS?
to scan the network for viruses
> to translate computer names to their corresponding IP addresses
to assign IP addresses to nodes on the network
to provide names to all the nodes on a network

20
What are two advantages of using dynamic address assignment instead of manual address assignment? (Choose two.)
> On a large network, manually assigning addresses can be very time consuming.
Manual address assignment requires network administrators to understand physical addressing.
Dynamic address assignment can help segment a large network.
> Manual address assignment requires network administrators to understand logical addressing.

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