Kwan, a fifth-grade teacher, has been learning about computers but does not know
much about networking. He found a hub in the supply closet and decided to create a
small network in his classroom consisting of a file/application server, 10 relatively new
computers, and a printer. The students often complain that the computers are slow, but
one student blames it on the network. What can Kwan do to eliminate complaints?
Upgrade to more powerful PCs
Incorrect. Upgrading to more powerful computers will not improve network performance
because the hub is the slowest device on the network. Hubs employs older technology,
operate at 10/100 Mbps, and share the bandwidth with all the devices connected to it.
The solution is to replace the hub with a switch. - ANS-Replace the hub with a switch
You want to setup a separate network at home that is accessible from the internet. You
want it to be isolated from your personal network, so you lease an IPv6 address from
the ISP. When you configure the interface IDs of the devices on the network, which bits
in the IPv6 address will you be modifying?
The first 48 bits of the IPv6 address
Incorrect. The first 48 bits make up the global routing prefix. The last (rightmost) 64 bits
make up the interface ID. A simplistic analogy is to say that the interface ID of an IPv6
address is equivalent to the host portion of an IPv4 address. - ANS-The last 64 bits of
the IPv6 address
Which of the following devices are most commonly used to connect a LAN to an ISP for
broadband services? (Select TWO.) - ANS-Cable modem
Correct. The cable modem is the hardware device used to connect the local area
network (LAN) to a cable Internet service provider (ISP). Cable is a broadband
technology transported over a coaxial cable that can provide high-speed Internet, TV,
and voice via a single cable connection.
DSL modem
Correct. A DSL modem is the hardware device used to connect the local area network
(LAN) to an Internet service provider (ISP). DSL is a broadband technology transported
over copper POTS (plain old telephone service) cable that can provide high-speed
Internet alone (SDSL) or Internet combined with voice (ADSL, VDSL).
, A small company has a few users that are spending too much time on specific social
media web sites; this is affecting their productivity at work. The manager asks if it is
possible to limit access to those sites.Which of the following will satisfy the request
while not limiting access to other websites?
Implement MAC filtering on the router for the PCs that are accessing the sites.
Incorrect. MAC filtering will keep the PCs from connecting to the network entirely. MAC
filtering is used to allow or deny network hosts access to the private LAN based on the
MAC address of the host.
Configure a firewall and add the web sites the users are visiting to the whitelist.
Incorrect. The whitelist is configured on the network firewall; however, a whitelist
assumes all sites are blocked with the exception of the sites added to the whitelist. -
ANS-Configure a proxy server as an internet appliance to limit access to the web sites.
A client contacted you to request your help in researching and supplying the hardware
necessary to implement a SOHO solution at his new home-based business.Which of
the following SOHO router features will simplify IP address configuration on the private
network for both wired and wireless clients?
Multi-port switch
Incorrect. Most SOHO routers include multiple network device functionality in addition to
routing and include several wired Ethernet ports. These ports simplify connecting wired
hosts to the network but do not simplify assigning IP address information to host
devices. - ANS-DHCP server
Correct. An integral feature of a SOHO router is the DHCP (Dynamic Host Configuration
Protocol) server, which automatically assigns IP address information to network clients
with either wired or wireless connections. The host device is configured to obtain IP
address information automatically.
You recently bought a new router, modem, and switch to create a wired network at
home containing six computers. Beginning with the computers, how would you connect
the devices to ensure the computers have internet access? - ANS-computers, switch,
router, modem
What characteristics do the 10.0.0.1/24, 172.16.0.2/24, and 192.168.0.3/24 IP
addresses have in common? Select three. - ANS-They are private IP addresses.
Correct. The range of private IP addresses is 10.0.0.0 - 10.255.255.255, 172,16.0.0 -
172.31.255.255, and 192.168.0.0 - 192.168.255.255. They can be used internally by
any organization and will not create a conflict because they are not routable.
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