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Wednesday, November 23, 2011

Exam Viewer - DHomesb Practice Final Exam - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0) "50 Items"

1
What is a major characteristic of asymmetric Internet service?
Download speeds and upload speeds are equal.
Download speeds are faster than upload speeds.
Data traffic speeds are faster than voice traffic speeds.
Used when consistently uploading large amounts of graphics, video and multimedia traffic.

2
Which two transport layer protocols enable hosts to communicate and transfer data? (Choose two.)
DHCP
ICMP
IP
TCP
UDP

3
Which protocol is used by a client to retrieve an e-mail from a remote server using a TCP/IP connection?
DNS
FTP
POP
HTTP

4
What is the function of the DNS server?
It maps the IP address to the MAC address.
It translates a computer or domain name to the associated IP address.
It manages the domain that clients are assigned to.
It accepts HTTP requests from clients.

5
Which transport layer protocol is used when an application requires acknowledgment that data has been delivered?
FTP
TCP
UDP
RTP
SMTP

6
What are the two possible values for a digital bit? (Choose two.)
0
1
A
F
#
9

7

Refer to the exhibit. Host A sends a message to a group of four computers out of the ten computers on this network. Which type of message does host A send?
broadcast
multicast
simulcast
unicast

8
All hosts within a domain receive the same frame that originates from one of the devices. The domain is also bounded by routers. What type of domain is this?
broadcast
collision
local
multicast

9
What is the maximum number of bytes that is allowed in a standard IEEE 802.3 Ethernet frame?
64
1024
1518
4096

10

Refer to the exhibit. A user on Host1 requests a web page from the web server. Which diagram is accurate for the encapsulation of the traffic that is sent from the user to the web server?


^ RIGHT ^



11
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
DSL
dial-up
satellite
cell modem
cable modem

12
What is the function of CSMA/CA on a wireless Ethernet network?
to prevent collisions
to broadcast messages
to select the least congested channel
to establish an ACK between devices

13
What layer is the first point of entry for a host into the network?
core layer
access layer
network layer
distribution layer

14
Which three statements are true about local and network applications? (Choose three.)
A local application is loaded in a local computer and can be accessed by a remote computer on the network.
A network application is loaded in a local computer and accessed from a remote computer.
A local application is loaded in a local computer and accessed only by the local computer.
A network application is loaded in a local computer and accessed only by the local computer.
An example of a local application is e-mail.
An example of a network application is instant messaging.

15
A network designer is working with a small company to determine the network type best suited to the needs of the company. Which two characteristics could the designer use to describe a peer-to-peer network to the owner of the company? (Choose two.)
central administration
easy to install
low cost
scalable
secure

16

Refer to the graphic. Assume that the exhibited output is from a host that is connected to a Linksys integrated router. What is one of the first things you should check?
IP address on the host
IP address on the router
subnet mask on the host
default gateway on the host
link status LED on the front of the router

17
Which part of a data packet is used by a router to determine the destination network?
source IP address
user data
destination IP address
control information
destination MAC address

18
What network device contains a table of all locally connected networks and the interfaces used to connect to them?
hub
switch
router
access point
NIC

19

Refer to the exhibit. Host2 attempts to establish communications with Server1. What action will switch SW1 take prior to forwarding the frame?
flood the frame out all interfaces
learn the MAC address that is associated with Host2
assign a MAC address to Host2 from the MAC table
poll all interfaces to learn their assigned IP addresses

20

Refer to the exhibit. Assume that the command output is from a wireless DHCP client that is connected to a Linksys integrated router. What can be deduced from the output?
The DHCP configuration on the router needs to be verified.
The WEP key or SSID needs to be verified.
The wireless connection is operational.
The wireless NIC driver or the NIC itself needs to be reinstalled.

21

Refer to the exhibit. A user sets up a home network and uses a crossover cable from Switch1 to the Internet port on the ISR. However, there is no connection between the host H1 and the server. What should the user do in order to establish a connection?
Replace the cable with a console cable.
Replace the cable with a rollover cable.
Replace the failed crossover cable with a working crossover cable.
Replace the cable with a straight-through cable.

22
What is the default subnet mask for the IP address 128.107.23.10?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255

23

Refer to the exhibit. A network technician is statically assigning an IP address to a PC. The default gateway is correct. What would be a valid IP address to assign to the host?
128.106.10.100
128.107.255.1
128.107.255.254
128.108.100.10

24

Refer to the exhibit. What default gateway address will be assigned to PC1 if access to remote resources is needed?
192.31.7.3
192.168.1.101
192.168.1.253
A default gateway is not necessary.

25
Which of the following are the address ranges of the private IP addresses? (Choose three.)
10.0.0.0 to 10.255.255.255
200.100.50.0 to 200.100.25.255
150.150.0.0 to 150.150.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
127.16.0.0 to 127.31.255.255

26
Why would a corporate web server be assigned a public IP address instead of a private IP address?
The public address can be acquired at no cost.
The public address can be routed on the Internet.
The public address provides a security advantage.
The same public address can be used on multiple servers to prevent depletion of available IP addresses.

27
Your school network blocks all websites related to online gaming. What type of security policy is being applied?
identification and authentication
remote access
acceptable use
incident handling

28
What is a service pack?
an access policy
an agreement between a company and a vendor
a piece of code created to fix one specific problem
a collection of patches and updates released by a vendor
a small piece of software designed specifically for security issues

29
Which type of attack involves flooding a server port with SYN messages?
phishing
brute force
denial of service
data manipulation

30
The help desk at a large packaging company receives a call from a user who is concerned about lost data files on the local PC. The help desk technician learns that the user clicked on an icon that appeared to be a program update, but no updates were scheduled for that program. What type of attack has likely occurred?
worm
DDoS
brute force
Trojan horse

31

Refer to the graphic. What feature can be installed on the Linksys integrated router to convert private IP addresses to Internet-routable addresses?
authentication
DHCP
encryption
firewall
NAT
WEP

32
What is the purpose of creating a DMZ during network firewall implementation?
to create a server security zone accessible only to internal clients
to create a dirty zone that allows all inbound and outbound traffic
to allow for a publicly accessible zone without compromising the internal network
to specify a higher security level than normally required for the internal production network

33
Which type of computer uses an integrated monitor and keyboard?
pocket PC
laptop
mainframe
server
workstation

34
Which media is used to carry electrical pulses that represent digital data?
copper cable
fiber optic cable
wireless
radio

35
Some new features are available for the OS that is currently running on a user's PC. What method should be chosen so that the user can install these new feature sets?
clean install
multi-boot
upgrade
virtualization

36
A learner wants to interact with the operating system of a computer. Which two methods can be used for this? (Choose two.)
CLI
GUI
kernel
third party software
shell

37
Select the connection that would require a straight-through cable.
a switch to a hub
a router to a switch
a switch to a switch
a router to a router

38
When terminating UTP cabling, why is it important to untwist only a small amount of each wire pair?
minimizes crosstalk
makes installation faster
ensures wires are in correct order
makes it easier to fit wires into connector

39
What are two examples of storage peripheral devices? (Choose two.)
printer
flash drive
headphones
external DVD
barcode reader

40
When terminating a UTP cable, why is it important to push the wires all the way into the end of the connector?
to allow the cable to endure more stretching or twisting
to ensure good electrical contact
to ensure that the wires are in correct order
to minimize crosstalk

41
Which two IP configuration components does the computer use to identify its subnetwork? (Choose two.)
default gateway
IP address
MAC address
DNS server address
subnet mask

42

Refer to the exhibit. What is a possible reason that the PC is unable to ping the default gateway IP address?
The PC is on a different network than the default gateway.
A straight-through cable should be used to connect the switches.
A straight-through cable should be used to connect the PC to the switch.
Because the correct cable types are used for each segment, a bad cable could be the problem.

43

Refer to the exhibit. What is the purpose of assigning a network name of College?
It enables access to the AP configuration GUI by name rather than by address.
It encrypts data between the wireless client and the AP.
It identifies the wireless LAN.
It translates an internal address or group of addresses to a public address.
It translates IP addresses into easy-to-remember domain names.

44

Refer to the exhibit. Why would a network administrator use the network mode that is shown?
to support hosts on different IP networks
to support hosts that use different 802.11 standards
to support both wireless and wired Ethernet hosts
to support hosts with different operating systems
to support hosts with network cards from different manufacturers

45
What procedure will help prevent users from detecting a wireless network?
Enable WEP.
Enable MAC filtering.
Disable SSID broadcasts.
Change the default administrator password on the AP.

46
A user is unable to send e-mail. While troubleshooting this problem, the network technician first verifies the physical connectivity of cables. Which troubleshooting approach is being followed?
bottom-up
divide-and-conquer
top-down
trial and error

47
A user is not able to connect to the network. A PC technician replaces the network cable that connects the PC to the switch port. The user is now able to connect to the network. Which troubleshooting technique did the technician use?
top-down
substitution
divide-and-conquer
a combination of top-down and divide-and-conquer

48
In an attempt to verify connectivity, a user issues the ping command to a device that is not on the local network. The ping is unsuccessful. What can be determined from this result?
The default gateway is misconfigured.
The patch cable on the host station is faulty.
The router between the host and destination is faulty.
Further troubleshooting will be required to reach a definite conclusion.

49
What is the meaning of the term crosstalk?
interference of signals between wire pairs
loss of signal strength as distance increases
damage of the signal when two bare wires touch
strengthening of a signal by a networking device

50
What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device

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