640-802 CCNA
By
Eddie Vi
SMASHWORDS EDITION
PUBLISHED BY:
E Vi on Smashwords
Copyright 2012 E Vii
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Contents
This book includes new sample questions never before in print. Offering numerous sample questions available nowhere else, this book will help you pass the 640-802 CCNA exam on your first attempt.
The 640-802 Cisco Certified Network Associate (CCNA) is the composite exam associated with the Cisco Certified Network Associate certification. Candidates can prepare for this exam by taking the Interconnecting Cisco Networking Devices Part 1 (ICND1) v1.0 and the Interconnecting Cisco Networking Devices Part 2 (ICND2) v1.0 courses. This exam tests a candidate's knowledge and skills required to install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; extending switched networks with VLANs; determining IP routes; managing IP traffic with access lists; establishing point-to-point connections; and establishing Frame Relay connections.
The following topics are general guidelines for the content likely to be included on the Cisco Certified Network Associate exam. However, other related topics may also appear on any specific delivery of the exam
Describe how a
network works
Configure, verify and troubleshoot a switch with
VLANs and interswitch communications
Implement an IP addressing
scheme and IP Services to meet network requirements in a medium-size
Enterprise branch office network.
Configure, verify, and
troubleshoot basic router operation and routing on Cisco
devices
Explain and select the appropriate administrative tasks
required for a WLAN
Identify security threats to a network and
describe general methods to mitigate those threats
Implement,
verify, and troubleshoot NAT and ACLs in a medium-size Enterprise
branch office network.
Implement and verify WAN links
Question 1
As a network administrator, you will
need to decide on the appropriate network devices to use. Which of
the following correctly describes the roles of devices in a WAN?
(Choose three)
A. A modem terminates a digital local loop.
B. A
CSU/DSU terminates a digital local loop.
C. A CSU/DSU terminates
an analog local loop.
D. A modem terminates an analog local
loop.
E. A router is commonly considered a DTE device.
A. ABC
B. BCE
C. BDE
D. ADE
Answer: C
Summary
Not too much to say here except CSU/DSU is considered to be a DCE
Question 2
Which of the following statements are
true regarding bridges and switches? (Choose 3.)
A. Both bridges
and switches make forwarding decisions based on Layer 2 addresses.
B.
Switches have a higher number of ports than most bridges.
C.
Switches are primarily software based while bridges are hardware
based.
D. Both bridges and switches forward Layer 2 broadcasts.
E.
Bridges define broadcast domains while switches define collision
domains.
F. Bridges are frequently faster than switches.
A. ABD
B. ABC
C. ABD
D. ADE
Answer: A
Question 3
It is known that the OSI model has
seven layers. Can you tell me at which layers of the OSI model WANs
operate? (Choose two.)
A. session layer
B. datalink layer
C.
transport layer
D. physical layer
A. AD
B. BD
C. CD
D. AC
Answer: B
Question 4
How does replacing a hub with a switch affect CSMA/CD behavior in an Ethernet network?
A. In increases the size of the
collision domain by allowing more devices to be connected at once.
B.
It effectively eliminates collisions.
C. It reduces the total
amount of bandwidth available to each device.
D. It decreases the
amount of time that a jam signal must be sent to reach all network
devices.
Answer: B
Question 5
Why will a switch never learn a broadcast address?
A. Broadcasts only use network layer
addressing.
B. Broadcast addresses use an incorrect format for the
switching table.
C. A broadcast address will never be the source
address of a frame.
D. Broadcast frames are never sent to
switches.
Answer: C
Question 6
Which two of these statements
regarding RSTP are correct? (Choose two.)
A. RSTP defines new port
roles.
B. RSTP is compatible with the original IEEE 802.1D STP.
C.
RSTP defines no new port states.
D. RSTP cannot operate with
PVST+.
A. AB
B. AC
C. AD
D. CD
Answer: A
Question 7
Which two functions of switch ports
will forward traffic on the basis of the IEEE 802.1w standard?
(Choose two.)
A. alternate
B. backup
C. designated
D.
root
A. AD
B. BD
C. CD
D. BC
Answer: C
Question 8
Which of the following describe
private IP addresses? (Choose two.)
A. addresses licensed to
enterprises or ISPs by an Internet registry organization
B.
addresses that can be routed through the public Internet
C. a
scheme to conserve public addresses
D. addresses that cannot be
routed through the public Internet
E. addresses chosen by a
company to communicate with the Internet
A. AD
B. AB
C. BC
D. CD
Answer: D
Question 9
Which two addresses can be assigned
to a host with a subnet mask of 255.255.254.0? (Choose two.)
A.
113.10.4.0
B. 186.54.3.0
C. 175.33.3.255
D. 26.35.2.255
E.
17.35.36.0
A. AB
B. BD
C. AD
D. CD
Answer: B
Question 10
In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links?
A. 255.255.255.240
B.
255.255.255.254
C. 255.255.255.0
D. 255.255.255.252
Answer: D
Question 11
Which two of these statements are
true of IPV6 address representation? (Choose two)
A. A single
interface may be assigned multiple IPV6 addresses of any type
B.
Every IPV6 interface contains at least one loopback address.
C.
Leading zeros in an IPV6 16 bit hexadecimal field are mandatory.
D.
The first 64 bits represent the dynamically created interface ID
A. AB
B. AC
C. BC
D. CD
Answer: A
Summary
the loopback address is ::1/128
Global Unicast addresses start with 2000::/3 and are assigned by
the IANA
Link Local Starts with FE80::/10 1111 1110 10
Every
IPv6 interface contains at least one Link Local address & the
Loopback address
Question 12
What will a new router do during startup if a configuration file is not located in NVRAM?
A. It will search for the
configuration file in flash and if no configuration file is found
there, it will enter the setup dialog.
B. It will search for the
configuration file on a TFTP server and if no configuration file is
found there, it will load a limited configuration file fromROM.
C.
It will search for the configuration file on a TFTP server and if no
configuration file is found there, it will enter the setup dialog.
D.
It will search for the configuration file in flash and if no
configuration file is found there, it will load a limited
configuration file from ROM.
Answer: C
Question 13
The Routing Information Protocol (RIP) is a dynamic routing protocol used in local area networks. What is the default routing update period for RIPv2?
A. 180 seconds
B. 30 seconds
C.
240 seconds
D. 15 seconds
Answer: B
Question 14
Which three statements describe the
differences between RIP version 1 and RIP version 2? (Choose
three.)
A. RIP version 2 sends the subnet mask in updates and RIP
version 1 does not.
B. RIP version 1 broadcasts updates whereas
RIP version 2 uses multicasts.
C. RIP version 1 multicasts updates
while RIP version 2 uses broadcasts.
D. Both RIP version 1 and RIP
version 2 are classless routing protocols.
E. Both RIP version 1
and version 2 support authentication.
F. RIP Version 2 is a
classless routing protocol whereas RIP version 1 is a classful
routing protocol.
A. ABC
B. ABE
C. ACE
D. ABF
Answer: D
Question 15
In order to allow the establishment of a Telnet session with a router, which set of commands must be configured?
A. router(config)# line console 0
router(config-line)# enable secret cisco router(config-line)#
login
B. router(config)# line console 0 router(config-line)#
enable password cisco
C. router(config)# line console 0
router(config-line)# password cisco router(config-line)# login
D.
router(config)# line vty 0 router(config-line)# password cisco
router(config-line)# login
Answer: D
Question 16
Some of the company routers have been
configured with default routes. What are some of the advantages of
using default routes?(Choose two.)
A. The allow connectivity to
remote networks that are not in the routing table.
B. They direct
traffic from the Internet into corporate networks.
C. The keep
routing tables small.
D. They require a great deal of CPU
power.
E. They establish routes that will never go down.
A. AB
B. AC
C. AD
D. BD
Answer: B
Question 17
Which of the commands below would you enter if you wanted to see the configuration register of your router?
A. show boot
B. show version
C.
show register
D. show config
Answer: B
Question 18
OSPF routing uses the concept of
areas. What are the characteristics of OSPF areas? (Choose Three.)
A.
Each OSPF area requires a loopback interface to be configured.
B.
Areas may be assigned any number from 0 to 65535.
C. Area 0 is
called the backbone area.
D. Hierarchical OSPF networks do not
require multiple areas.
E. Multiple OSPF areas must connect to
area 0.
F. Single area OSPF networks must be configured in area 1.
A. ACD
B. ACE
C. BCE
D. ADE
Answer: C
Question 19
Which two statements are true
regarding EIGRP? (Choose two.)
A. Passive routes are in the
process of being calculated by DUAL.
B. EIGRP supports VLSM, route
summarization, and routing update authentication.
C. EIGRP
exchanges full routing table information with neighboring routers
with every update.
D. If the feasible successor has a higher
advertised distance than the successor route, it becomes the primary
route.
E. A query process is used to discover a replacement for a
failed route if a feasible successor is not identified from the
current routing information.
A. AB
B. AE
C. CE
D. BE
Answer: D
Question 20
A new hardware item is using an IEEE 802.11b a wireless LAN. What is the maximum data rate specified for this WLAN?
A. 10 mbps
B. 11 Mbps
C. 1000
Mbps
D. 16 Mbps
Answer: B
Question 21
While logged into a router you manually shut down the serial 0 interface using the "shutdown" interface configuration command. You then issue the "show interface serial 0" command in exec mode. What could you expect the status of the serial 0 interface to be?
A. Serial 0 is down, line protocol is
down
B. Serial 0 is administratively down, line protocol is
down
C. Serial 0 is down, line protocol is up
D. Serial 0 is
up, line protocol is up
Answer: B
Question 22
Which option is a valid IPv6 address?
A. 2001:0000:130F::099a::12a
B.
2002:7654:A1AD:61:81AF:CCC1
C. FEC0:ABCD:WXYZ:0067::2A4
D.
2004:1:25A4:886F::1
Answer: D
Question 23
Which switch would STP choose to become the root bridge in the selection process?
A. 32768: 11-22-33-44-55-66
B.
32768: 22-33-44-55-66-77
C. 32769: 11-22-33-44-55-65
D. 32769:
22-33-44-55-66-78
Answer: A
Summary
Very easy to make a mistake here seems like answer C is correct but Priority is lowered on A.
Question 24
An administrator attempts a traceroute but receives a "Destination Unreadable" message. Which protocol is responsible for that message?
A. RARP
B. RUDP
C. ICMP
D.
SNMP
Answer: C
Question 25
Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?
A. enable cdp
B. cdp enable
C.
cdp run
D. run cdp
Answer: C
Question 26
Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?
A. presentation
B. session
C.
transport
D. network
Answer: D
Question 27
What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?
A. It designates VLAN 999 for
untagged traffic.
B. It blocks VLAN 1 traffic from passing on the
trunk.
C. It creates a VLAN 999 interface.
D. It designates
VLAN 1 as the default for all unknown tagged traffic.
Answer: A
Question 28
Which of the following is not a valid VTP mode?
A. Server
B. Client
C.
Transparent
D. Hybrid
Answer: D
Question 29
What functions do routers perform in
a network? (Choose two.)
A. path selection
B. packet
switching
C. VLAN membership assignment
D. microsegmentation of
broadcast domains
A. AB
B. AC
C. BC
D. CD
Answer: A
Summary
Routers route, a route is synonymous with path so A is correct. Routers switch packets from one router to another. C. Routers are not involved in VLAN membership assignment they can be used to route packets between VLANS. D Switchs perform microsegmentation of collision domains. Routers do break up broadcast domains but using the term microsegmentation is not the correct way of describing this.
Question 30
A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. What command will display the required information?
A. Router# show ip eigrp adjacency
B.
Router# show ip eigrp topology
C. Router# show ip eigrp
interfaces
D. Router# show ip eigrp neighbors
Answer: D
Summary
The show ip eigrp ? options are
interfaces IP-EIGRP interfaces
neighbors IP-EIGRP neighbors
topology IP-EIGRP Topology Table
traffic IP-EIGRP Traffic
Statistics
Here is an example of the show ip eigrp neighbors
command.
IP-EIGRP neighbors for process 212
H Address
Interface Hold Uptime SRTT RTO Q Seq
(sec)
(ms) Cnt Num
0 192.168.36.14
Se0/0 14 00:04:41 40 1000 0 9
1
192.168.60.26 Se0/1 12 00:04:38 40
1000 0 9
If the question just asked for IP address then
show ip eigrp topology would also work but that command does not
show: retransmit interval and the queue counts for the adjacent
routers.
Question 31
How does using the service password-encryption command on a router provide additional security?
A. by encrypting all passwords
passing through the router
B. by encrypting passwords in the plain
text configuration file
C. by requiring entry of encrypted
passwords for access to the device
D. by configuring an MD5
encrypted key to be used by routing protocols to validate routing
exchanges
Answer: B
Question 32
What are two characteristics of Frame
Relay point-to-point subinterfaces? (Choose two.)
A. They create
split-horizon issues.
B. They require a unique subnet within a
routing domain.
C. They emulate leased lines.
D. They are ideal
for full-mesh topologies.
E. They require the use of NBMA options
when using OSPF.
A. AC
B. BC
C. BD
D. AB
Answer: B
Summary
An exists with routing and
Frame-relay as a result of split-horizon. Here are methods to
overcome that issue.
- Turn off split horizon; however,disabling
split horizon increases the chances of routing loops in your network.
(Split horizon is not an issue if you use a link-state routing
protocol.)
- Use a fully meshed topology; however,this topology
increases the cost. PUse subinterfaces. When you use a Frame Relay
point-to-point subinterface,each subinterface is on its own
subnet.
A. point-to-point subinterfaces overcome split-horizon
issues. A is incorrect.
B. each subinterface has it's own subnet
so B is correct.
C. The term point-to-point is also a description
used with leased lines and implies a dedicated connection C. is
correct.
D. full-mesh topologies is another way to overcome
split-horizon problems and provide redundancy. They do not require
subinterfaces.
E. One of the purposes of using subinterfaces is to
eliminate the need to turn broadcasting on.
Question 33
You are about to configure PPP on the
interface of a Cisco router. Which authentication methods could you
use? (Choose two)
A. CHAP
B. VNP
C. LAPB
D. PAP
A. AD
B. BC
C. BD
D. AB
Answer: A
Question 34
Which type of cable is used to connect the COM port of a host to the COM port of a router or switch?
A. crossover
B.
straight-through
C. rolled
D. shielded twisted-pair
Answer: C
Question 35
What is the principle reason to use a private IP address on an internal network?
A. Subnet strategy for private
companies.
B. Manage and scale the growth of the internal
network.
C. Conserve public IP addresses so that we do not run out
of them.
D. Allow access reserved to the devices.
Answer: C
Question 36
What is the first 24 bits in a MAC address called?
A. NIC
B. BIA
C. OUI
D. VAI
Answer: C
Question 37
Workstation A has been assigned an IP
address of 192.0.2.24/28. Workstation B has been assigned an IP
address of 192.0.2.100/28. The two workstations are connected with a
straightthrough cable. Attempts to ping between the hosts are
unsuccessful. What two things can be done to allow communications
between the hosts? (Choose two.)
A. Replace the straight-through
cable with a crossover cable.
B. Change the subnet mask of the
hosts to /25.
C. Change the subnet mask of the hosts to /26.
D.
Change the address of Workstation A to 192.0.2.15.
E. Change the
address of Workstation B to 192.0.2.111.
A. AD
B. BC
C. BD
D. AB
Answer: D
Question 38
What two things will a router do when
running a distance vector routing protocol? (Choose two.)
A. Send
periodic updates regardless of topology changes.
B. Send entire
routing table to all routers in the routing domain.
C. Use the
shortest-path algorithm to the determine best path.
D. Update the
routing table based on updates from their neighbors.
E. Maintain
the topology of the entire network in its database.
A. AB
B. AD
C. AC
D. CD
Answer: B
Summary
Distance vector Protocols send out
periodic updates by defuault RIP broadcasts updates every 30 seconds.
So A is correct.
B. Although RIP broadcasts it's updates they will
only get as far as their next hop neighbors. That next hop will
update it's database and broadcast that out to it's neighbors keeping
in mind the split-horizon rule. B is incorrect.
C. OSPF is a link
state routing protocol SPF is not used in distance vectro C is
incorrect. As stated in the explination of B updates come from
routers neighbors D is correct.
Distance Vector protocols
database contains the best path to network not all paths to the
network. A hybrid or Link-state maintain topology databases which
include all the routes in the domain. Therefore E is incorrect.