CCNABRAINDUMP6(1)
添加时间: 2007-9-6 1:55:53 作者: Cisco考试认证 阅读次数:160 来源: http://www.d9soft.com
Exam ccna(640-047)
passing score = 755
no of questions =78
time =120 minutes
date 24-11-99
I cleared the CCNA(640-047) with 92% marks.It was really a interesting experience for me.The exam was really straight forward.If you have studied the Book thoroughly and done practice exams you can get it easily.but one thing to remember you should have some practical experience that can help a lot espacially for configuration questions.
I recommend to study Todd lamlle book thoroughly .there is some command missing in this book for which u can concern ICRC book.
some of the areas of question are;
1.OSI model questions espacially related to layer functions
2.encapsulation question
information is converted into data
data into sgments
segments into pakets
packets into frames
frames into bits
3-Booting of ios
The router boot from three resourses
First from flash
then from tftp
then from rom
the syntax is
router(config)#boot system tftp ios filename tftp server address
router(config)#boot system flash ios filename
router(config)#boot system rom
there were 3-4 questions form wan technologies espacially about frame relay and isdn
fram relay dlci(use to identify the frame relay virtual circuit)
isdn (BRI-2B+!D b for data transfer and D for signiling)
you should also study TCP DOD model thorouhly.
espacially functions of LAN and WAN protocols and on which layer they work
I hope you will take advantage
hope for best for u in future
netguy
Some helpful Q&A for CCNA
1) You are reviewing a consultant's design for your 10Base2,
thin Ethernet, network. The following distances are
outlined.
Host A to Host B is 190 meters
Host B to Host C is 160 meters
Host C to Host D is 300 meters
Which distances are too far according to the specification?
A. Host A to Host B
B. Host B to Host C
C. Host C to Host D
D. No answer is correct
Answer: A & C - The specification for 10Base2 is 185 meters
(600 feet) on coaxial cable.
2) Which window size is more efficient?
A. Window size = 3
B. Window size = 1
C. Window size = 2
D. Window size = 4
E. Window size = 5
Answer: A - The number of data segments the sender is
allowed to have outstanding before it receives and
acknowledgment is called the window. A window size of 3
allows the sender to send three data segments before
expecting an acknowledgment. A window size of 1 would
require an acknowledgment after each data segment.
3) Once data transfer is initiated between two hosts,
congestion can occur. What are two reasons for congestion?
A. A high-speed computer might be able to generate traffic
faster than the network can transfer it.
B. When datagrams arrive at a host or gateway too quickly to
process, they are stored in memory temporarily. The host or
gateway can fill its memory so that it can accept no more
datagrams.
C. Different applications can saturate the bandwidth with
larger segments than the network can handle.
D. Some applications are written with less reliability than
others are.
Answer: A & B - A high-speed computer might send traffic
faster than the network can transfer it and the host or
gateway could exhaust its buffer. The transport layer can
issue a "not ready" indicator to the sender so that data is
discarded.
4) You are reviewing a consultant's design for your 10Base5,
thick Ethernet, network. The following distances are
outlined.
Host A to Host B is 190 meters.
Host B to Host C is 160 meters.
Host C to Host D is 300 meters.
Host D to Host E is 600 meters.
Which distances are too far according to the specification?
A. Host A to Host B
B. Host B to Host C
C. Host C to Host D
D. Host D to Host E
Answer: D - The 10Base5 specification is 500 meters (1640
feet).
5) Put the following fields into order for an Ethernet frame
(not all of the fields belong to the Ethernet frame).
FCS
Type
Data
Preamble
SA
DA
Length
802.2 Header and Data
A. Preamble, DA, SA, Type, Data, FCS
B. Preamble, DA, SA Length, 802.2 Header and Data, FCS
C. Preamble, SA, DA, Length, Type, Data, FCS
D. Preamble, DA, SA, Type, 802.2 Header and Data. FCS
Answer: A - The Ethernet frame contains these fields:
Preamble, DA, SA, Type, Data, FCS. An 802.3 frame has the
fields of Preamble, DA, SA, Length, 802.2 Header and Data,
and FCS. Notice that it differs from an Ethernet frame with
the Length and 802.2 Header fields. The Ethernet frame has
a Type and Data field in place of the Length and 802.2
Header fields.
6) Which statement correctly defines the difference between
Ethernet II (defined by Xerox, Digital, and Intel) and IEEE
802.3?
A. The two specifications differ in their descriptions of
the datalink layer.
B. The two specifications differ in their descriptions of
the physical layer.
C. Ethernet II has MAC and LLC sublayers.
D. IEEE 802.3 has MAC and LLC sublayers.
Answer: A & D - IEEE 802.3 splits out the datalink layer
into MAC and LLC sublayers.
Good luck everyone
Hello to you all.
I passed the CCNA exam today (18.10.99).
Their are 2 hours for 78 questions. The time is just enough. but it's a real tiring exam.
I tried to memorized as many questions as I could , hope it will help you.
1. What is the command to enter a console password?
2. What can you expect to come after the command banner motd?
answer: entering a password.
3. Three questions about steps of encapsulation.two of them where drag and drop, where you had to put each of the 5 steps in it's place and the fird was a strate forward question.
remember the steps are :
user information into data, data intosegments, segments into packets, packets into frames, frames into bits.
3. One drag and drop question where you had to drag the functions of the layers of the osi model into the correct layer.
4. How many bits can you borrow from a class c address for network?
a: 6
5. What are the benefits of TCP/IP protocol?
a: Connection oriented, assurance of delivery.
6. What is the purpose of Flow control?
7. You got an address and a subnet mask and you had to say what kind of address is it , tcp/ip or mac. Very eazy one.
8. What is the purpose of arp?
9. What are the benefits of isdn?
10. How do you log into EXEC mode?
a: Press enter and enter password if asked for.
11. Where does the mac address reside?
a: Just above the data-link layer.
12. What is the function of the command: cdp timer?
13. Igrp - how often updates?
Every 90 seconds
14. You get an ip address with no subnet mask , and had to tell what can you assume out of this address. choose 2.
(a): Class b.
(b): Class c.
(c): Number of hosts.
(d): ?
I think the answer was a+c, not sure about it.
15. What range of numbers presents IPX standard access lists?
a: 800-899.
16. A question about where should you place a standard access list and where an extended access list.
a: The answers ranged between near the sender side of the router or near the receiver side of the router.
17. One question about Frame Relay encapsulation types. You had a list of options and had to choose two correct statements.
(a): Cisco - Default.
(b): If not only cisco routers you have to choose IEFT.
18. You have an Ip address and a subnet mask and you have to choose a legal range of ip addresses.
19. At what mode can you use Ping? choose all that aply.
(a): Exec mode
(b): Privilliged mode.
I think those two where the answers.
Thats all I can remember. As you can see mainly osi model, iso, tcp/ipand and encapsulation. No apple talk, no physical media.
Hope it will help you and goodluck.
Twitty.
CCNA Cisco Certiefied Network Associate
Thomas Leuthard
I have used the
- Sybex Book by Todd Lammle
- some CBT's on Routing Basics
- Braindumps
Read the other braindumps and check all answers yourself. Know the OSI modell and all the router commands. I had only about 4 subnetting questions. Two easy questions about an IPX and an IP adress. You have to identify the what is the network ID and what is the host ID:
Class C adress with standard subnet mask (192.168.12.6) ?
IP adress. Network ID 192.168.12, Host ID 0.0.0.6
IP adress. Network ID 192.168.12, MAC adress 0.0.0.6
And so on...very easy. Something similar with an IPX adress.
It seem to have not a big pool of questions. So the following other questions came on my exam and possibly also in yours:
The five steps of Encapsulation:
1) User information is converted to data.
2) Data is converted to segments.
3) Segments are converted to packets or datagrams.
4) Packets or datagrams are converted to frames.
5) Frames are converted to bits.
What kind of services are provided by the Presentation layer ?
JPEG, TIFF, PICT, EBCDIC to ASCII, MIDI, MPEG, QuickTime
What kind of services are provided by the Session layer ?
NFS, SQL, RPC, X Windows, ASP, DNA SCP
How to enable a Banner on a Cisco Router ?
Router(Config#) banner motd #
What are the three ways to display IPX interface e0 ?
sh ipx int e0
sh ipx interface e0
sh ipx interface ethernet0
Which IP-class provides the fewest numbers of Hosts?
Class A
Class B
Class C
Class D
I think it is Class C as Class D is not very official.
How to change the Console password to Cisco ?
Router(config)# line con 0
Router(config-line)# login
Router(config-line)# password Cisco
How are the ISDN protocols defined ?
I stands for concepts, terminology and services
E stands for existing telephone network
Q stands for switching and signaling
The question is worded a bit different, but you have to know this three and you are fine.
What are the benefits of ISDN (choose 2) ?
Data only (wrong)
Voice only (wrong)
Faster than a 56K link (right)
Something else (right)
What is the command to show both source and destination addresses in ipx ?
debug ipx routing activity
How do you log onto EXEC mode?
Press enter and enter the password if necessary.
Type the command to instruct the router to load the IOS from Read Only Memory?
Load system rom
*boot system rom
run rom
boot system default
What is the FrameRelay configuration command for the second subinterface ?
interface s0.2 point-to-point
One access-list question where the answer was the same except the level where the command was entered:
wrong: Router(config-if)# access-list 1 permit 172.16.20.1 0.0.0.0
right: Router(config) # access-list 1 permit 172.16.20.1 0.0.0.0
The access list will be defined at global level, not at the interface level. It's a small but important detail. The access group command will be defined at interface level:
What does the MAC layer of the Datalink layer do?
How are routing lops prevented (choose 4) ?
Poison reverse
Holddows
Split horizon
???
All in all not that difficult, but when you don't have hands-on experience you have to study hard.
CCNA Braindump
1) Cisco Discovery Protocol (CDP) is a protocol that "discovers" and shows
information about other Cisco devices running Cisco IOS Release 10.3 or later.
It runs over the data-link layer connecting lower physical media and
upper-network-layer protocols. Because it operates at this level, CDP gives
devices that support different network-layer protocols the ability to
interchange information.
Which of the following statements are accurate in relation to the use of CDP on
a Cisco router?
a) CDP is enabled by default on a Cisco devices upon bootup.
b) CDP is enabled by default on all supported interfaces to send and receive
CDP information
c) CDP allows discovery of neighboring Cisco devices only.
d) Discovery is only possible between devices running the same protocol suite.
2) Each of the modes serves to provide a particular function when
performing configuration entries.Choose which descriptions are correct for the following router modes:
a) Setup mode - suitable for detailed router configuration.
b) User EXEC mode - allows the administrator to view configuration
settings for the router and make any necessary changes.
c) Global configuration mode - is signified by the Router(config)#
prompt.
d) Privileged EXEC mode - allows file manipulation and remote access
to the router.
3) Which is the proper way to store a copy of the current configuration in RAM on a
network TFTP server?
a) save running-config tftp
b) copy startup-config tftp
c) copy running-config tftp
d) save tftp startup-config
e) copy tftp running-config
f) save tftp running-config
4) Router configuration can come from both internal and external components. Serial
ports allow configuration of the router by using a console terminal or you may
remotely configure the router by using a modem that is connected to the
auxiliary port.
Router configuration can take place over any of its network interfaces. From the
following, choose all that are valid network interfaces for configuring a CISCO
router.
(a) WINS Server
(b) virtual terminals
(c) DHCP Server
(d) network management stations
5) The CISCO IOS provides you with commands to allow you to check how the router is
functioning. With these commands you are able to retrieve various diagnostics
about the hardware, the operating system, and other information which is
invaluable when tuning, tweaking or even troubleshooting.
If you wanted to check to see how long the router has been running, which
command would you type in at the prompt?
(a) show info
(b) show status
(c) show version
(d) show process
6) The following is a partial representation of the result obtained when
entering the show interface serial command: Router# show int s 1
Serial is up, line protocol is down
How would you interpret this status printout?
a) There is a connection problem
b) The line has been administratively disabled
c) The link is operational
d) There is a serial interface problem
7) Which of the following match the definition of the Transport layer?
A. TCP - Provides Flow Control and Error Checking
B. TCP - Provides Connection Oriented Services
C. UDP - Provides Connectionless service
D. UDP - Provides Connection oriented service
E. IP - Provides Connectionless service
F. IP - Provides Connection oriented service
8) Which of the following WAN protocols has protocols that work at the Network layer?
A. ISDN
B. PPP
C. X.25
D. Frame Relay
E. SDLC
F. HDLC
9) What command do you use to copy the configuration from NVRAM to working ram?
A. Copy tftp run
B. Copy star tftp
C. Copy run star
D. Copy star run
10) Which of the following commands will show an extended access list 169?
上一篇文章: CCNABRAINDUMP4(2) 下一篇文章: CCNABRAINDUMP6(2)
相关软件: