CCENT Questions by Topics

CCNA And CCENT Cisco Certification Exam Training Questions –10 Questions On LAN Switching

Posted on September 9, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam |

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CCNA And CCENT Cisco Certification Exam Training Questions — 10 Questions On Router Commands, Memory, And Config Storage

Posted on August 26, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam | Tags: , , , |

Exam Source

Study Guides:

* ROM, RAM, NVRAM, And Flash
* The Boot Process
* Setup Mode
* Configuration Files and IOS Upgrading
* The Configuration Register

Video Explanation

1. When a Cisco router stores its IOS image locally, where is that image kept?

A. ROM

B. Flash

C. RAM

D. NVRAM

 

2. Where is a router’s startup configuration file kept?

A. RAM

B. ROM

C. Flash

D. NVRAM

 

3. Where is a router’s running configuration kept?

A. RAM

B. ROM

C. NVRAM

D. Flash

 

4. A router will attempt to load its IOS image from what locations, and in what order?

A. Flash, TFTP Server, ROM

B. Flash, ROM, TFTP Server

C. ROM, RAM, Flash, TFTP Server

D. RAM, ROM, TFTP Server, Flash

E. TFTP Server, Flash, ROM

F. ROM, TFTP Server, RAM, Flash

 

5. To change the order of the correct answer to #4, what needs to be changed?

 To change the configuration register value.

6. What keystroke allows you to exit Setup Mode without saving any of the configuration you’ve written to that point?

 <Ctrl> + c

7. Examine the following configuration and identify the true statements.

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#enable password CISCO
R1(config)#enable secret CCNA

A. The “t” in the first line stands for “terminal”.

B. The “t” in the first line stands for “TFTP Server”

C. When prompted for an enable password on this router, the user should enter “CISCO”.

D. When prompted for an enable password on this router, the user should enter “CCNA”.

E. Both “CISCO” and “CCNA” will be accepted for an enable password.

F. Neither “CISCO” nor “CCNA” will be accepted for an enable password.

 

8. Which of the following commands displays a router’s configuration register settings?

A. show interface

B. show controller

C. show config-register

D. show version

 

9. You’ve just changed a router’s configuration register setting. What must be done to make the change take effect?

A. A reload, which must be done manually.

B. A reload, which will occur 60 seconds after changing that register setting.

C. Save the change to the startup configuration and do nothing else.

D. No additional action is needed; like many Cisco router commands, the change takes effect immediately.

 

10. Examine the following output and name the mode the router is currently in.

Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the systemWould you like to enter basic management setup? [yes/no]: y
Configuring global parameters:

  Enter host name [Switch]

In setup mode

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CCNA And CCENT Cisco Certification Exam Training Questions — 10 Questions On Static Routing, Debugs, And RIP

Posted on August 26, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam | Tags: , , , |

Exam Source

Study Guides:

* Static Routing Theory
* Floating Static Routing
* RIP Routing Theory
* Static Routing and RIP Routing Labs

1. What two commands resulted in the following output?

IP: s=172.12.123.3 (local), d=172.12.123.2 (Serial0), len 100, sending
IP: s=172.12.123.1 (Serial0), d=172.12.123.3 (Serial0), len 56, rcvd 3
IP: s=172.12.123.2 (Serial0), d=172.12.123.3 (Serial0), len 100, rcvd 3

A. debug frame lmi

B. debug packet length

C. debug ip packet

D. ping 172.12.123.1

E. ping 172.12.123.2

F. ping 172.12.123.3

 

2. Identify the true statements regarding the following output.

IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable

A. A debug command is running on the local router.

B. A debug command is not running on the local router.

C. The word unroutable indicates that the packets are not leaving the local router.

D. The command output indicates that these packets are leaving the router.

E. The word unroutable indicates that the remote interface with the IP address 2.2.2.2 is administratively shut down.

 

3. What command was just run on this router?

R3#
All possible debugging has been turned off

undebug all

 

4. A valid ip route command can end with which of the following?

A. The name of the exit interface on the local router.

B. The IP address of the exit interface on the local router.

C. The IP address of the next-hop router.

D. The name of the interface on the next-hop router that should receive the packets.

 

5. Briefly describe a floating static route.

 A floating static route is a static route with an administrative distance higher than that of the routing protocol use. In this way, the floating static route will only appear in the routing table if the dynamically learned route is lost.

6. Identify the true statements regarding the following command output.

R3#
RIP: sending update to 224.0.0.9 via Serial0 (172.12.123.3)
     172.12.123.0/24 -> 0.0.0.0, metric 1, tag 0
     1.1.1.1/32 -> 172.12.123.1, metric 2, tag 0
     2.2.2.2/32 -> 172.12.123.2, metric 3, tag 0
     3.3.3.3/32 -> 0.0.0.0, metric 16, tag 0

A. The debug ip rip command is running.

B. The debug ip packet command is running.

C. The ping ip rip command was used.

D. Route poisoning is in effect.

E. Split horizon is in effect.

F. At least one of these routes is a floating static route.

G. This is a RIP version 1 update.

H. This is a RIP version 2 update.

 

7. Identify the true statements comparing RIP versions 1 and 2.

A. The destination address of the routing updates is the same.

B. VLSM is supported.

C. Subnet mask information is carried in the routing updates.

D. The metric used for route poisoning is the same.

 

8. What routing algorithm is used by RIP?

A. SPF

B. Bellman-Ford

C. Dijkstra

D. DUAL

 

9. A default RIP configuration sends what version(s) of routing updates?

A. Version 1 only.

B. Version 2 only.

C. Both versions 1 and 2.

D. There is no default setting; this must be manually configured.

 

10. A default RIP configuration accepts what version(s) of routing updates?

A. Version 1 only.

B. Version 2 only.

C. Both versions 1 and 2.

D. There is no default setting.

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CCNA And CCENT Cisco Certification Exam Training Questions –10 Questions On HDLC, PPP, And Point-To-Point Connections

Posted on August 26, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam | Tags: , , , |

Exam Source

Reference Post

Video Explanation

 

1. Identify the correct statements regarding HDLC and PPP running on a point-to-point connection.

A. If HDLC is running on one end, HDLC must be running on the other end as well.

B. If HDLC is running on one end, the other end can run HDLC or PPP.

C. If PPP is running on one end, PPP must be running on the other end as well.

D. If PPP is running on one end, the other end can run HDLC or PPP.

2. If a point-to-point connection is physically fine but there is a timer or encapsulation mismatch issue, which of the following will appear in the output of show interface serial?

A. Serial0 is up, line protocol is up

B. Serial0 is up, line protocol is down

C. Serial0 is down, line protocol is up

D. Serial0 is down, line protocol is down

3. Which of the following cannot appear in the output ofshow interface serial?

A. Serial0 is up, line protocol is up

B. Serial0 is up, line protocol is down

C. Serial0 is down, line protocol is up

D. Serial0 is down, line protocol is down

4. Which of the following is offered by PPP but not by HDLC?

A. PAP

B. multilink capabilities

C. dialer callback

D. CHAP

5. Name both debug commands that could produce the following output.

2d04h: Se1 CHAP: O CHALLENGE id 82 len 23 from “R3”
2d04h: Se1 CHAP: I CHALLENGE id 222 len 23 from “R1”
2d04h: Se1 CHAP: O RESPONSE id 222 len 23 from “R3”
2d04h: Se1 CHAP: I RESPONSE id 82 len 23 from “R1”
2d04h: Se1 CHAP: O SUCCESS id 82 len 4
2d04h: Se1 CHAP: I SUCCESS id 222 len 4

“debug ppp negotiation” and “debug ppp authentication”.

The debug ppp negotiation command will give more information.

6. What is the net result of the following command?

R3(config-if)#ppp authentication chap pap

A. CHAP authentication will be attempted before PAP.

B. CHAP and PAP authentication attempts will be made at the same time.

C. If the CHAP authentication attempt results in a failed authentication, a PAP attempt will be made.

D. If the remote router isn’t running CHAP, a PAP authentication attempt will be made.

E. The password for CHAP authentication has been set to “pap”.

7. What protocol is sometimes referred to as the manager of a PPP connection?

Link Control Protocol (LCP)

 

8. PPP allows you to select one of two compression techniques. What are they?

stacker or predictor

9. Identify the true statements.

A. PAP sends a clear-text password across the WAN.

B. PAP sends a hash result across the WAN rather than a password.

C. CHAP sends a clear-text password across the WAN.

D. CHAP sends a hash result across the WAN rather than a password.

10. What is the default encapsulation for a Cisco router serial interface?

HDLC

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CCNA And CCENT Cisco Certification Exam Training Questions — 10 Questions On Frame Relay

Posted on August 25, 2009. Filed under: CCENT Questions by Topics, CCNA, Practice Exam | Tags: , , , |

review materials

Exam source

Video Explanation

 

1. Your Frame Relay provider is guaranteeing you a certain amount of bandwidth that will be available to you at any given time. What acronym is used to describe that guaranteed bandwidth?

A. DE

B. CIR

C. LMI

D. BECN

E. FECN

 

2. A Frame Relay cloud consists of what device types?

A. Frame Relay switches acting as DCEs

B. Frame Relay switches acting as DTEs

C. Frame Relay routers acting as DCEs

D. Frame Relay routers acting as DTEs

 

3. Which of the following terms describes Frame Relay?

A. packet-switching

B. circuit-switching

C. relatively inexpensive when compared to other WAN connectivity methods

D. relatively expensive when compared to other WAN connectivity methods

 

4. What message types serve as keepalives between the DTE and DCE?

A. LMI

B. DLCI

C. DE

D. CIR

 

5. Short answer: What is the default encapsulation type of a Cisco router Serial interface?

 HDLC

6. Short answer: When LMI Autosense is in effect, what message type(s) does the DTE send to the DCE?

When LMI Autosense is in operation, the DTE will send three LMI Status messages — Type q933a, Type ANSI and Type CISCO. The DCE will respond with one LMI Status message. The DTE sees that Status message coming in, and from that point on only sends the LMI Status message type that matches the type it received from the DCE. 

7. Short answer: When LMI Autosense is in effect, what message type(s) does the DCE then send to the DTE after receiving the message(s) referred to in question 6?

When LMI Autosense is in operation, the DTE will send three LMI Status messages — Type q933a, Type ANSI and Type CISCO. The DCE will respond with one LMI Status message. The DTE sees that Status message coming in, and from that point on only sends the LMI Status message type that matches the type it received from the DCE. 

 

8. What command resulted in the following output?

LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = ANSI
  Invalid Unnumbered info 0             Invalid Prot Disc 0
  Invalid dummy Call Ref 0              Invalid Msg Type 0
  Invalid Status Message 0              Invalid Lock Shift 0
  Invalid Information ID 0              Invalid Report IE Len 0
  Invalid Report Request 0              Invalid Keep IE Len 0
  Num Status Enq. Sent 121          Num Status msgs Rcvd 94
  Num Update Status Rcvd 0              Num Status Timeouts 26

A. show frame pvc

B. show frame lmi

C. show frame timeouts

D. debug frame lmi

 

9. What command resulted in the following output?


R1#
3d04h: Serial0(out): StEnq, myseq 49, yourseen 94, DTE down
3d04h: datagramstart = 0xE329E4, datagramsize = 14
3d04h: FR encap = 0x00010308
3d04h: 00 75 95 01 01 00 03 02 31 5E

A. show frame pvc

B. show frame lmi

C. show frame dte

D. debug frame lmi

 

10. Short answer: What protocol enables dynamic Frame Relay mapping?

Inverse ARP enables dynamic Frame Relay mapping. Inverse ARP is often disabled in today’s networks, and this is done by running command “no frame-relay inverse-arp” at the interface level.

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CCNA And CCENT Practice Exam Questions — 10 Questions On The OSI And TCP/IP Models

Posted on August 25, 2009. Filed under: CCENT Questions by Topics, CCNA | Tags: , , , |

 Exam Source

 video explanation

 

1. At what layer(s) of the OSI model do authentication and encryption run?

Authentication runs at L7, the Application layer. Encryption runs at L6, the Presentation layer.

2. Identify the OSI model layer at which each of the following devices run.

A. Router — layer 3 (Network Layer)

B. Switch — layer 2 (Data Link Layer)

C. Firewall — layer 7 (Application Layer)

D. Crossover Cable — layer 1 (Physical Layer)

E. Rollover Cable — layer 1 (Physical Layer)

 

3. Which layer of the OSI model concerns itself with proper data formatting?

 Layer 6 (Presentation Layer)

4. Which of the following protocols runs at the uppermost layer of the OSI model?

A. SMTP

B. Telnet

C. FTP

D. UDP

E. SNMP

 

5. Which of the following does NOT describe the Transport layer of the OSI model?

A. TCP and UDP run here.

B. Data is sent in segments, not packets.

C. Data is sent in packets, not segments.

D. Offers connection-oriented and connectionless data transport services.

E. Routing takes place at this layer.

F. The Sequenced Packet Exchange protocol runs here.


6. Give two other common names for a Layer 2 address.

 physical address, MAC address, hardware address, and burned-in addresses (BIAs)

7. What is the basic purpose of the FCS, and at which OSI layer will we find it?

 Frame Check Sequence (FCS) is used for error detection at OSI layer 2 (Data Link layer)

8. Which layers of the OSI model map to the TCP/IP model’s Application layer?

 Layer 7 (Application Layer), layer 6 (Presentation Layer), layer 5 (Session Layer)

9. Which of the following describe TCP?

A. Connection-oriented

B. Connectionless

C. Best-effort delivery

D. Allows for error detection

E. Allows “windowing”

 

10. Which of the following describes UDP?

A. Connectionless

B. Connection-oriented

C. Runs at the Network layer of the OSI model

D. Runs at the Transport layer of the TCP/IP model

E. Best-effort delivery

F. Delivers packets

G. Delivers segments

H. Delivers frames

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