| To help you prepare for total success on your | | | | This may seen trivial, but when you have a |
| Cisco certification exams, here's a new set | | | | long command entry interrupted by a console |
| of CCNA, CCNP, Security, and CCENT practice | | | | message, you'll wonder how to prevent that |
| exam questions! Answers are at the bottom | | | | from happening. (After you stop yelling at |
| of the page. Enjoy! | | | | the router, that is.) |
| | | | |
| CCNA Certification: | | | | By configuring the logging synchronous |
| | | | command on the console port, you're telling |
| What command results in the following output? | | | | the router to hold such messages until it |
| | | | detects no input from the keyboard and no |
| R3# | | | | other output from the router, such as a show |
| | | | command's output. |
| 00:11:37: RIP: received v2 update from | | | | |
| 172.12.123.1 on Serial0 | | | | R1(config)#line console 0 |
| | | | |
| 00:11:37: 172.12.123.0/24 via 0.0.0.0 in 1 | | | | R1(config-line)#logging ?synchronous |
| hops | | | | Synchronized message output |
| | | | |
| CCENT Certification: | | | | CCNA Security / CCNP ISCW Exam: Answer: The |
| | | | options are High, Medium, and Low. In the |
| What's the basic purpose of the logging | | | | Basic Firewall Wizard, you cannot create your |
| synchronous command? | | | | own custom security levels, but you can do so |
| | | | in the Advanced Wizard. |
| CCNA Security Certification / CCNP ISCW Exam: | | | | |
| | | | CCNP BSCI Answer: By default, EIGRP uses up |
| When configuring a basic firewall in SDM, | | | | to 50 percent of a given interface's |
| what are the three options for the | | | | bandwidth. If you wish to change this |
| preconfigured security levels? Can you create | | | | default, it can be done with the |
| your own custom security levels? | | | | interface-level command ip bandwidth-percent |
| | | | eigrp. |
| CCNP Certification / BSCI Exam: | | | | |
| | | | R1(config)#int s0 |
| In the following output, describe.... | | | | |
| | | | R1(config-if)#ip bandwidth-percent eigrp ? |
| 1. Why we would use this command in the first | | | | |
| place | | | | Autonomous system number |
| | | | |
| 2. The meaning of "100" | | | | R1(config-if)#ip bandwidth-percent eigrp 100 |
| | | | ? |
| 3. The meaning of "300" | | | | |
| | | | Maximum bandwidth percentage that EIGRP may |
| 4. The default setting for this particular | | | | use |
| value, and what we're changing it to. | | | | |
| | | | R1(config-if)#ip bandwidth-percent eigrp 100 |
| R1(config-if)#ip bandwidth-percent eigrp 100 | | | | 300 |
| 300 | | | | |
| | | | I am showing you this command's values with |
| CCNP Certification / BCMSN Exam: | | | | IOS Help to remind you that you should |
| | | | develop the habit of always taking a few |
| What router redundancy protocol is defined by | | | | extra seconds to check the values - because |
| RFC 2281? | | | | in this command, the values look really |
| | | | strange. How in the world can I set EIGRP 100 |
| CCNP / ONT Exam: | | | | to use 300% of an interface's bandwidth? And |
| | | | why would I ever do that? |
| IntServ uses RSVP, but DiffServ does not. | | | | |
| What does DiffServ use in place of RSVP? | | | | There is always the chance that the actual |
| | | | physical speed of the interface exceeds the |
| Here are the answers! | | | | logical setting. You could take an interface |
| | | | with a 512 kbps interface and give it a |
| CCNA: Answer: That's the output of debug ip | | | | logical setting of 56 kbps. |
| rip. | | | | |
| | | | If you then wanted the line to allow EIGRP to |
| CCENT: Answer: When the router wants you | | | | use 168 kbps of the physical bandwidth, you'd |
| to know something, it wants you to know right | | | | set the bandwidth-percent value to 300, which |
| now. If the router sends a message to the | | | | allocates 300% of 56kbps to EIGRP traffic - |
| console while you're entering a command, by | | | | which is 3 x 56, or 168. |
| default the router will interrupt your work | | | | |
| to show you this message. | | | | I know it sounds crazy, so here's the proof |
| | | | that you can actually do this: |
| In the following example, I opened a Serial | | | | |
| interface, which will always result in at | | | | R3(config)#interface serial0 |
| least two messages relating to the physical | | | | |
| and logical state of the interface. I started | | | | R3(config-if)#bandwidth 56 |
| typing a sentence immediately after I opened | | | | |
| the interface to show you what happens. I've | | | | R3(config-if)#ip bandwidth-percent eigrp ? |
| bolded the sentence I was entering. | | | | |
| | | | Autonomous system number |
| R1(config)#int s0 | | | | |
| | | | R3(config-if)#ip bandwidth-percent eigrp 100 |
| R1(config-if)#no shut | | | | ? |
| | | | |
| R1(config-if)#^Z | | | | Maximum bandwidth percentage that EIGRP may |
| | | | use |
| R1#so here i am | | | | |
| | | | R3(config-if)#ip bandwidth-percent eigrp 100 |
| 4d04h: %SYS-5-CONFIG_I: Configured from | | | | 300 |
| console by consoletyp | | | | |
| | | | BCMSN: Answer: Our old friend HSRP - the Hot |
| 4d04h: %LINK-3-UPDOWN: Interface Serial0, | | | | Standby Routing Protocol. |
| changed state to uping and | | | | |
| | | | ONT: Answer: DiffServ uses PHB - Per-Hop |
| 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on | | | | Behavior. |
| Interface Serial0, changed state to upi've | | | | |
| been interrupted quite badly! | | | | Look for more Cisco certification exam |
| | | | practice question sets and fully-illustrated |
| 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on | | | | tutorials on my website as well as the one |
| Interface Serial0, changed state to down | | | | you're on right now! |
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