| Let's test your knowledge of topics such as SYN | | | | unfinished connections result in the network device not |
| attacks and VLANs for your Cisco CCNA, CCNP, and | | | | being able to accept SYN request from legitimate |
| CCENT exam prep. There are questions for the | | | | network hosts, since its buffers will be overwhelmed |
| Network+ and Security+ exam as well, and A+ | | | | with the false (and unfinished) requests.CCNP |
| questions are on the way! | | | | Certification / BSCI Exam:If an IPv6 address begins |
| Let’s test your knowledge of important topics | | | | with "FF", what type of address is it?A. broadcastB. |
| such as SYN attacks and VLANs for your Cisco | | | | unicastC. multicastD. MACcastAnswer: C. That's a |
| CCNA, CCNP, and CCENT exams, as well as the | | | | multicast. There's no such thing as a MACcast. But |
| CompTIA Security+ and Network+ certification | | | | there should be. ;)CCNP Certification / BCMSN |
| exams!CCNA / CCENT / CompTIA Network+ | | | | Exam:Short answer: What interface-level command |
| Certification:Host A and Host B are in the same VLAN. | | | | takes a port operating at L3 and places it into L2 |
| Host C and Host D are in a different VLAN. Host A | | | | operating mode?Answer: switchport. To change the |
| sends a broadcast. How many other hosts will receive | | | | port back to a routed port, use no switchport.CCNP |
| it?A. ZeroB. OneC. TwoD. ThreeAnswer: B. The other | | | | Certification / ISCW Exam:Short answer: You're going |
| host in the same VLAN, Host B, will receive it. | | | | to write a policy map that will be applied to a Serial |
| Broadcasts are not forwarded to other | | | | interface running at T1 speed. By default, how much |
| VLANs.Security+ Certification:Briefly describe a "SYN | | | | bandwidth can you assign in that policy?Answer: The |
| attack".Answer: The intruder will generate a series of | | | | speed of a T1 line is 1544 kbps, but by default only |
| SYN requests, and the soon-to-be-victimized network | | | | 75% of that bandwidth can be distributed in a policy |
| device sends a SYN-ACK in response. The device | | | | map - that's 1158 kbps (1544 * .75). |
| then waits for an ACK, but that never comes. These | | | | |