Cisco CCNA,CCNP,CCENT,and CompTIA Network And Security Questions: VLANs,SYN Attacks,And More!

Letâ s test your comprehension of important topics such as SYN attacks and VLANs for your Cisco CCNA, CCNP, and CCENT exams, as bright-eyed as the CompTIA Security+ and Network+ certification exams!

CCNA / CCENT / CompTIA Network+ Certification:

Host A and Host B are in the same VLAN. Host C and Host D are in a at odds VLAN. Host A sends a broadcast. How many other hosts will receive it?

A. Zero

B. One

C. Two

D. Three

Answer: B. The other host in the same VLAN, Host B, will assume it. Broadcasts are not forwarded to other VLANs.


Security+ Certification:

Briefly describe a "SYN attack".

Answer: The intruder will assemble a series of SYN requests, and the soon-to-be-victimized network device sends a SYN-ACK in response. The slogan then waits for an ACK, however that never comes. These unfinished connections conclusion in the network device not duration able to grip SYN request from legitimate network hosts, since its buffers will be overwhelmed with the false (and unfinished) requests.



CCNP Certification / BSCI Exam:

If an IPv6 address begins with "FF", what type of address is it?

A. broadcast

B. unicast

C. multicast

D. MACcast

Answer: C. That's a multicast. There's no such thing as a MACcast. But there should be. ;)


CCNP Certification / BCMSN Exam:

Short answer: What interface-level command takes a port operating at L3 and places it into L2 operating mode?

Answer: switchport. To change the harbour back to a routed port, capitalization no switchport.


CCNP Certification / ISCW Exam:

Short answer: You're going to write a policy map that will be applied to a Serial interface running at T1 speed. By default, how much bandwidth can you proclaim in that policy?

Answer: The speed of a T1 line is 1544 kbps, nevertheless by default one shot 75% of that bandwidth can be distributed in a policy map - that's 1158 kbps (1544 * .75).

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