Cybersecurity Question Paper

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lnzv_0502

Computer Science

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Explanation & Answer

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Part 1:
Answer 1: ARP stands for Address Resolution protocol
the purpose of ARP is that it is used to resolve IP addresses to MAC addresses.
Answer 2: DNS protocol stands for Domain Network System protocol.
It resolves domain names to I.P. addresses. which means human and network devices can
access the website by using website hostnames, instead of IP addresses.
Answer 3: fields found 802.1Q subheader are: TRID, PRI, CFI, VID.
TPID: Tag Protocol Identifier has a value of 0X8100. 8100 is actually the identifier odf
802.1Q. It is a 2 bytes field.
PRI: Priority is a 3 bit feild, Used for quality of the service.
CFI: Canonical format indicator is a single bit feild. used to ensure compability btw token
ring networks and ethernet. In present time every switch is ethernet. So, this feild is never
used.
VID: VLAN ID is a 12 bit feild specify the VLAN which frame belong. It is in the range
from 0 to 4095.
Answer 4: VTP is a CISCO proprietary protocol, used to share the VLAN configurations
with all the switches and to maintain consistency throughout that network. VTP manages
the addition,deletion and renaming of VLANs across the network.
Answer 5: Spanning Tree Protocol is a layer 2 protocol that runs on bridges and switches
and builds a loop-free logical topology. It ensure that there will be only one logical path
btw al...


Anonymous
I was struggling with this subject, and this helped me a ton!

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