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How many bits are in a mac address?
48
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Describe what trunking mode is in regards to a switch port
Trunks is where the switch does not strip the VLAN tag when sending out packets
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I have a RAID 5, With 14 500gig drives, I have one drive fail yesterday. How many more drives can fail before permanent data loss?
NONE, raid 5 can only have one drive failier
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Compare and contrast VLANs, and SUBNETS
A VLAN is a virtual LAN that usually sits on top of existing architecture, that hides the information from the other LANs. Where a subnet in an internal lan, but every ip knows what the others are
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NAT, RFC1918, and other reserved address spaces all of these have a common goal, what is the goal and why is it important to the world?
The goal is the have less used up Public IPs
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What OSI layer does HTTP live on?
Layer 5 - Session
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What is the difference between TCP and UDP?
- TPC is more secure because it implements a 3 way hand shake process, to make sure that all of the packets got to the destination.
- UDP is faster but not as reliable because it just sends all of the data
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What is a routing loop?
A routing loop is where one computer sends a packet to another, and that computer sends it back to the first computer, and then the first computer sends it back in a continues loop.
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I have a RAID 6, with 7 400gig drives, what is my overhead?
800GIGs, (2 Drives)
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What is collision domain
Where packets going down the same route can collide, because there is nothing controlling the flow of data.
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What is the very simple method of countering a DDOS attack? Are there any addition side affects of implementing this method?
- You can implament null routing, where it will send the attacking IP, or IP ranges to an invalid destination.
- If there is a legit IP that is within the null range, it will all be sent to the invalid destination.
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Fill in the empty spaces of the process:
A) Host checks to so if the the destination IP address is on the same network
B)
C)
D) Host sends the packet to the resolved destinations MAC address
- B) selects the gateway
- C) ARPS for the destinations MAC address
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How is a MAC address used in regards of identification?
- First 24bits = Manufacture number
- Last 24bits = Unique NIC number
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What is the fault tolerance of a RAID 10?
Best case is 50%, worst case is 1 disk
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What command line tool might I use to change IP addresses, add routes, and view specific network adapter configuration information?
netsh
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What command line tool might I use to view all the current connections on the NIC?
netstat
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When looking at a directory with hundred of files, what modifiers might I use along with the DIR command to view the information in a parsed format?
-p
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My Rackspace environment requires 3 segmented networks to support my security requirements. How many interfaces will my firewall need to have in order to properly serve my need?
5
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