Unit 5 Assignments 1 2

Topics: Ethernet, Gigabit Ethernet, Network switch Pages: 5 (642 words) Published: July 27, 2015
Assignment 1: Exploring LAN Switches

1.
Vendor/Manufacturer
Model Number
Price
Available From (website)
NetGear
G5605NA
$36.99
http://www.amazon.com
Linksys/Cisco
SE2500
$39.99
http://www.linksys.com
Monoprice
M1008D
$23.21
http://www.monoprice.com

2.
Vendor/Manufacturer
Model Number
Price
Available From (website)
NetGear
FV318
$120.99
http://www.bestbuy.com
Cisco/Linksys
BEFSX41
$79.95
http://www.amazon.com/
Cisco
RV110W-A-NA-K9
$62.78
http://www.amazon.com/

3.
Vendor/Manufacturer
Model Number
Price
Available From (website)
Cisco
SG200-26P
$469.99
http://www.amazon.com/
NetGear
ES750T2
$365.00
http://www.store.netgear.com
Juniper
EX2200
$890.10
http://www.amazon.com/

4.
Vendor/Manufacturer
Model Number
Price
Available From (website)
D-Link 24-Port 10 Gigabit L2+ Managed Aggregation Switch
DXS-3600-32S/SI-LW
$5489.00
http://www.ELVESsupply.com
Cisco Catalyst 2960 and 2960-S Series Fixed Switches
WS-C2960-24TT-L
$1046.99
http://www.sophiesystems.com
D-Link xStack StorageDSN-4000 iSCSI SAN Expansion Array
DSN-4000
$2,924.95
http://www.bhphotovideo.com

Assignment 2: Ethernet Local Area Networks Review
1. C) Token Ring
2. D) 802.11 LANs
3. B) 4 Gbps
4. A) 1000Base-LX, MM fiber, 550 meters
5. B) The links could use any Ethernet LAN standard.
6. E) None of the answers is correct
7. D) 802.3z
8. A) Overall download trend for computer technology prices overtime. D) A decrease in prices of fiber-optic cabling. 9. A) Autonegotiation works on the switch-to-PC A link, causing PC A to run at 100 Mbps. C) Autonegotiation fails to work on the switch-to-PC B link, causing the switch to run at 10 Mbps. 10. A) PC A uses full duplex as the result of the autonegotiation process working. D) Switch port G2 uses full duplex because autonegotiation works and detects that PC B only supports full duplex. 11. C) UTP typically supports a maximum cable length of 100 meters across all UTP standards at all speeds. 12. C) A UTP link between two distribution switches. D) A fiber link between two distribution switches. 13. C) The Type field identifies the data as an IP packet.

14. A) Any nodes in the branch LAN that receive this frame use the FCS field to help detect errors. C) The Preamble and SFD fields both come before the Destination Address field in the header. 15. A) 48 bits in length

16. A) The IEEE B) Ethernet vendors
17. D) The OUI
18. C) Forwards the frame out port G4 only
19. B) Floods the frame out ports G1, G2, G3, and G4
20. C) SW1 has received no frames from any devices yet.
Define Key Terms
Ethernet LANs: Collection of devices which use IEEE Ethernet standards at the physical and data link layers, so that the devices can send Ethernet frames to each other. 802.3: The name of the original IEEE Ethernet standard, as well as the overall base name of all IEEE Ethernet LAN working committees. Fast Ethernet: Informal name for one particular standard, originally defined formally as 802.3u, which was the first Ethernet standard to surpass the original 10-Mbps speed to run at 100 Mbps. Gigabit Ethernet: Informal name for one particular standard, defined formally in 802.3z (for fiber) and 802.3ab (for UTP), with a speed of 1 Gbps. Autonegotiation: A process defined by the IEEE so that nodes on the same Ethernet link can exchange messages for the purpose of choosing the best speed and duplex option that both nodes support. Ethernet frame: Includes the Ethernet data link layer header and trailer plus the data and other higher-layer headers that need to be sent through the LAN. MAC address: Data link layer address, 48 bits in length, usually written as 12 hexadecimal digits and used to represent different devices connected to a LAN. MAC address table: On a LAN switch, a table of addresses and local switch ports that the switch uses when making its decision of where to forward Ethernet frames that arrive at the switch.
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