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networking
final
57
Computer Science
Undergraduate 3
05/13/2015

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Term
a flash drive is an example of a
Definition
secondary storage
Term
post instructions are read from
Definition
bios
Term
what is speed of cpu that ticks 1.5billion times every second of our time?
Definition
1.5 ghz
Term
bus operates at 32mbs what is speed in MBS
Definition
32/8=4
Term
MBR is stored in secondary storage true/false?
Definition
true
Term
a hub is a repeater? true/false?
Definition
true
Term
give a cpu with 4-bit address bus and 8-bit data bus.
what is the maximum size of physical memory?
Definition
4^2 = 16bit
Term
give a cpu with 4-bit address bus and 8-bit data bus.
what is the capacity of each location?
Definition
8bit
Term
would IRQ or DMA be used for a network interface card to interact with the system.
Definition
DMA
Term
you can only have two internal hard drives attached to a SCSI bus? true/false?
Definition
false
Term
patch panel acts like a hub? t/f?
Definition
false
Term
provide hex for mac address.
0001 1111 0010 1110 0011 1101 0100 1100 0101 1011 0110 1010
Definition
1 f 2 e 3 d 4 c 5 b 6 a
Term
what is the destination max address of an arp frame?
Definition
the location where the data of a frame is being sent to.
Term
workstation: 1
mac:b1b1b1

workstation: 2
mac:b2b2b2

write a frame from 2 to 1. data is 1234 and crc is 3b24
Definition
destination:b1b1b1
source:b2b2b2
data:1234
crc:3b24
Term
when a hub receives a frame, it will check the destination mac address of the frame and then forwards the frame only out the corresponding port that is connected to the destination computer. t/f?
Definition
false
Term
a hub operates at what layer?
Definition
physical layer.
Term
what layer does a switch operate at?
Definition
link layer
Term
an active hub is the same as a switch. t/f?
Definition
false
Term
what standards 568A or 568B do you use on each side of a crossover cable?
Definition
use one of them on each side of the wire.
Term
make a switch table.
A BB:B1 is connected to port 1
B BB:B2 is connected to port 2
switch 2 which has BB:B4 and BB:B3 is connected to port 11
Definition
1-BB:B1
2-BB:B2
11-BB:B4
11-BB:B3
Term
convert the ip address to decimal format.
11000000.10101000.01010111.00001111
Definition
192.168.87.15
Term
default gateway is the ip address for the destination workstation. t/f?
Definition
false
Term
given the mask 255.255.255.0 list all unique subnet address.
192.168.3.13
192.168.3.218
192.168.4.5
192.168.7.4
192.168.3.17
Definition
192.168.3.0
192.168.4.0
192.168.7.0
Term
what ip address does a station arp for if the destination ip address of the packet is outside of its own subnet?
Definition
default gateway
Term
a router connects to.
Definition
lans
Term
a switch is used to connect.
Definition
computers
Term
give ip address 192.167.3.15 and mask 255.255.255.0
what is the subnet address?
provide another ip on this subnet?
what is maximum number of hosts?
Definition
192.167.3.0
192.167.3.14
2^8 because 8 bits are available. = 256.
Term
what connects to what?
computers and routers and switches.
Definition
computers -> switch -> routers.
Term
a new frame is created every time a packet passes through a router. t/f?
Definition
true
Term
which transport layer protocol guaranties delivery?
Definition
TCP
Term
name the 7 OSI layers, and example, and whether its e2e or p2p.
Definition
1.physical HUB p2p
2.network Switch p2p
3.link Router p2p
4.transport UDP/TCP e2e
5.session HTML programs e2e
6.presentation HTML programs e2e
7.application HTML programs e2e
Term
what topology does a physical and logical use?
Definition
physical: bus topology
logical: ring topology
Term
the most commonly used physical topology is the.
Definition
star toplogy
Term
a physical star topology can be used for a logical ring topology. t/f?
Definition
true
Term
what does base stand for?
Definition
base band
Term
what is the segment length of a 10base5 network in meters?
Definition
500 meters
Term
what is the bandwidth of a 100base2 network in mbps?
Definition
100mbps
Term
which of the following uses physical start topology?
10BaseT
10Base2
10Base5
Definition
10BaseT
Term
main disadvantages of a start topology
Definition
lots of cables
Term
why do you create an AllTeam group and why?
Definition
so if you change one setting for this folder the individual setting for them will change also.
Term
of the following wireless standards which standard is better?
54mbps at 2.4ghz
54mbps at 5ghz
Definition
54mbps at 2.4ghz
Term
Ethernet NICs synchronize their activates by a shared clock. t/f?
Definition
false
Term
preamble and SOF bytes in a frame are used for
Definition
determine the beginning of the frame
Term
what medium access method used by Ethernet?
Definition
CSMA/CD
Term
once a collision takes place on a ethernet network, the colliding stations will negotiate and identify in which order they will each transmit. t/f?
Definition
false
Term
as the number of stations increase on a ethernet network, the network probability of collision remains the same. t/f?
Definition
false
Term
what does cd stand for in CSMACD
Definition
collision detection
Term
802.3 is a lan standard. t/f?
Definition
true
Term
the ethernet v2.0 frame and the IEEE802.3 frames cannot coexist on a single LAN. t/f?
Definition
false
Term
is CRC an error correcting or error detecting code?
Definition
error detecting code.
Term
which ones of the following devices extend the collision domain of a network?

repeaters
switches
hubs
bridges
Definition
switches
bridges
Term
what layer of the OSI does a bridge operate?
Definition
link layer
Term
what is the maximum recommended number of stations in a Ethernet collision domain?
Definition
1024
Term
my computer:
192.168.3.24
255.255.255.240
gateway: 192.168.3.17
mac:aaaa

the computer would like to send a packet to another computer with ip address of 192.168.3.34. we know that the destination mac address is bbbb and the gateway mac address is cccc. provide the information for the frame that is sent.
Definition
destination: cccc
source: aaaa
destination ip:192.168.3.34
source ip: 192.168.3.24
Term
given the ip range 192.168.0.0 to 192.168.255.255 and subnet 255.255.192.0

how many unique subnets?
provide a list of all available subnets
Definition
unique subnets: 2
available addresses:
255.255.128.0
255.255.64.0
Term
the stations with ip address 192.168.33.7 and 192.168.64.7 on the same subnet? t/f?
Definition
false
Term
the stations with ip address 192.168.33.7 and 192.168.56.5 on the same subnet? t/f?
Definition
true
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