Review

Report
Week 1 -12
Review
 In an IPv4 environment, what
information is used by the router to
forward data packets from one interface
of a router to another?
a. destination network address
b. source network address
c. source MAC address
d. well known port destination address
 Which portion of the network layer
address does a router use to forward
packets?
a. host portion
b. broadcast address
c. network portion
d. gateway address
 Example: 123.20.30.40/24
 What is the purpose of a default gateway?
a. physically connects a computer to a network
b. provides a permanent address to a computer
c. identifies the network to which a computer is
connected
d. identifies the logical address of a networked
computer and uniquely identifies it to the rest of the
network
e. identifies the device that allows local network
computers to communicate with devices on other
networks
Review: Default Gateway
LAN
 When a LAN is connected
to a Router, Default
Gateway is the address of
router interface connected
to that LAN.
Default Gateway
 The IP address and subnet
mask is on the same
network as the hosts on that
network
Router
Router
Select the characteristics specified by 10BaseT.
(Choose three.)
•twisted pair cable
•T style connectors
•baseband transmission
•10 gigabits per second data rate
•10 megabits per second data rate
decimal encoded data transmission
At which layer of the OSI model do
the cabling aspects of a LAN exist?
•Transport
•Network
•Data link
•Physical
Rank the following transmission media (optical
fibre, coaxial cable and twisted pair according
to their channel capacity from the highest to
the lowest.
•Optical Fibre, Coaxial Cable, Twisted Pair.
•Optical Fibre, Twisted Pair, Coaxial cable.
•Twisted Pair, Coaxial Cable, Optical Fibre.
•Coaxial cable, Optic fibre, Twisted Pair.
•None of the above
•What topology is illustrated in the
diagram below?
a
b
C
D
E
Star
Bus
Tree
Ring
None of the above
•Which of the following IP
Network addresses is a reserved
address?
a. 127.0.0.0
b. 130.50.0.0
c. 197.65.10.0
d. 4.0.0.0
e. None of the above
Also called Loopback Address or local host
Address
•Which LAN standard has the highest
data rate?
•10Base5
•10Base-T
•Twisted Pair Token Ring
•FDDI (Fiber Distributed Data Interface)
•None of the above
Unit of data rate ?
bps, kbps, Mbps, Gbps
Type of
cable 2
Type of
cable 1
Topology:
Connection between Switch and hosts (2 and 3)
Router and Host 1
•As a user’s message moves from the lowest
layer to the top layer of the OSI Model,
protocol headers are:
• Added
• Removed
• Rearranged
• Modified
• None of the above
What is the above process called ?
•In the OSI model, which is the fourth
layer from bottom.
a
Session
b
Transport
c
Application
d
Physical
e
None of the above
Subnets
223.1.1.2
How many?
223.1.1.1
223.1.1.4
223.1.1.3
223.1.9.2
223.1.7.0
223.1.9.1
223.1.7.1
223.1.8.1
223.1.8.0
223.1.2.6
223.1.2.1
223.1.7.0/24
223.1.3.27
223.1.2.2
223.1.3.1
223.1.3.2
Network Layer
4-40
1. How many different networks? 6
2. What is the class of IP Address? Class C
3. What is the default subnet mask 255.255.255.0
4. How many bits borrowed from host portion to
provide required number of subnets? 3
Stage 1
Stage 2
Stage 3
Which Protocol is this – Identify Stages 1-3
Which layer of OSI model does it work at?
What type of cable media does it use?
3. What layer does it refer to?
1. What are these
2. What is this
Which is a Class C Address?
A. 10.10.14.118
B. 135.23.112.57
C. 191.200.199.199
D. 204.67.118.54
For a given IP address 172.16.10.22 and mask
255.255.255.240, answer the following:
•What is the subnet IP address?
•What is the broadcast IP address?
•What is a valid range for a hosts IP addresses

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