Baitap
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- Pages: 5
SKILLS EXAM Semester 1
Student name:
Class: Instructor: Date: 1st time
Score
Email : Total time: 120 minutes
Network Diagram
Switch 1
Router 1B
Router 1A E0 S0 Router 2
S0
E0
Mail Server
Switch 2
S1
S0
E1
E0 S1
Router 3
E0
S0
Router 4
E0
Switch 3 Switch 5 Station1
Switch 4
My Client
Workgroup Printer DNS Server
Page 1 of 5
Cable selection (15 points) You have some network connections and have to decide what type of cable to use for each connection, then from the given UTP cables in a box (including wrong cables), you have to choose all the cable you need (in accordance with TIA/EIA-568A/B standard) : Cable Types Straight-through cable Crossover cable Straight-through cable Crossover cable Straight-through cable
Description Connect PC to Switch Connect Router to PC Connect Router to Switch Connect Hub to Switch Connect Hub to Router
Instructor’s Remark
Section 1. IP Subnetting (40 points) 1 – Answer the following questions (20 points). Figure 1 is your company’s physical topology. Your company has received a class C network address of How many collision domains are there in the network?_______28_________ According to Figure 1, what is the maximum number of IP address needed for a network? (Assuming you will assign an IP address for each switch)? _____9___________ What will the subnet mask be? ___255.255.255.240_________ How many hosts per subnet can be used? _____14______ 2 – Determine subnets and valid host IP addresses (20 points). Fill the below table by subnets that can be created with the minimum number of subnet bit(start from subnet #0). Subnet
Sub network Address
Range of valid host IP Address
Broadcast Address
Usable (Y/N)
Used (Y/N)
0
192.168.1.0
192.168.1.1 - 192.168.1.14
192.168.1.15
N
N
1
192.168.1.16
192.168.1.17 - 192.168.1.30
192.168.1.31
Y
Y
2
___.___.___.32
___.___.___.33 - ___.___.___.46
___.___.___.47
Y
N
3
___.___.___.48
___.___.___.49- ___.___.___.62
___.___.___.63
Y
Y
4
___.___.___.64
___.___.___.65 - ___.___.___.78
___.___.___.79
Y
Y
5
___.___.___.80
___.___.___.81- ___.___.___.94
___.___.___.95
Y
Y
6
___.___.___.96
___.___.___.97 - ___.___.___.110
___.___.___.111
Y
Y
7
___.___.___.112
___.___.___.113 - ___.___.___.126
___.___.___.127
Y
Y
8
___.___.___.128
___.___.___.129 - ___.___.___.142
___.___.___.143
Y
Y
9
___.___.___.144
___.___.___.145 - ___.___.___.158
___.___.___.159
Y
Y
10
___.___.___.160
___.___.___.161 - ___.___.___.174
___.___.___.175
Y
N
11
___.___.___.176
___.___.___.177 - ___.___.___.190
___.___.___.191
Y
N
Page 2 of 5
12
___.___.___.192
___.___.___.193 - ___.___.___.206
___.___.___.207
Y
N
13
___.___.___.208
___.___.___.209 - ___.___.___.222
___.___.___.223
Y
N
14
___.___.___.224
___.___.___.225 - ___.___.___.238
___.___.___.239
Y
N
15
___.___.___.240
___.___.___.241 - ___.___.___.254
___.___.___.255
Y
N
3 – Assign an IP address and subnet mask to router interface and hosts (10 points). Fill in the following table: Interface Host
or
IP address
Subnet mask
Default gateway
Subnet Address
Router 2- E0
___.___.___.17
255.255.255.240
___.___.___.17
___.___.___.16
Switch 3
___.___.___.18
255.255.255.240
___.___.___.17
___.___.___.16
My Client
___.___.___.19
255.255.255.240
___.___.___.17
___.___.___.16
Station 1
___.___.___.20
255.255.255.240
___.___.___.17
___.___.___.16
Router 2- S0
___.___.___.49
255.255.255.240
___.___.___.50
___.___.___.48
Router 1A – S0
___.___.___.50
255.255.255.240
___.___.___.49
___.___.___.48
Router 1A – E0
___.___.___.65
255.255.255.240
___.___.___.66
___.___.___.64
Switch 2
___.___.___.67
___.___.___.65
___.___.___.64
Switch 1
___.___.___.68
255.255.255.240 255.255.255.240
___.___.___.65
___.___.___.64
Router 1B - E0
___.___.___.66
255.255.255.240
___.___.___.65
___.___.___.64
Router 1B – E1
___.___.___.81
255.255.255.240
___.___.___.81
___.___.___.80
Mail Server
___.___.___.82
255.255.255.240
___.___.___.81
___.___.___.80
Router 1B – S1
___.___.___.97
255.255.255.240
___.___.___.98
___.___.___.96
Router 4-S0
___.___.___.98
255.255.255.240
___.___.___.97
___.___.___.96
Router 4 – E0
___.___.___.113
255.255.255.240
___.___.___.113
___.___.___.112
Switch 5
___.___.___.114
255.255.255.240
___.___.___.113
___.___.___.112
Workgroup Printer
___.___.___.115
255.255.255.240
___.___.___.113
___.___.___.112
Router 1A – S1
___.___.___.129
255.255.255.240
___.___.___.129
___.___.___.128
Router 3 – S0
___.___.___.130
255.255.255.240
___.___.___.129
___.___.___.128
Router 3 – E0
___.___.___.145
255.255.255.240
___.___.___.145
___.___.___.144
Switch 4
___.___.___.146
255.255.255.240
___.___.___.145
___.___.___.144
DNS server
___.___.___.147
255.255.255.240
___.___.___.145
___.___.___.144
Page 3 of 5
Section 2. Miscellaneous (45 points) 1. Which of the following devices can an administrator use to segment their LAN? (Choose all that apply) A. Hubs B. Repeaters C. Switches D. Bridges E. Routers F. Media Converters G. All of the above 2. The TestKing corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change? A. The number of broadcast domains will be decreased. B. It will make the broadcasting of traffic between domains more efficient between segments. C. It will increase the number of collisions. D. It will prevent segment 1's broadcasts from getting to segment 2. E. It will connect segment 1's broadcasts to segment 2. 3. Which of the following are benefits of segmenting a network with a router? (Select all that apply) A. Broadcasts are not forwarded across the router. B. All broadcasts are completely eliminated. C. Adding a router to the network decreases latency. D. Filtering can occur based on Layer 3 information. E. Routers are more efficient than switches and will process the data more quickly. F. None of the above. 4. Given the choices below, which address represents a unicast address? A. 224.1.5.2 B. FFFF. FFFF. FFFF. C. 192.168.24.59/30 D. 255.255.255.255
Page 4 of 5
E. 172.31.128.255/18 5. With regards to bridges and switches, which of the following statements are true? (Choose three) A. Switches are primarily software based while bridges are hardware based. B. Both bridges and switches forward Layer 2 broadcasts. C. Bridges are frequently faster than switches. D. Switches typically have a higher number of ports than bridges. E. Bridges define broadcast domain while switches define collision domains. F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.
6. Which Layer 1 devices can be used to extend the area covered by a single LAN segment? (Select two) A. Switch B. Router C. NIC D. hub E. Repeater F. RJ-45 transceiver
Page 5 of 5
Student name:
Class: Instructor: Date: 1st time
Score
Email : Total time: 120 minutes
Network Diagram
Switch 1
Router 1B
Router 1A E0 S0 Router 2
S0
E0
Mail Server
Switch 2
S1
S0
E1
E0 S1
Router 3
E0
S0
Router 4
E0
Switch 3 Switch 5 Station1
Switch 4
My Client
Workgroup Printer DNS Server
Page 1 of 5
Cable selection (15 points) You have some network connections and have to decide what type of cable to use for each connection, then from the given UTP cables in a box (including wrong cables), you have to choose all the cable you need (in accordance with TIA/EIA-568A/B standard) : Cable Types Straight-through cable Crossover cable Straight-through cable Crossover cable Straight-through cable
Description Connect PC to Switch Connect Router to PC Connect Router to Switch Connect Hub to Switch Connect Hub to Router
Instructor’s Remark
Section 1. IP Subnetting (40 points) 1 – Answer the following questions (20 points). Figure 1 is your company’s physical topology. Your company has received a class C network address of How many collision domains are there in the network?_______28_________ According to Figure 1, what is the maximum number of IP address needed for a network? (Assuming you will assign an IP address for each switch)? _____9___________ What will the subnet mask be? ___255.255.255.240_________ How many hosts per subnet can be used? _____14______ 2 – Determine subnets and valid host IP addresses (20 points). Fill the below table by subnets that can be created with the minimum number of subnet bit(start from subnet #0). Subnet
Sub network Address
Range of valid host IP Address
Broadcast Address
Usable (Y/N)
Used (Y/N)
0
192.168.1.0
192.168.1.1 - 192.168.1.14
192.168.1.15
N
N
1
192.168.1.16
192.168.1.17 - 192.168.1.30
192.168.1.31
Y
Y
2
___.___.___.32
___.___.___.33 - ___.___.___.46
___.___.___.47
Y
N
3
___.___.___.48
___.___.___.49- ___.___.___.62
___.___.___.63
Y
Y
4
___.___.___.64
___.___.___.65 - ___.___.___.78
___.___.___.79
Y
Y
5
___.___.___.80
___.___.___.81- ___.___.___.94
___.___.___.95
Y
Y
6
___.___.___.96
___.___.___.97 - ___.___.___.110
___.___.___.111
Y
Y
7
___.___.___.112
___.___.___.113 - ___.___.___.126
___.___.___.127
Y
Y
8
___.___.___.128
___.___.___.129 - ___.___.___.142
___.___.___.143
Y
Y
9
___.___.___.144
___.___.___.145 - ___.___.___.158
___.___.___.159
Y
Y
10
___.___.___.160
___.___.___.161 - ___.___.___.174
___.___.___.175
Y
N
11
___.___.___.176
___.___.___.177 - ___.___.___.190
___.___.___.191
Y
N
Page 2 of 5
12
___.___.___.192
___.___.___.193 - ___.___.___.206
___.___.___.207
Y
N
13
___.___.___.208
___.___.___.209 - ___.___.___.222
___.___.___.223
Y
N
14
___.___.___.224
___.___.___.225 - ___.___.___.238
___.___.___.239
Y
N
15
___.___.___.240
___.___.___.241 - ___.___.___.254
___.___.___.255
Y
N
3 – Assign an IP address and subnet mask to router interface and hosts (10 points). Fill in the following table: Interface Host
or
IP address
Subnet mask
Default gateway
Subnet Address
Router 2- E0
___.___.___.17
255.255.255.240
___.___.___.17
___.___.___.16
Switch 3
___.___.___.18
255.255.255.240
___.___.___.17
___.___.___.16
My Client
___.___.___.19
255.255.255.240
___.___.___.17
___.___.___.16
Station 1
___.___.___.20
255.255.255.240
___.___.___.17
___.___.___.16
Router 2- S0
___.___.___.49
255.255.255.240
___.___.___.50
___.___.___.48
Router 1A – S0
___.___.___.50
255.255.255.240
___.___.___.49
___.___.___.48
Router 1A – E0
___.___.___.65
255.255.255.240
___.___.___.66
___.___.___.64
Switch 2
___.___.___.67
___.___.___.65
___.___.___.64
Switch 1
___.___.___.68
255.255.255.240 255.255.255.240
___.___.___.65
___.___.___.64
Router 1B - E0
___.___.___.66
255.255.255.240
___.___.___.65
___.___.___.64
Router 1B – E1
___.___.___.81
255.255.255.240
___.___.___.81
___.___.___.80
Mail Server
___.___.___.82
255.255.255.240
___.___.___.81
___.___.___.80
Router 1B – S1
___.___.___.97
255.255.255.240
___.___.___.98
___.___.___.96
Router 4-S0
___.___.___.98
255.255.255.240
___.___.___.97
___.___.___.96
Router 4 – E0
___.___.___.113
255.255.255.240
___.___.___.113
___.___.___.112
Switch 5
___.___.___.114
255.255.255.240
___.___.___.113
___.___.___.112
Workgroup Printer
___.___.___.115
255.255.255.240
___.___.___.113
___.___.___.112
Router 1A – S1
___.___.___.129
255.255.255.240
___.___.___.129
___.___.___.128
Router 3 – S0
___.___.___.130
255.255.255.240
___.___.___.129
___.___.___.128
Router 3 – E0
___.___.___.145
255.255.255.240
___.___.___.145
___.___.___.144
Switch 4
___.___.___.146
255.255.255.240
___.___.___.145
___.___.___.144
DNS server
___.___.___.147
255.255.255.240
___.___.___.145
___.___.___.144
Page 3 of 5
Section 2. Miscellaneous (45 points) 1. Which of the following devices can an administrator use to segment their LAN? (Choose all that apply) A. Hubs B. Repeaters C. Switches D. Bridges E. Routers F. Media Converters G. All of the above 2. The TestKing corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change? A. The number of broadcast domains will be decreased. B. It will make the broadcasting of traffic between domains more efficient between segments. C. It will increase the number of collisions. D. It will prevent segment 1's broadcasts from getting to segment 2. E. It will connect segment 1's broadcasts to segment 2. 3. Which of the following are benefits of segmenting a network with a router? (Select all that apply) A. Broadcasts are not forwarded across the router. B. All broadcasts are completely eliminated. C. Adding a router to the network decreases latency. D. Filtering can occur based on Layer 3 information. E. Routers are more efficient than switches and will process the data more quickly. F. None of the above. 4. Given the choices below, which address represents a unicast address? A. 224.1.5.2 B. FFFF. FFFF. FFFF. C. 192.168.24.59/30 D. 255.255.255.255
Page 4 of 5
E. 172.31.128.255/18 5. With regards to bridges and switches, which of the following statements are true? (Choose three) A. Switches are primarily software based while bridges are hardware based. B. Both bridges and switches forward Layer 2 broadcasts. C. Bridges are frequently faster than switches. D. Switches typically have a higher number of ports than bridges. E. Bridges define broadcast domain while switches define collision domains. F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.
6. Which Layer 1 devices can be used to extend the area covered by a single LAN segment? (Select two) A. Switch B. Router C. NIC D. hub E. Repeater F. RJ-45 transceiver
Page 5 of 5
