CCNA 640-802 Ver 22-09-2008 page6
QUESTION 51
You work as a network technician at Certkiller .com. You have been assigned the task of designing a new Certkiller internetwork. The main priority is the achieve the highest reliability available, however not at all costs. Certkiller .com is willing to spend more dollars to avoid downtime caused by link failure. Which of the following four designs would provide some redundancy and increase reliability for all four sites, but would cost less than a fully redundant topology?
A. Design Certkiller A
B. Design Certkiller B
C. Design Certkiller C
D. Design Certkiller D
Answer: B
Explanation:
You can think of the partial mesh Frame Relay design as the compromise between network administrators and cost-saving managers.
Example:
QUESTION 52
You work as a network technician at Certkiller .com. You have been assigned the task of designing a new Certkiller internetwork. The main priority is to minimize the link costs and at the same time wants to ensure the branch offices with direct connectivity to the main site. Which of the following four designs is to be preferred?
A. Design Certkiller A
B. Design Certkiller B
C. Design Certkiller C
D. Design Certkiller D
Answer: C
Explanation:
Every network looks for cost efficiency. Redundancy is often sacrificed on the altar of monthly cost. Thus, the hub and spoke Frame Relay network design is one of the more common. In this configuration, you pick a centralized location (most likely, your largest, most connected office) as the "hub" of the network. All other locations are considered "spokes" and have a single virtual circuit connection back to the hub. The major advantage of this configuration is the cost. It offers the cheapest monthly price tag, which cost-cutting corporations enjoy. The disadvantages are beginning to mount against this design, however. The redundancy is sorely lacking. If a single router (the central router) loses connectivity for any reason (if the router crashes, if a trenching company cuts through the line), your entire WAN goes down. The other disadvantage of this design is beginning to eclipse even redundancy. It is the disadvantage of tandem switching. Any time the spoke offices need to reach each other, they must go through the hub office.
Example:
QUESTION 53
A Certkiller network is shown in the exhibit below:
The routers in this network are running RIPv2. Which addressing scheme would satisfy the needs of this network yet waste the fewest addresses?
A. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/26Network 3:
192.168.10.128/26Serial link 1: 192.168.20.0/24Serial link 2: 192.168.30.0/24
B. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/28Network 3:
192.168.10.80/29Serial link 1: 192.168.10.88/30Serial link 2: 192.168.10.96/30
C. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/27Network 3:
192.168.10.96/28Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30
D. Network 1: 192.168.10.0/27Network 2: 192.168.10.64/28Network 3:
192.168.10.96/29Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30
Answer: C
Explanation:
Network 1
Required Number of hosts :50
When We use the 26 bits for Network : 11111111.11111111.11111111.11000000 so 62 usable host can be in one network. 50 host for now and remaining hosts address for further growth.
Network 2
Required Number of Hosts: 20
When we use the 27 bits for Network: 11111111.11111111.1111111.11100000 so 30 usable hosts can be in one network.
Network 3
Required Number of Hosts: 10
When we use the 28 bits for Network: 11111111.11111111.11111111.11110000 so 14 usable hosts can be in one network.
Connection between CK1 , CK2 and CK3 is WAN so when you use 30 bits network IP, you will not lose any IP addresses from network since this subnet allows for only 2 host addresses.
QUESTION 54
The Certkiller network is shown below:
A technician is investigating a problem with the network shown above. These symptoms have been observed:
1. All of the user hosts can access the Internet.
2. None of the user hosts can access the server in VLAN9
3. All of the hosts can ping each other.
What could cause the symptoms?
A. Interface S0/0 on the router is down.
B. Interface Fa1/0 on the router is down.
C. Interface Fa0/5 on Certkiller 3 is down.
D. Interface Fa0/4 on Certkiller 3 is down.
E. Certkiller 2 is turned off.
F. Trunking is not enabled on the link between Certkiller 1 and Certkiller 3.
Answer: D
Explanation:
Since all user hosts have access to internet, link to router has to be up. Therefore, router interface (Fa0/1 - believe it is labeled incorrectly on diagram as Fa1/0) must be up. Since all hosts can ping each other, but none can get to VLAN 9 which is through single interface Fa0/4, this interface must be down.
Choice A: incorrect, S0/0 must be up if internet access available.
Choice B: incorrect, Fa0/1 must be up if internet access (through router) available. Choice C: incorrect, would not prevent access to VLAN9 via other routes (i.e Fa0/7, Fa0/9, Fa0/4)
Choice D: correct
Choice E: incorrect: Certkiller 2 must be up if internet access (through switch and then router) available
Choice F: incorrect: Disabled trunking on link between Certkiller 1 and Certkiller 3 would not prevent access to VLAN9 via other routes
QUESTION 55
Refer to the graphic shown below:
What symbol represents a type of device that is connected to interface FastEthernet 0/23 of the 2960 switch Sw1-2960?
A. Picture A
B. Picture B
C. Picture C
D. Picture D
Answer: D
Explanation:
Some of the common Cisco symbols are shown below:
Note: Choice B in this question represents an ATM switch, which is not pictured above. From the output shown in this question, we can see that there a numerous different MAC addresses associated with port Fa 0/23. This can only mean that a device with multiple hosts attached to it is plugged into this port, such as a hub or another switch.
QUESTION 56
Part of the Certkiller network topology is shown below:
Entry exhibit:
Host Certkiller A pings Host Certkiller B, which entry will be in the ARP cache of Host Certkiller A to support this transmission?
A. A
B. B
C. C
D. D
E. E
Answer: C
QUESTION 57
The Certkiller network is shown in the following exhibit:
Certkiller uses EIGRP as the routing protocol. Based on the info shown above, what path will packets take from a host on the 192.168.10.192/26 network to a host on the LAN attached to router Certkiller 1?
A. The path of the packets will be Certkiller 3 to Certkiller 2 to Certkiller 1
B. The path of the packets will be Certkiller 3 to Certkiller 1 to Certkiller 2
C. The path of the packets will be both Certkiller 3 to Certkiller 2 to Certkiller 1 AND Certkiller 3 to Certkiller 1
D. The path of the packets will be Certkiller 3 to Certkiller 1
E. None of the above
Answer: D
Explanation:
Based on the routing table of Certkiller 3, the best path to the Certkiller 1 LAN is shown on the first routing entry (192.168.10.64). Certkiller 3 will use the Serial 0/0 interface to route traffic to this destination, with the next hop IP address of 192.168.10.9, which is the network used between Certkiller 3 and Certkiller 1, making choice D correct. Note that there is only one routing entry for this destination. If traffic were load balancing over both paths, then both would be displayed in the routing table.
QUESTION 58
Refer to the following exhibit:
Based on the diagram shown above, what is the correct addressing for a frame and packet received by Host Certkiller B from Host Certkiller A?
A. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e8f.088a
Destination IP: 192.168.60.5
Source IP: 192.168.60.1
B. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e8f.088a
Destination IP: 192.168.60.5
Source IP: 192.168.24.5
C. Destination MAC: 0011.43da.2c98
Source MAC: 00b0.d0ef.5f6a
Destination IP: 192.168.60.5
Source IP: 192.168.24.5
D. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e97.af4e
Destination IP: 192.168.60.5
Source IP: 192.168.60.2
E. None of the above
Answer: B
Explanation:
When packets leave from the host, the packets contains the source MAC and IP of the host address. The source and destination IP address will not change. Because the host knows that the destination is on another subnet, it will forward the packet to the default gateway device, so the destination MAC address will be of the default gateway, which is the FA0/0 interface of router Certkiller 3.
QUESTION 59
Exhibit #1:
Please study the two exhibits carefully.
The partial frame shown above displays select header information as it arrives at the destination host. Of the following choices shown below, which one represents the correct header information in the responding frame returned to the remote host?
A. A
B. B
C. C
D. D
E. E
Answer: A
QUESTION 60 The Certkiller network is shown below:
Based on the diagram above, which destination addresses will Host A use to send data to Host B? (Choose two.)
A. The IP address of Certkiller 1
B. The IP address of Certkiller A Fa0/0
C. The IP address of Host B
D. The MAC address of Certkiller 1
E. The MAC address of Certkiller A Fa0/0
F. The MAC address of Host B
Answer: C, E
Explanation:
When sending data from one host to another, destination information will be added to every packet's header. The destination information will be the IP and MAC Address of destination host. If the destination is found outside the subnet the MAC address of the router is used. Note: The destination IP address will never change, unless NAT is
involved.
A. Design Certkiller A
B. Design Certkiller B
C. Design Certkiller C
D. Design Certkiller D
Answer: B
Explanation:
You can think of the partial mesh Frame Relay design as the compromise between network administrators and cost-saving managers.
Example:
QUESTION 52
You work as a network technician at Certkiller .com. You have been assigned the task of designing a new Certkiller internetwork. The main priority is to minimize the link costs and at the same time wants to ensure the branch offices with direct connectivity to the main site. Which of the following four designs is to be preferred?
A. Design Certkiller A
B. Design Certkiller B
C. Design Certkiller C
D. Design Certkiller D
Answer: C
Explanation:
Every network looks for cost efficiency. Redundancy is often sacrificed on the altar of monthly cost. Thus, the hub and spoke Frame Relay network design is one of the more common. In this configuration, you pick a centralized location (most likely, your largest, most connected office) as the "hub" of the network. All other locations are considered "spokes" and have a single virtual circuit connection back to the hub. The major advantage of this configuration is the cost. It offers the cheapest monthly price tag, which cost-cutting corporations enjoy. The disadvantages are beginning to mount against this design, however. The redundancy is sorely lacking. If a single router (the central router) loses connectivity for any reason (if the router crashes, if a trenching company cuts through the line), your entire WAN goes down. The other disadvantage of this design is beginning to eclipse even redundancy. It is the disadvantage of tandem switching. Any time the spoke offices need to reach each other, they must go through the hub office.
Example:
QUESTION 53
A Certkiller network is shown in the exhibit below:
The routers in this network are running RIPv2. Which addressing scheme would satisfy the needs of this network yet waste the fewest addresses?
A. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/26Network 3:
192.168.10.128/26Serial link 1: 192.168.20.0/24Serial link 2: 192.168.30.0/24
B. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/28Network 3:
192.168.10.80/29Serial link 1: 192.168.10.88/30Serial link 2: 192.168.10.96/30
C. Network 1: 192.168.10.0/26Network 2: 192.168.10.64/27Network 3:
192.168.10.96/28Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30
D. Network 1: 192.168.10.0/27Network 2: 192.168.10.64/28Network 3:
192.168.10.96/29Serial link 1: 192.168.10.112/30Serial link 2: 192.168.10.116/30
Answer: C
Explanation:
Network 1
Required Number of hosts :50
When We use the 26 bits for Network : 11111111.11111111.11111111.11000000 so 62 usable host can be in one network. 50 host for now and remaining hosts address for further growth.
Network 2
Required Number of Hosts: 20
When we use the 27 bits for Network: 11111111.11111111.1111111.11100000 so 30 usable hosts can be in one network.
Network 3
Required Number of Hosts: 10
When we use the 28 bits for Network: 11111111.11111111.11111111.11110000 so 14 usable hosts can be in one network.
Connection between CK1 , CK2 and CK3 is WAN so when you use 30 bits network IP, you will not lose any IP addresses from network since this subnet allows for only 2 host addresses.
QUESTION 54
The Certkiller network is shown below:
A technician is investigating a problem with the network shown above. These symptoms have been observed:
1. All of the user hosts can access the Internet.
2. None of the user hosts can access the server in VLAN9
3. All of the hosts can ping each other.
What could cause the symptoms?
A. Interface S0/0 on the router is down.
B. Interface Fa1/0 on the router is down.
C. Interface Fa0/5 on Certkiller 3 is down.
D. Interface Fa0/4 on Certkiller 3 is down.
E. Certkiller 2 is turned off.
F. Trunking is not enabled on the link between Certkiller 1 and Certkiller 3.
Answer: D
Explanation:
Since all user hosts have access to internet, link to router has to be up. Therefore, router interface (Fa0/1 - believe it is labeled incorrectly on diagram as Fa1/0) must be up. Since all hosts can ping each other, but none can get to VLAN 9 which is through single interface Fa0/4, this interface must be down.
Choice A: incorrect, S0/0 must be up if internet access available.
Choice B: incorrect, Fa0/1 must be up if internet access (through router) available. Choice C: incorrect, would not prevent access to VLAN9 via other routes (i.e Fa0/7, Fa0/9, Fa0/4)
Choice D: correct
Choice E: incorrect: Certkiller 2 must be up if internet access (through switch and then router) available
Choice F: incorrect: Disabled trunking on link between Certkiller 1 and Certkiller 3 would not prevent access to VLAN9 via other routes
QUESTION 55
Refer to the graphic shown below:
What symbol represents a type of device that is connected to interface FastEthernet 0/23 of the 2960 switch Sw1-2960?
A. Picture A
B. Picture B
C. Picture C
D. Picture D
Answer: D
Explanation:
Some of the common Cisco symbols are shown below:
Note: Choice B in this question represents an ATM switch, which is not pictured above. From the output shown in this question, we can see that there a numerous different MAC addresses associated with port Fa 0/23. This can only mean that a device with multiple hosts attached to it is plugged into this port, such as a hub or another switch.
QUESTION 56
Part of the Certkiller network topology is shown below:
Entry exhibit:
Host Certkiller A pings Host Certkiller B, which entry will be in the ARP cache of Host Certkiller A to support this transmission?
A. A
B. B
C. C
D. D
E. E
Answer: C
QUESTION 57
The Certkiller network is shown in the following exhibit:
Certkiller uses EIGRP as the routing protocol. Based on the info shown above, what path will packets take from a host on the 192.168.10.192/26 network to a host on the LAN attached to router Certkiller 1?
A. The path of the packets will be Certkiller 3 to Certkiller 2 to Certkiller 1
B. The path of the packets will be Certkiller 3 to Certkiller 1 to Certkiller 2
C. The path of the packets will be both Certkiller 3 to Certkiller 2 to Certkiller 1 AND Certkiller 3 to Certkiller 1
D. The path of the packets will be Certkiller 3 to Certkiller 1
E. None of the above
Answer: D
Explanation:
Based on the routing table of Certkiller 3, the best path to the Certkiller 1 LAN is shown on the first routing entry (192.168.10.64). Certkiller 3 will use the Serial 0/0 interface to route traffic to this destination, with the next hop IP address of 192.168.10.9, which is the network used between Certkiller 3 and Certkiller 1, making choice D correct. Note that there is only one routing entry for this destination. If traffic were load balancing over both paths, then both would be displayed in the routing table.
QUESTION 58
Refer to the following exhibit:
Based on the diagram shown above, what is the correct addressing for a frame and packet received by Host Certkiller B from Host Certkiller A?
A. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e8f.088a
Destination IP: 192.168.60.5
Source IP: 192.168.60.1
B. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e8f.088a
Destination IP: 192.168.60.5
Source IP: 192.168.24.5
C. Destination MAC: 0011.43da.2c98
Source MAC: 00b0.d0ef.5f6a
Destination IP: 192.168.60.5
Source IP: 192.168.24.5
D. Destination MAC: 0011.43da.2c98
Source MAC: 0070.0e97.af4e
Destination IP: 192.168.60.5
Source IP: 192.168.60.2
E. None of the above
Answer: B
Explanation:
When packets leave from the host, the packets contains the source MAC and IP of the host address. The source and destination IP address will not change. Because the host knows that the destination is on another subnet, it will forward the packet to the default gateway device, so the destination MAC address will be of the default gateway, which is the FA0/0 interface of router Certkiller 3.
QUESTION 59
Exhibit #1:
Please study the two exhibits carefully.
The partial frame shown above displays select header information as it arrives at the destination host. Of the following choices shown below, which one represents the correct header information in the responding frame returned to the remote host?
A. A
B. B
C. C
D. D
E. E
Answer: A
QUESTION 60 The Certkiller network is shown below:
Based on the diagram above, which destination addresses will Host A use to send data to Host B? (Choose two.)
A. The IP address of Certkiller 1
B. The IP address of Certkiller A Fa0/0
C. The IP address of Host B
D. The MAC address of Certkiller 1
E. The MAC address of Certkiller A Fa0/0
F. The MAC address of Host B
Answer: C, E
Explanation:
When sending data from one host to another, destination information will be added to every packet's header. The destination information will be the IP and MAC Address of destination host. If the destination is found outside the subnet the MAC address of the router is used. Note: The destination IP address will never change, unless NAT is
involved.
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