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NEW QUESTION # 26
An administrator has connected devices to a switch and, for security reasons, wants the dynamically learned MAC addresses from the address table added to the running configuration. What must be done to accomplish this?
- A. Use the no switchport port-security command to allow MAC addresses to be added to the configuration.
- B. Set the switchport mode to trunk and save the running configuration.
- C. Enable port security and use the keyword sticky.
- D. Use the switchport protected command to have the MAC addresses added to the configuration.
Answer: C
Explanation:
One can configure MAC addresses to be sticky. These can be dynamically learned or manually configured, stored in the address table, and added to the running configuration. If these addresses are saved in the configuration file, the interface does not need to dynamically relearn them when the switch restarts, hence enabling security as desired.
NEW QUESTION # 27
An administrator has connected devices to a switch and, for security reasons, wants the dynamically learned MAC addresses from the address table added to the running configuration.
What must be done to accomplish this?
- A. Use the no switchport port-security command to allow MAC addresses to be added to the configuration.
- B. Set the switchport mode to trunk and save the running configuration.
- C. Enable port security and use the keyword sticky.
- D. Use the switchport protected command to have the MAC addresses added to the configuration.
Answer: C
Explanation:
Explanation/Reference: http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide /port_sec.pdf
One can configure MAC addresses to be sticky. These can be dynamically learned or manually configured, stored in the address table, and added to the running configuration. If these addresses are saved in the configuration file, the interface does not need to dynamically relearn them when the switch restarts, hence enabling security as desired.
NEW QUESTION # 28
Refer to the exhibit.
If host A sends an IP packet to host B, what will the source physical address be in the frame when it reaches host B?
- A. B2:B2:B2:B2:B2:B2
- B. C3:C3:C3:C3:C3:C3
- C. A1:A1:A1:A1:A1:A1
- D. 10.168.11.88
- E. 10.168.10.99
- F. D4:D4:D4:D4:D4:D4
Answer: B
Explanation:
When packets transfer from one host to another across a routed segment, the source IP address always remains the same source IP address, and the source physical (MAC) address will be the existing router's interface address. Similarly, the destination IP address always remains the same and the destination physical (MAC) address is the destination router's interface address.
NEW QUESTION # 29
Which commands are required to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0? (Choose two.)
- A. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0
- B. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0
- C. Router(config)# router ospf 1
- D. Router(config)# router ospf area 0
- E. Router(config)# router ospf 0
- F. Router(config-router)# network 192.168.16.0 0.0.0.255 0
Answer: A,C
Explanation:
In the router ospf command, the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF, we need a wildcard in the "network" statement, not a subnet mask. We also need to assgin an area to this process -> .
NEW QUESTION # 30
Refer to the exhibit.
The network administrator is testing connectivity from the branch router to the newly installed application server. What is the most likely reason for the first ping having a success rate of only 60 percent?
- A. The branch router LAN interface should be upgraded to FastEthernet.
- B. The network is likely to be congested, with the result that packets are being intermittently dropped.
- C. A routing table lookup delayed forwarding on the first two ping packets.
- D. The branch router had to resolve the application server MAC address.
- E. There is a short delay while NAT translates the server IP address.
Answer: D
Explanation:
Initially the MAC address had to be resolved, but later on it was confirmed to ping went straight away
NEW QUESTION # 31
The ip helper-address command does what?
- A. resolves an IP address overlapping issue
- B. relays a DHCP request across networks
- C. resolves an IP address from a DNS server
- D. assigns an IP address to a host
Answer: B
Explanation:
Explanation/Reference: http://cisconet.com/tcpip/dhcp/107-how-to-use-ip-helper-address-to-connect-remote-dhcpserver.html
When the DHCP client sends the DHCP request packet, it doesn't have an IP address. So it uses the all-zeroes address, 0.0.0.0, as the IP source address. And it doesn't know how to reach the DHCP server, so it uses a general broadcast address, 255.255.255.255, for the destination. So the router must replace the source address with its own IP address, for the interface that received the request. And it replaces the destination address with the address specified in the ip helper-address command. The client device's MAC address is included in the payload of the original DHCP request packet, so the router doesn't need to do anything to ensure that the server receives this information.
NEW QUESTION # 32
How does the ad auction determine which ad to show to the intended audience?
- A. Based on predicted engagement rate
- B. By comparing the historic performances of advertisers
- C. By maximizing value for both people and businesses
- D. Based on the highest bidding price
Answer: C
NEW QUESTION # 33 
Select two options which are security Issues which need to be modified before RouterA is used? (Choose two.)
- A. inappropriate wording in banner message
- B. unencrypted weak password is configured to protect privilege mode
- C. the virtual terminal lines have a weak password configured
- D. virtual terminal lines have a password, but it will not be used
- E. configuration supports un-secure web server access
Answer: A,D
Explanation:
Explanation/Reference:
This answer can be done by simulation only, don't know user name password and banner message etc
NEW QUESTION # 34
Which statement describes the process ID that is used to run OSPF on a router?
- A. It is locally significant and must be the same throughout an area.
- B. It is locally significant and is used to identify an instance of the OSPF database.
- C. It is globally significant and is used to identify OSPF stub areas.
- D. It is globally significant and is used to represent the AS number.
Answer: B
NEW QUESTION # 35
Which two statements describe the IP address 10.16.3.65/23? (Choose two.)
- A. The subnet address is 10.16.3.0 255.255.254.0.
- B. The network is not subnetted.
- C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0
- D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.
- E. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
Answer: D,E
Explanation:
The mask 255.255.254.0 (/23) used with a Class A address means that there are 15 subnet bits and 9 host bits. The block size in the third octet is 2 (256 - 254). So this makes the subnets in 0, 2, 4, 6, etc., all the way to 254. The host 10.16.3.65 is in the 2.0 subnet. The next subnet is 4.0, so the broadcast address for the 2.0 subnet is 3.255. The valid host addresses are
2.1 through 3.254
NEW QUESTION # 36
Which router command will configure an interface with the IP address 10.10.80.1/19?
- A. router(config-if)# ip address 10.10.80.1 255.255.240.0
- B. router(config-if)# ip address 10.10.80.1 255.255.224.0
- C. router(config-if)# ip address 10.10.80.1 255.255.0.0
- D. router(config-if)# ip address 10.10.80.1 255.255.255.240
- E. router(config-if)# ip address 10.10.80.1/19
- F. router(config-if)# ip address 10.10.80.1 255.255.255.0
Answer: B
Explanation:
Explanation/Reference:
255.255.224 equal /19 in CIDR format hence the answer
NEW QUESTION # 37
A business recently delivered an ad campaign with the Brand Awareness objective on the Facebook App Which metric within Ads Manager will help the business determine the success of the campaign?
- A. Reach
- B. Cost per click
- C. Estimated Ad Recall Lift Rate
- D. Amount spent
Answer: A
NEW QUESTION # 38
Refer to the exhibit.
The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three.)
- A. Ensure cable A is plugged into a trunk port.
- B. Reseat all cables.
- C. Ensure the switch has power.
- D. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
- E. Ensure that cables A and B are straight-through cables.
- F. Reboot all of the devices.
Answer: B,C,E
NEW QUESTION # 39
Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the exhibit, but there is no data connectivity between them. The Atlanta router is known to have a correct configuration.
Given the partial configurations shown in the exhibit, what is the problem on the Brevard router that is causing the lack of connectivity?
- A. The subnet mask is incorrect.
- B. The IP address is incorrect.
- C. The maximum transmission unit (MTU) size is too large.
- D. The serial line encapsulations are incompatible.
- E. The bandwidth setting is incompatible with the connected interface.
- F. A loopback is not set.
Answer: B
Explanation:
Topic 8, OSPF Questions
NEW QUESTION # 40
Refer to the exhibit.
The enterprise has decided to use the network address 172.16.0.0. The network administrator needs to design a classful addressing scheme to accommodate the three subnets, with 30, 40,
and 50 hosts, as shown. What subnet mask would accommodate this network?
- A. 255.255.255.252
- B. 255.255.255.248
- C. 255.255.255.224
- D. 255.255.255.240
- E. 255.255.255.192
Answer: E
Explanation:
Subnet mask A i.e. 255.255.255.192 with CIDR of /26 which means 64 hosts per subnet which are sufficient to accommodate even the largest subnet of 50 hosts.
NEW QUESTION # 41
CORRECT TEXT
Which two of the following are true regarding the configuration of RouterA? (Choose two.)
- A. only telnet protocol connections to RouterA are supported
- B. since DHCP is not used on FaO/1 there is not a need to use the NAT protocol
- C. remote connections to RouterA using telnet will succeed
- D. at least 5 simultaneous remote connections are possible
- E. console line connections will nevertime out due to inactivity
Answer: C,D
Explanation:
The IP address can accommodate 5 hosts at least, telnet can be accessed on the router
NEW QUESTION # 42
Which IP address is a private address?
- A. 192.169.42.34
- B. 12.0.0.1
- C. 172.20.14.36
- D. 172.33.194.30
- E. 168.172.19.39
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION # 43
Which layer of the TCP/IP stack combines the OSI model physical and data link layers?
- A. Internet layer
- B. application layer
- C. transport layer
- D. network access layer
Answer: D
Explanation:
The Internet Protocol Suite, TCP/IP, is a suite of protocols used for communication over the internet. The TCP/IP model was created after the OSI 7 layer model for two major reasons. First, the foundation of the Internet was built using the TCP/IP suite and through the spread of the World Wide Web and Internet, TCP/IP has been preferred. Second, a project researched by the Department of Defense (DOD) consisted of creating the TCP/IP protocols. The DOD's goal was to bring international standards which could not be met by the OSI model. Since the DOD was the largest software consumer and they preferred the TCP/IP suite, most vendors used this model rather then the OSI. Below is a side by side comparison of the TCP/IP and OSI models.
TCP/IP Model VS. OSI Model Application Layer 7 Application Layer 6 Presentation Layer 5 Session Transport Layer 4 Transport Internet Layer 3 Network Network Access Layer 2 Data Link Layer 1 Physical
NEW QUESTION # 44
Which role can edit payment methods within an ad account?
- A. Advertiser
- B. Admin
- C. Analyst
- D. Editor
Answer: B
NEW QUESTION # 45
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