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Q61. - (Topic 4) 

What does the "Inside Global" address represent in the configuration of NAT? 

A. the summarized address for all of the internal subnetted addresses 

B. the MAC address of the router used by inside hosts to connect to the Internet 

C. a globally unique, private IP address assigned to a host on the inside network 

D. a registered address that represents an inside host to an outside network 

Answer:

Explanation: 

NAT: Local and Global Definitions http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094837. shtml Cisco defines these terms as: Inside local address—The IP address assigned to a host on the inside network. This is the address configured as a parameter of the computer OS or received via dynamic address allocation protocols such as DHCP. The address is likely not a legitimate IP address assigned by the Network Information Center (NIC) or service provider. Inside global address—A legitimate IP address assigned by the NIC or service provider that represents one or more inside local IP addresses to the outside world. Outside local address—The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from an address space routable on the inside. Outside global address—The IP address assigned to a host on the outside network by the host owner. The address is allocated from a globally routable address or network space. These definitions still leave a lot to be interpreted. For this example, this document redefines these terms by first defining local address and global address. Keep in mind that the terms inside and outside are NAT definitions. Interfaces on a NAT router are defined as inside or outside with the NAT configuration commands, ip nat inside destination and ip nat outside source . Networks to which these interfaces connect can then be thought of as inside networks or outside networks, respectively. Local address—A local address is any address that appears on the inside portion of the network. Global address—A global address is any address that appears on the outside portion of the network. 


Q62. - (Topic 5) 

A company has placed a networked PC in a lobby so guests can have access to the corporate directory. 

A security concern is that someone will disconnect the directory PC and re-connect their laptop computer and have access to the corporate network. For the port servicing the lobby, which three configuration steps should be performed on the switch to prevent this? (Choose three.) 

A. Enable port security. 

B. Create the port as a trunk port. 

C. Create the port as an access port. 

D. Create the port as a protected port. 

E. Set the port security aging time to 0. 

F. Statically assign the MAC address to the address table. 

G. Configure the switch to discover new MAC addresses after a set time of inactivity. 

Answer: A,C,F 

Explanation: 

If port security is enabled and the port is only designated as access port, and finally static MAC address is assigned, it ensures that even if a physical connection is done by taking out the directory PC and inserting personal laptop or device, the connection cannot be made to the corporate network, hence ensuring safety. 


Q63. - (Topic 7) 

Which route source code represents the routing protocol with a default administrative distance of 90 in the routing table? 

A. S 

B. E 

C. D 

D. R 

E. O 

Answer:

Explanation: 

SStatic EEGP DEIGRP RRIP OOSPF 

Default Administrative distance of EIGRP protocol is 90 then answer is C 

Default Distance Value TableThis table lists the administrative distance default values of the protocols that Cisco supports: 

Route Source Default Distance Values 

Connected interface 0 Static route 1 Enhanced Interior Gateway Routing Protocol (EIGRP) summary route 5 External Border Gateway Protocol (BGP) 20 Internal EIGRP 90 IGRP 100 OSPF 110 Intermediate System-to-Intermediate System (IS-IS) 115 Routing Information Protocol (RIP) 120 Exterior Gateway Protocol (EGP) 140 On Demand Routing (ODR) 160 External EIGRP 170 Internal BGP 200 Unknown* 255 


Q64. - (Topic 5) 

Refer to the exhibit. 

After the power-on-self test (POST), the system LED of a Cisco 2950 switch turns amber. What is the status of the switch? 

A. The POST was successful. 

B. The switch has a problem with the internal power supply and needs an external power supply to be attached. 

C. POST failed and there is a problem that prevents the operating system from being loaded. 

D. The switch has experienced an internal problem but data can still be forwarded at a slower rate. 

E. The switch passed POST, but all the switch ports are busy. 

Answer:

Explanation: 

http://www.cisco.com/en/US/products/hw/switches/ps607/products_tech_note09186a00801 25913.shtml 

Each time you power up the switch, eight Power-On Self Tests (POSTs) run automatically. POSTs check the most important system components before the switch begins to forward packets. When the switch begins the POST, the port status LEDs display amber for two seconds, and then display green. As each test runs, the port status LEDs go out. 1x is the first to go out. The port status LEDs for ports 2x through 8x go out sequentially as the system completes a test. When the POST completes successfully, the port status LEDs go out. This indicates that the switch is operational. If a test fails, the port status LED associated with the test displays amber. The system LED also displays amber. Not E: From Cisco IOS Software Release 11.2(8.5) SA6 onwards, the port and system LEDs both remain amber after a POST failure. In the earlier Cisco IOS Software Releases, only the LEDs of failed linked ports remained amber. 


Q65. - (Topic 3) 

Which one of the following IP addresses is the last valid host in the subnet using mask 255.255.255.224? 

A. 192.168.2.63 

B. 192.168.2.62 

C. 192.168.2.61 

D. 192.168.2.60 

E. 192.168.2.32 

Answer:

Explanation: 

With the 224 there are 8 networks with increments of 32 One of these is 32 33 62 63 where 63 is broadcast so 62 is last valid host out of given choices. 


Renewal 100-105 download:

Q66. - (Topic 3) 

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 lowest host address in the subnet is 10.16.2.1 255.255.254.0. 

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 network is not subnetted. 

Answer: B,D 

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 


Q67. - (Topic 3) 

Which statement is true? 

A. An IPv6 address is 64 bits long and is represented as hexadecimal characters. 

B. An IPv6 address is 32 bits long and is represented as decimal digits. 

C. An IPv6 address is 128 bits long and is represented as decimal digits. 

D. An IPv6 address is 128 bits long and is represented as hexadecimal characters. 

Answer:

Explanation: 

http://www.cisco.com/en/US/technologies/tk648/tk872/technologies_white_paper0900aecd 8026003d.pdf 

One of the key advantages IPv6 brings is the exponentially larger address space. The following will outline the basic address architecture of IPv6. 128-bit-long addresses Represented in hexadecimal format: Uses CIDR principles: prefix/prefix length x:x:x:x:x:x:x:x, where x is a 16-bit hex field The last 64 bits are used for the interface ID 


Q68. - (Topic 1) 

Refer to the topology and switching table shown in the graphic. 

Host B sends a frame to Host C. What will the switch do with the frame? 

A. Drop the frame 

B. Send the frame out all ports except port 0/2 

C. Return the frame to Host B 

D. Send an ARP request for Host C 

E. Send an ICMP Host Unreachable message to Host B 

F. Record the destination MAC address in the switching table and send the frame directly to Host C 

Answer:


Q69. - (Topic 5) 

Refer to the exhibit. 

An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator has entered the command shown in the exhibit. Based on the output shown, what could be the problem? 

A. The serial interface is configured for half duplex. 

B. The serial interface does not have a cable attached. 

C. The serial interface has the wrong type of cable attached. 

D. The serial interface is configured for the wrong frame size. 

E. The serial interface has a full buffer. 

Answer:

Explanation: 

http://www.thebryantadvantage.com/CCNACertificationExamTutorialDirectlyConnectedSeri 

alInterfaces.htm 

Since the output is not forthcoming it shows that the type of cable attached is wrong, 

though the cable is connected since it shows the cable type. 

According to the figure DTE cable should connect to R1 on interface but while examining 

using show controllers serial 0/0 command it showing that a DCE is connected so the 

wrong type of cable is being used. 


Q70. - (Topic 5) 

Refer to the exhibit. 

The DHCP settings have recently been changed on the DHCP server and the client is no longer able to reach network resources. What should be done to correct this situation? 

A. Verify that the DNS server address is correct in the DHCP pool. 

B. Ping the default gateway to populate the ARP cache. 

C. Use the tracert command on the DHCP client to first determine where the problem is located. 

D. Clear all DHCP leases on the router to prevent address conflicts. 

E. Issue the ipconfig command with the /release and /renew options in a command window. 

Answer:

Explanation: 

A PC will retain its DHCP assigned IP address until the lease time expires, which often times is 24 hours or more. When changes are made to the DHCP server, the client should issue the ipconfig/release and then ipconfig/renew commands to obtain a new IP address lease.