Chapter 11: Check Your Understanding

1. 1Refer to the following output:
   NAT1# show ip nat translations
   Pro Inside global Inside local Outside local Outside global
   udp 198.133.24.211:123 192.168.254.7:123 192.31.7.4:123 192.31.7.4:123
   tcp 198.133.24.211:4509 192.168.254.66:4509 192.135.250.184:80 192.135.250.184:80
   tcp 198.133.24.211:4643 192.168.254.66:4643 192.135.250.71:5190 192.135.250.71:5190
   
   Based on the output, which statement is true about the NAT configuration?

   1. AStatic NAT is configured
   2. BDynamic NAT is configured
   3. CNAT Overload (PAT) is configured
   4. DNAT is configured incorrectly
2. 2What is the default timeout value for NAT translations?

   1. AOne hour
   2. BOne day
   3. COne week
   4. DIndefinite
3. 3Match the characteristic to the NAT technique. Note that a technique can have more than one characteristic.
   
   ___ Dynamic NAT
   ___ PAT
   ___ Static NAT

   1. AProvides one-to-one fixed mappings of local and global addresses
      
      ___ Static NAT
   2. BAssigns the translated address of IP hosts from a pool of public addresses
      
      ___ Dynamic NAT
   3. CCan map multiple addresses to a single address of an external interface
      
      ___ PAT
   4. DAssigns unique source port numbers of an inside global address on a session-by-session basis
      
      ___ PAT
   5. EAllows an external host to establish sessions with an internal host
      
      ___ Static NAT
4. 4Consider the following configuration"
   R2(config)# ip nat inside source static 192.168.0.100 209.165.200.2
   R2(config)# interface serial 0/0/0
   R2(config-if)# ip address 10.1.1.2 255.255.255.252
   R2(config-if)# ip nat inside
   R2(config-if)# exit
   R2(config)# interface serial 0/1/0
   R2(config-if)# ip address 209.165.200.225 255.255.255.254
   R2(config-if)# ip nat outside
   R2(config-if)# exit
   
   Which host(s) will be translated by NAT?

   1. A10.1.1.2
   2. B192.168.0.100
   3. C209.165.200.2
   4. DAll hosts on the 10.1.1.0 network
   5. EAll hosts on the 192.168.0.0 network
5. 5Consider the following configuration:
   
   R2(config)# ip nat pool nat-pool1 209.165.200.225 209.165.200.240 netmask 255.255.255.0
   R2(config)# ip nat inside source list 1 pool nat-pool1
   R2(config)# interface serial0/0/0
   R2(config-if)# ip address 10.1.1.2 255.255.255.252
   R2(config-if)# ip nat inside
   R2(config-if)# exit
   R2(config)# interface serial0/1/0
   R2(config-if)# ip address 209.165.200.1 255.255.255.224
   R2(config-if)# ip nat outside
   R2(config-if)# exit
   R2(config)# access-list 1 permit 192.168.0.0 0.0.0.31
   
   Which addresses will be translated by NAT?

   1. A10.1.1.2 to 10.1.1.255
   2. B192.168.0.0 to 192.168.0.255
   3. C192.168.0.0 to 192.168.0.31
   4. D209.165.200.240 to 209.165.200.255
   5. EOnly host 10.1.1.2
   6. FOnly host 209.165.200.255
6. 6Consider the following topology.
   On which interface(s) would NAT be applied?

   1. AOnly S0/1/0
   2. BOnly Gi0/0
   3. COnly on S0/1/0 and Gi0/0
   4. DOnly on Gi0/0 and Gi0/1
   5. EOnly on S0/1/0, Gi0/0, and Gi0/1
   6. FOn all interfaces
7. 7Which NAT solution allows external users to access an internal SFTP server on a network that uses private IP addresses?

   1. ADynamic NAT
   2. BPAT
   3. CStatic NAT
   4. DNAT overload
8. 8What are two disadvantages of NAT? (Choose two)

   1. AUses too many legally registered addresses
   2. BDecreases the number of connections that can be used to the public network
   3. CNetwork device performance
   4. DEnd-to-end traceability is lost
   5. EIncreased network cost
   6. FIncreased provider cost
9. 9What is the last step in configuring PAT with an address pool?

   1. ACreating the access list
   2. BDefining the address pool
   3. CBinding the access list to the address pool
   4. DApplying NAT to at least two interfaces
10. 10What parameter defines what internal addresses are translated by NAT?

    1. AThe access list
    2. BThe address pool
    3. CThe interface(s) that have the command ip nat inside applied
    4. DThe interface(s) that have the command ip nat outside applied

11. 11What is the effect of adding the keyword overload to a NAT configuration?

    1. AMore interfaces can participate in NAT
    2. BMore internal addresses can be translated into one or more public addresses
    3. CThe router is placed into stealth mode verifying that the address translation is not overtaxing the router hardware
    4. DPublic IP addresses can be added to the NAT pool dynamically
12. 12What is the most commonly deployed IPv6 NAT method recommended for all IPv6-based companies?

    1. ANAT for IPv6
    2. BIPv6 tunneling
    3. CPAT for IPv6
    4. DNone of these

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College Cisco Networking (ITCC1404: Chapter Quizzes) Quiz sobre Chapter 11: Check Your Understanding, criado por Antje C. em 12-05-2015.

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Antje C.

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