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Routing and Switching MCQs with Answers

Practice important Routing and Switching MCQs with answers and explanations.

Multiple Choice Questions

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Q1551: What does the NAT router use to keep track of different conversations in PAT?
  • A: TCP and UDP port numbers
  • B: IP addresses
  • C: MAC addresses
  • D: VLAN IDs
View Answer
A

Q1552: Fill in the blank: The extended table entry in PAT maps _______ and _______ port numbers.
  • A: TCP and UDP
  • B: IP and MAC
  • C: VLAN and TCP
  • D: UDP and MAC
View Answer
A

Q1553: Which command is used to configure PAT using a pool of addresses?
  • A: ip nat pool
  • B: ip nat inside source list acl-# pool
  • C: ip nat inside source static
  • D: ip nat outside source dynamic
View Answer
B

Q1554: Fill in the blank: Over _______ inside addresses can theoretically map to a single outside address with PAT.
  • A: 65000
  • B: 4000
  • C: 10000
  • D: 1000
View Answer
A

Q1555: What is a realistic number of local addresses per global address in PAT?
  • A: 4000
  • B: 65000
  • C: 1000
  • D: 10000
View Answer
A

Q1556: What is the function of NAT overload in PAT?
  • A: To use one global address for many local addresses
  • B: To use multiple global addresses for one local address
  • C: To map each local address to a unique global address
  • D: To avoid using addresses altogether
View Answer
A

Q1557: Fill in the blank: In PAT, the NAT router maintains an _______ table entry to track different conversations.
  • A: Extended
  • B: Simple
  • C: Static
  • D: Dynamic
View Answer
A

Q1558: What is the main advantage of using PAT?
  • A: Allows many local addresses to share a single global address
  • B: Provides more global addresses
  • C: Ensures each local address has a unique global address
  • D: Simplifies network configuration
View Answer
A

Q1559: What does port forwarding help with?
  • A: Forwarding traffic from one network node to another
  • B: Encrypting network traffic
  • C: Changing IP addresses dynamically
  • D: Increasing network speed
View Answer
A

Q1560: Fill in the blank: Port forwarding can be enabled for applications by specifying the _______ local address.
  • A: Inside
  • B: Outside
  • C: Public
  • D: Static
View Answer
A

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