Routing and Switching MCQs with Answers
Practice important Routing and Switching MCQs with answers and explanations.
Chapter: 133
Q1541:
Fill in the blank: The timeout for dynamic translations can be configured, with the default being _______ hours.
A. 24
B. 12
C. 48
D. 72
Correct Answer:
A
Chapter: 133
Q1542:
What is the purpose of the ACL in Dynamic NAT configuration?
A. To identify which addresses are to be translated
B. To define the pool of addresses
C. To configure the NAT interfaces
D. To set the timeout period
Correct Answer:
A
Chapter: 133
Q1543:
Fill in the blank: To bind the ACL to the pool in Dynamic NAT, use the command _______.
A. ip nat inside source list acl-# pool pool-name
B. ip nat pool pool-name start-ip end-ip
C. ip nat inside source static inside-local inside-global
D. ip nat outside source dynamic local-global
Correct Answer:
A
Chapter: 133
Q1544:
Which command is used to configure the inside NAT interface in Dynamic NAT?
A. ip nat inside
B. ip nat outside
C. ip nat pool pool-name start-ip end-ip
D. ip nat inside source list acl-# pool pool-name
Correct Answer:
A
Chapter: 133
Q1545:
Fill in the blank: Dynamic NAT translations are _______ and will eventually time out.
A. Temporary
B. Permanent
C. Fixed
D. Unreliable
Correct Answer:
A
Chapter: 133
Q1546:
What could happen if the entire pool of addresses is in use due to slow timeouts?
A. The addresses become unavailable for new hosts
B. The NAT configuration will fail
C. The network will become unstable
D. The addresses will be reallocated immediately
Correct Answer:
A
Chapter: 133
Q1547:
Fill in the blank: To configure the pool for Dynamic NAT, use the command ip nat pool followed by the pool-name, start-ip, end-ip, and either _______.
A. netmask or prefix length
B. subnet mask or gateway
C. NAT type or address type
D. address type or netmask
Correct Answer:
A
Chapter: 134
Q1548:
What does PAT allow for many inside local addresses?
A. One inside global address
B. One inside local address
C. Multiple inside global addresses
D. Random address mapping
Correct Answer:
A
Chapter: 134
Q1549:
Fill in the blank: PAT allows many privately addressed nodes to access the Internet using a _______ global address.
A. Single
B. Multiple
C. Random
D. Reserved
Correct Answer:
A
Chapter: 134
Q1550:
How many local addresses can realistically be mapped to a single global address with PAT?
A. About 4000
B. About 65,000
C. About 1000
D. About 10,000
Correct Answer:
A
Chapter: 134
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
Correct Answer:
A
Chapter: 134
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
Correct Answer:
A
Chapter: 134
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
Correct Answer:
B
Chapter: 134
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
Correct Answer:
A
Chapter: 134
Q1555:
What is a realistic number of local addresses per global address in PAT?
A. 4000
B. 65000
C. 1000
D. 10000
Correct Answer:
A
Chapter: 134
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
Correct Answer:
A
Chapter: 134
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
Correct Answer:
A
Chapter: 134
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A