Cisco 400-007 Online Practice Questions and Exam Preparation

Cisco 400-007 Online Questions & Answers

• Question 81:

  Two routers R1 and R2 are directly connected through an Ethernet link. Both routers are running OSPF over the Ethernet link and OSPF has been registered with BFD. R1 has been set up to transmit BFD at a 50 ms interval, but R2 can receive only at a 100 ms rate due to platform limitations. What does this mean?

  A. After the initial timer exchange. R2 sets its transmission rate to the R1 Desired Min TX interval
  B. After the initial timer exchange. R1 sets its transmission rate to the R2 Required Min RX interval
  C. Timers renegotiate indefinitely, so the timer exchange phase never converges
  D. R2 sets the P-bit on all BFD control packets until R2 sends a packet with the F-bit set
  B. After the initial timer exchange. R1 sets its transmission rate to the R2 Required Min RX interval

• Question 82:

  Company XYZ has a hub-and-spoke topology over an SP-managed infrastructure. To measure traffic performance metrics, they implemented IP SLA senders on all spoke CE routers and an IP SLA responder on the hub CE router. What must they monitor to have visibility on the potential performance impact due to the constantly increasing number of spoke sites?

  A. CPU and memory usage on the spoke routers
  B. memory usage on the hub router
  C. CPU usage on the hub router
  D. interface buffers on the hub and spoke routers
  C. CPU usage on the hub router

• Question 83:

  A network hacker is trying to interrupt the transport packet on IPSEC. A packet with duplicate sequence numbers is introduced. The customer sends high-priority traffic during this window. Which design parameter should be considered to mitigate this issue?

  A. Classify and Mark duplicate sequence packets.
  B. Apply anti-replay window 4096.
  C. Restrict keywork in IPSEC Tunnel.
  D. Increase QoS shape policy.
  B. Apply anti-replay window 4096.

• Question 84:

  Network designers often segment networks by creating modules for various reasons. Sometimes, however, a network can be unintentionally segmented. For instance, if the only way to connect a remote site to a headquarters or regional site is to connect them both to the public Internet, the corporate network is now unintentionally segmented.

  Which of the following options can be used to desegment the network in this situation?

  A. Build virtual networks that pass over the network
  B. Mark traffic for special handling through quality of service
  C. Configure little to no control data plane policy
  D. Block specific sources from reaching specific destinations
  A. Build virtual networks that pass over the network

• Question 85:

  A product manufacturing organization is integrating cloud services into their IT solution The IT team is working on the preparation phase of the implementation approach, which includes the Define Strategy step. This step defines the scope of IT, the application, and the service.

  What is one topic that should be considered in the Define Strategy step?

  A. financial and governance models
  B. innovate and align with business according to volume
  C. due diligence and financial scenarios
  D. contingency exit strategy steps
  A. financial and governance models

• Question 86:

  An enterprise service provider is designing the network for a customer who runs a video application in both a centralized and distributed fashion The team has looked at the following parameters

  1.The available bandwidth for branches and the associated cost

  2.Video resource cost

  3.Usage patterns at hub-and-spoke sites.

  4.Call agent bridge selection algorithm

  Which key piece of information is missing and needs to be taken into consideration in order to determine the correct resource allocation model?

  A. video traffic jitter and delay
  B. type of video resources
  C. transport protocol and traffic engineering
  D. network management and monitoring
  A. video traffic jitter and delay

• Question 87:

  Which two technologies enable multilayer segmentation? (Choose two.)

  A. policy-based routing
  B. segment routing
  C. data plane markings
  D. firewalls
  E. filter lists
  C. data plane markings
  D. firewalls

• Question 88:

  Which extensions to GRE tunneling provide session tracking and in-order packet delivery in exchange for additional state stored in tunnel endpoints?

  A. GRE Protocol Type and Checksum extension fields.
  B. GRE Version and Reserved0 extension fields.
  C. No extension fields are available in the GRE header to track session data and packet sequences.
  D. GRE Key and Sequence number extensions.
  D. GRE Key and Sequence number extensions.

• Question 89:

  How must the queue sizes be designed to ensure that an application functions correctly?

  A. Each individual device queuing delay in the chain must be less than or equal to the application required delay.
  B. The queuing delay on every device in the chain must be exactly the same to the application required delay.
  C. The default queue sizes are good for any deployment as it compensates the serialization delay.
  D. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.
  D. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.

• Question 90:

  Company XYZ uses an office model where the employees can use any open desk and plug their laptops in. They want to authenticate the end users using their domain username and password before allowing them access to the network. The design must also accommodate the ability of controlling traffic within the same group or subnet if a macro (or micro) segmentation-based model is adopted in the future. Which protocol can be recommended for this design to authenticate end users?

  A. LDAP
  B. EAP
  C. TACACS+
  D. RADIUS
  D. RADIUS