PrepAway Cisco CCNP Switch Certification Practice Test Questions Part 10 300-115 Exam

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PrepAway Cisco CCNP Switch Certification Practice Test Questions Part 10 300-115 Exam

While getting a IP address from DHCP server, which DHCP packet uses both Broadcast IP address and Broadcast Mac Address?

  • A. Discover
  • B. Offer
  • C. Request
  • D. Acknowledge
  • E. Keepalive
Answer:  A 


DHCP client uses a DHCP discover message to find out the DHCP Server. This message is a layer 2 broadcast message as well as layer 3 broadcast message. It uses the address or any specific subnet broadcast address. At times, it can happen that the client requests the last assigned IP Address as well. In case the client is in the same network and if the IP address is available then the DHCP server will assign the same IP address. If the server is setup to authoritative then it might accept old ip address request otherwise a fresh request is needed by the client.

Incorrect Answers:

B. Offer: DHCP offer message is a layer 2 unicast. When the DHCP Server receives the discover message from the client containing request for leasing the IP Address, the DHCP server reserves an IP-Address for the client & send a DHCP offer message. It generally contains the clients MAC address (Client ID), the ip address that is being offered to the client by the server, subnet mask, default gateway (if configured), lease duration etc.

C. Request: DHCP request message is also a layer 2 unicast and a layer 3 broadcast. When the client receives the DHCP Offer message from the server, the client replies with the DHCP Request message, broadcast to the server for the offered ip address. On the basis of the server identification option, servers will be updated about which offer the client has accepted.

D. Acknowledge: DHCP Acknowledge is a layer 2 unicast but still a layer 3 broadcast. When the Server received the DHCP Request from the client, the it enters into the final phase. Acknowledgement phase is majorly about sending an acknowledgement message to the client. This message contains the lease information or any configuration related detail that the client might have requested. Once the client receives the IP address, it need to probe the newly received address to check for any IP address conflicts.

E. Keepalive: No such packet exists in DHCP process.

Cisco CCNP Certification Exam 300-115 Practice Tests


About 300-115 Exam

The Cisco 300-115 exam is the second of three tests that an individual should pass in order to obtain the Cisco Certified Network Professional (CCNP) Routing and Switching and Cisco Certified Design Professional (CCDP) credentials.

The Cisco 300-115 SWITCH exam is made up of 30-40 questions. The multiple-choice questions require you to give multiple answers. There are also scenario-based questions, fill-in-the-blank, and drag and drop. The duration of the test is 120 minutes. It is available in English and Japanese. Currently, there is no passing score that has been published by Cisco. The purpose of this certification exam is to test one’s capability to plan, configure, verify, implement, and troubleshoot complicated LAN switching solutions in an enterprise setting. These solutions are for enterprises that operate with the Cisco Enterprise Campus Architecture. In addition, the test covers largely secure WLANs and VLANs integration.

Exam topics:

The topics of the 300-115 exam act as guidelines for the candidates, so that they know what to focus on in their training. Although the content of the test may change and other related topics may be added, these are the general topics you can expect to find in this exam:

  • Infrastructure Services (15%): The individuals should configure and examine such first-hop redundancy protocols as GLBP, HSRP, and VRRP.

  • Infrastructure Security (20%): The candidates have to configure and check switch security features, such as Storm control, Dynamic ARP inspection, Private VLAN, DHCP snooping, IP Source Guard, and Port security. They should also characterize device security with the help of Cisco IOS AAA with RADIUS and TACACS+.

  • Layer 2 Technologies (65%): The students should configure and examine switch administration, Layer 2 protocols (LLDP, UDLD, CDP), VLANs, trunking (dot1Q, VTP pruning, manual pruning), EtherChannels, spanning tree (MST, RPVST+, PVST+, PortFast, BPDUfilter, Rootguard and Loopguard), aggregation and virtualization technologies.

  • The study resources for the 300-115 exam should be Cisco-approved in the sense that they should be official study guides or other Cisco partner learning materials. It is a good idea to visit the Cisco Press website.