Testking ccnp ont 642-845 exam
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Acquiring new certifications are becoming a huge task in the field of I.T. These certifications are not easy to attain as they require professionalism and a complete dedication towards the study. More over these exams are now continuously updating and accepting this challenge is itself a task. This Cisco 642-845 braindumps exam is an important part of Cisco certifications and at ONT – Optimizing Converged Cisco Networks testking 642-845 braindumps we have the resources to prepare you for this. The 5 exam is essential and core part of Cisco certifications and once you clear the exam you will be able to solve the real time problems yourself.
Cisco 642-845 Exam
Exam 642-845: Optimizing Converged Cisco Networks (ONT)
Related Certifications: CCNP
Duration: 90 minutes
Cost: $150, Available at Pearson VUE Testing Centers
Exam Topics Include:
1. Describe Cisco VoIP implementations.
2. Describe QoS considerations and strategies.
3. Describe DiffServ QoS implementations.
4. Implement Cisco Auto QoS.
5. Implement Cisco device hardening using Cisco security features
6. Describe and Implement WLAN security and management.
The Optimizing Converged Cisco Networks exam, 642-845, is a qualifying exam for the Cisco Certified Network Professional CCNP. This is one of four tests that are required in order to become CCNP certified. The ONT 642-845 exam will certify that the successful candidate has important knowledge and skills in optimizing and providing effective QOS techniques for unified networks. The exam topics include implementing a VOIP network, implementing QoS including AutoQoS, wireless security, and basic wireless management.
The TestKing 642-845 exam products are designed to maximize your learning productivity and focus only on the important aspects that will help you to pass your exam, the first time. We will provide you with exam questions and verified answers, with detailed explanations, that reflect the actual exam. These questions and answers provide you with the experience of taking the actual test. Our exam guides are not just questions and answers. Our questions have detailed explanations provided by our certified industry experts, ensuring that you fully understand the questions and the concept behind the questions.
1. Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature
(QoS pre-classify) provides packet classification and applies appropriate QoS service on tunnel interfaces?
(Choose three.)
A. IP precedence bits
B. DSCP bits
C. original port numbers
D. DE bits
E. source IP address
F. destination IP address
Answer: CEF
2. Which two QoS statements are true about the use of the SDM QoS wizard? (Choose two.)
A. Business-critical traffic includes VoIP and voice signaling packets.
B. SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.
C. SDM can provide QoS for real-time traffic and business-critical traffic.
D. SDM creates a custom-queuing (CQ) or a priority-queuing (PQ) policy.
E. SDM creates a low latency queuing (LLQ) service policy with its associated classes.
F. When allocating bandwidth, values can be entered in either bandwidth percentage or kilobytes per second
(kBps).
Answer: CE
3. Which two statements about Cisco AutoQoS are true? (Choose two.)
A. A QoS service policy must already be enabled on the interface before Cisco AutoQoS can be enabled.
B. Any interface at or below 1.54 Mbps is classified as a low-speed interface.
C. AutoQoS uses Cisco network-based application recognition (NBAR) to identify various applications and
traffic types.
D. Cisco Express Forwarding (CEF) must be enabled at the interface or ATM PVC.
E. Cisco NBAR is a prerequisite for CEF.
F. On a serial interface, before AutoQoS is enabled, the clock rate command must be used to specify a bandwidth
other than the default 1.54 Mbps.
Answer: CD
4. When a router converts analog signals to digital signals as part of the VoIP process, it performs four steps.
Which set of steps contains the steps in their correct sequence?
A. encoding
optional compression
quantization
sampling
B. encoding
quantization
optional compression
sampling
C. optional compression
encoding
sampling
quantization
D. optional compression
sampling
encoding
quantization
E. sampling
quantization
encoding
optional compression
F. sampling
quantization
optional compression
encoding
Answer: E
5. What are three valid Extensible Authentication Protocol (EAP) types? (Choose three.)
A. LEAP
B. EAP-FAST
C. EAP-TLS
D. EAP-AES
E. WEAP
F. WEP
Answer: ABC
6. What are three benefits of the Wireless LAN Solution Engine (WLSE)? (Choose three.)
A. The decentralized nature of WLSE helps reduce the time and resources that are required to manage a large
number of WLAN devices.
B. WLSE helps simplify large-scale deployments by providing automatic configuration of new APs.
C. WLSE minimizes security vulnerabilities by providing security policy misconfiguration alerts and rogue AP
detection.
D. WLSE provides AP utilization and client association reports, features which help with capacity planning.
E. WLSE can respond to required changes that are requested by APs.
F. WLSE increases productivity through customization with three possible levels of management: lightweight,
extended, and advanced.
Answer: BCD
7. What is link fragmentation and interleaving (LFI)?
A. LFI is a QoS mechanism that allots bandwidth and enables the differentiation of traffic according to a policy.
B. LFI is a Layer 2 technique in which header information is sent only at the beginning of the session, stored in a
dictionary, and then referenced in later packets by a short dictionary index.
C. LFI is a Layer 3 technique in which header information is sent only at the beginning of the session, stored in a
dictionary, and then referenced in later packets by a short dictionary index.
D. LFI is a Layer 2 technique in which large frames are broken into small, equal-sized fragments, and
transmitted over the link in an interleaved fashion.
E. LFI is a Layer 2 technique in which smaller fragments are combined into large, equal-sized frames, and
transmitted over the link in an interleaved fashion.
Answer: D
8. Which two statements about packet marking at the data link layer are true? (Choose two.)
A. Through the use of DE markings, Frame Relay QoS supports up to 10 classes of service.
B. Frames maintain their class of service (CoS) markings when transiting a non-802.1p link.
C. IEEE 802.1p supports up to 10 class of service (CoS) markings.
D. In an 802.1q frame, the 3-bit 802.1p priority field is used to identify the class of service (CoS) priority.
E. The 802.1p CoS markings are preserved through the LAN, but are not maintained end to end.
Answer: DE
9. Which two Cisco AutoQoS interface statements are true? (Choose two.)
A. AutoQoS is supported on Frame Relay multipoint subinterfaces.
B. AutoQoS is supported on low-speed ATM PVCs in point-to-point subinterfaces.
C. AutoQoS is supported on serial PPP and HDLC interfaces.
D. AutoQoS is supported only on Frame Relay main interfaces and not on any subinterface configuration.
Answer: BC
10. Which two wireless security statements are true? (Choose two.)
A. A TACACS+ server is required to implement 802.1x.
B. MIC protects against man-in-the-middle and replay attacks.
C. The 802.1x standard provides encryption services for wireless clients.
D. The AES (symmetric block cipher) is specified in the IEEE 802.11i specification.
E. The IEEE 802.11i specification uses RC4 as its encryption mechanism.
F. WPA requires TKIP and AES as encryption methods.
Answer: BD
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