102 Exam Questions for WCNA Updated Versions With Test Engine
Pass WCNA Exam with Updated WCNA Exam Dumps PDF 2023
NEW QUESTION # 21
Which protocol acts as the routable network layer protocol used to get packets from end-to-end on a TCP/IP network?
- A. IP
- B. TCP
- C. IGMP
- D. RIP
Answer: A
NEW QUESTION # 22
The UDP header checksum isoptional.
- A. False
- B. True
Answer: B
NEW QUESTION # 23
How do you determine which Profile is in use while you are capturing traffic?
- A. Open the Preferences | Interface information.
- B. Right-click on the Packet Summary pane.
- C. Examine the Wireshark Title Bar.
- D. Lookin the Status Bar Profile column.
Answer: D
NEW QUESTION # 24
The gratuitous ARP process is not required if a host is configured with a static IP address.
- A. False
- B. True
Answer: A
NEW QUESTION # 25
You can identify compromised hosts that are communicating with Command and Control (C&C) servers by capturing traffic close to the network egress point and filtering on the IP addresses of the suspect C&C servers.
- A. False
- B. True
Answer: B
NEW QUESTION # 26
A host has just booted up. This host is allowed to send ARP queries for the MAC address of thelocal DNS server before sending gratuitous ARPs to test for duplicate IP addresses on the network.
- A. False
- B. True
Answer: B
NEW QUESTION # 27
Which statement about TCP sequence and acknowledgment numbering is correct?
- A. Both sides of a TCP connection must agree on an Initial Sequence Number value.
- B. The Acknowledgment Number field indicates the next sequence number expected from the other side of the connection.
- C. Starting Sequence Numbers cannot be larger than 65,535 because this is a 2-byte field.
- D. The sequence number always increments by 1 for each data packettransmitted.
Answer: B
NEW QUESTION # 28
Network congestion is defined as a condition that can cause packet loss or slow data transfer because the network itself cannot support the data transfer rate.
- A. False
- B. True
Answer: B
NEW QUESTION # 29
Time reference packets are permanently given a timestamp of 00:00:00. When you close and reopen the trace filethe time reference information is retained.
- A. False
- B. True
Answer: A
NEW QUESTION # 30
To increase the number of recently created display filters that Wireshark remembers, increase theFilter display max,list entriesvalue in Wireshark's Preferences window.
- A. False
- B. True
Answer: B
NEW QUESTION # 31
Whichstatement about ICMP is true?
- A. ICMP packets do not contain a UDP or TCP header.
- B. Port filtering can block ICMP traffic.
- C. ICMP packets cannot cross a router.
- D. All ICMP packets are the same length.
Answer: A
NEW QUESTION # 32
TCP data is sequenced and acknowledged to ensure delivery.
- A. False
- B. True
Answer: B
NEW QUESTION # 33
You will only see the TCP Urgent Pointer field if the URG bit is set to 1 in a TCP packet.
- A. False
- B. True
Answer: B
NEW QUESTION # 34
Which traffic characteristic is often seen when analyzing database applications that transfer individual records across the network?
- A. multicast responses
- B. separate connections for each record
- C. large delays between transmissions
- D. small packet sizes
Answer: D
NEW QUESTION # 35
The TCP Time-Sequence graph can depict packet loss.
- A. False
- B. True
Answer: B
NEW QUESTION # 36
When you disable the UDP protocol decoding process, applications that use UDP (such as DHCP and DNS) will not bedecoded.
- A. False
- B. True
Answer: B
NEW QUESTION # 37
You are performing a TCP scan on a target while capturing your traffic with Wireshark. Which statement about the analysis is correct?
- A. If only UDP responses are received, the target does not support TCP.
- B. If you receive TCP Push responses, the target port is blocked.
- C. If you receive ICMP responses, the target port is likely firewalled.
- D. If a TCP RST response is received, the target is not currently powered up.
Answer: C
NEW QUESTION # 38
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