200-301 practice questions 851–860

1. Question 851 · 1334 in bank

   Which QoS tool is used to optimize voice traffic on a network that is primarily intended for data traffic?

   • AWRED
   • BFIFO
   • CWFQ
   • DPQ

   Show answer

   Answer: D

   Explanation

   "Many popular QoS techniques that serve data traffic very well, such as WFQ and RED, are ineffective for voice applications." "FIFO (first-in, first-out). FIFO entails no concept of priority or classes of traffic. With FIFO, transmission of packets out the interface occurs in the order the packets arrive" thus D https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/qos_solutions/QoSVoIP/QoSVoIP.html https://www.cisco.com/c/en/us/td/docs/ios/qos/configuration/guide/12_2sr/qos_12_2sr_book/congstion_mgmt_oview.html enjoy

   Source: Adapted from community discussion — gaber

   References

   • Cisco documentation
   • Cisco documentation
   • Cisco documentation

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2. Question 852 · 1334 in bank

   An engineer is installing a new wireless printer with a static IP address on the Wi-Fi network. Which feature must be enabled and configured to prevent connection issues with the printer?

   • Aclient exclusion
   • BDHCP address assignment
   • Cpassive client
   • Dstatic IP tunneling

   Show answer

   Answer: C

   Explanation

   Passive clients are wireless devices, such as scales and printers that are configured with a static IP address. These clients do not transmit any IP information such as IP address, subnet mask, and gateway information when they associate with an access point. As a result, when passive clients are used, the controller never knows the IP address unless they use the DHCP. https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/m_configuring_passive_clients.html

   Source: Adapted from community discussion — raydel92

   References

   • Cisco documentation
   • Cisco documentation
   • Cisco documentation
   • Cisco documentation

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3. Question 853 · 1334 in bank

   When a client and server are not on the same physical network, which device is used to forward requests and replies between client and server for DHCP?

   • ADHCPOFFER
   • BDHCP relay agent
   • CDHCP server
   • DDHCPDISCOVER

   Show answer

   Answer: B

   Explanation

   B is correct. A DHCP relay agent is any host that forwards DHCP packets between clients and servers. Relay agents are used to forward requests and replies between clients and servers when they are not on the same physical subnet. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/15-sy/dhcp-15-sy-book/dhcp-relay-agent.html#GUID-9E110360-34EA-40BB-9314-2AFABD7F2FDA

   Source: Adapted from community discussion — Stonetales987

   References

   • Cisco documentation

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4. Question 854 · 1334 in bank

   

   Refer to the exhibit. The ntp server 192.168.0.3 command has been configured on router 1 to make it an NTP client of router 2. Which command must be configured on router 2 so that it operates in server-only mode and relies only on its internal clock?

   • ARouter2(config)#ntp server 172.17.0.1
   • BRouter2(config)#ntp server 192.168.0.2
   • CRouter2(config)#ntp passive
   • DRouter2(config)#ntp master 4

   Show answer

   Answer: D

   Explanation

   ■ ntp master {stratum-level}: NTP server mode—the device acts only as an NTP server, and not as an NTP client. The device gets its time information from the internal clock on the device. ■ ntp server {address | hostname}: NTP client/server mode—the device acts as both client and server. First, it acts as an NTP client, to synchronize time with a server. Once syn- chronized, the device can then act as an NTP server, to supply time to other NTP clients.

   Source: Adapted from community discussion — dave1992

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5. Question 855 · 1334 in bank

   Which protocol requires authentication to transfer a backup configuration file from a router to a remote server?

   • AFTP
   • BSMTP
   • CTFTP
   • DDTP

   Show answer

   Answer: A

   Explanation

   Some free advice from someone who has been taking these exams for 15 years. They always give wrong answer options that they expect people to select due to overlooking one word in the question. Read the questions more than once.

   Source: Adapted from community discussion — ProgSnob

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6. Question 856 · 1334 in bank

   Which condition must be met before an NMS handles an SNMP trap from an agent?

   • AThe NMS must receive the same trap from two different SNMP agents to verify that it is reliable.
   • BThe NMS must receive a trap and an inform message from the SNMP agent within a configured interval.
   • CThe NMS software must be loaded with the MIB associated with the trap.
   • DThe NMS must be configured on the same router as the SNMP agent.

   Show answer

   Answer: C

   Explanation

   Before an Network Management System (NMS) can handle an SNMP (Simple Network Management Protocol) trap from an agent, the NMS must have the appropriate Management Information Base (MIB) loaded. MIBs define the structure and attributes of the managed objects that an SNMP agent can send in traps. The NMS needs to understand the MIB associated with the trap to interpret and process the information received in the trap message. Therefore, having the correct MIB loaded is a prerequisite for handling SNMP traps effectively.

   Source: Adapted from community discussion — ricky1802

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7. Question 857 · 1334 in bank

   Select 2

   What are two benefits that the UDP protocol provide for application traffic? (Choose two.)

   • AUDP traffic has lower overhead than TCP traffic
   • BUDP provides a built-in recovery mechanism to retransmit lost packets
   • CThe CTL field in the UDP packet header enables a three-way handshake to establish the connection
   • DUDP maintains the connection state to provide more stable connections than TCP
   • EThe application can use checksums to verify the integrity of application data

   Show answer

   Answer: AE

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8. Question 858 · 1334 in bank

   An engineer is configuring switch SW1 to act as an NTP server when all upstream NTP server connectivity fails. Which configuration must be used?

   • ASW1# config t SW1(config)#ntp peer 192.168.1.1 SW1(config)#ntp access-group peer accesslist1
   • BSW1# config t SW1(config)#ntp master SW1(config)#ntp server192.168.1.1
   • CSW1# config t SW1(config)#ntp backup SW1(config)#ntp server192.168.1.1
   • DSW1# config t SW1(config)#ntp server192.168.1.1 SW1(config)#ntp access-group peer accesslist1

   Show answer

   Answer: B

   Explanation

   Correct me if I'm wrong but I think it's B because: The "NTP Master" command sets this device (SW1) as an NTP server, the second command "NTP server 192.168.1.1" synchronises this device to 192.168.1.1's time. if the upstream connectivity to 192.168.1.1 is lost, this device will continue to act as a NTP server for the rest of the hosts in the network.

   Source: Adapted from community discussion — MDK94

   References

   • Cisco documentation
   • Cisco documentation
   • Cisco documentation
   • Cisco documentation

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9. Question 859 · 1334 in bank

   A network administrator must enable DHCP services between two sites. What must be configured for the router to pass DHCPDISCOVER messages on to the server?

   • ADHCP Binding
   • Ba DHCP Relay Agent
   • CDHCP Snooping
   • Da DHCP Pool

   Show answer

   Answer: B

   Explanation

   Copied from GP: At first glance it does appear this way, however, this is only because we are assuming that a helper address (DHCP relay agent) isn’t already configured. Since the question doesn’t explicitly state anything about any “default” configurations then we can’t assume that a DHCP relay agent hasn’t already been configured. The question just says what MUST be configured (out of the options that are provided in the answers). With that being said, if a DHCP relay agent has already been configured then the only thing you ABSOLUTELY need at this point is the DHCP pool. This is because, if the DHCP server has a scope or pool configured for a particular network, then the server will respond; otherwise, it will NOT respond. So, without a DHCP pool it wouldn’t matter if you had the DHCP relay agent configured because the DHCP server would never respond. Thus, you MUST have the pool configured in order for DHCP to work correctly. DHCP pool is the better answer.

   Source: Adapted from community discussion — dfvanloon

   References

   • Cisco documentation

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10. Question 860 · 1334 in bank

    Which level of severity must be set to get informational syslogs?

    • Aalert
    • Bcritical
    • Cnotice
    • Ddebug

    Show answer

    Answer: D

    Explanation

    Syslog uses the User Datagram Protocol (UDP), port 514 SEVERITY LEVEL ** SEVERITY IN EVENT = Default SMS setting for Syslog Security option. This setting will send all events to remote Syslog system 1 ALERT 2 CRITICAL 3 ERROR 4 WARNING 5 NOTICE 6 INFORMATIONAL (7 Debug [lower] will include ALL Informational messages) 7 DEBUG

    Source: Adapted from community discussion — Vinarino

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200-301 practice, question 851. 1334 questions available.