Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 91:

  Which two packet types does an RTP session consist of? (Choose two.)

  A. TCP
  B. RTCP
  C. RTP
  D. ICMP
  E. BOOTP
  F. ARP
  B. RTCP
  C. RTP

  ---

  An RTP session is established for each multimedia stream. A session consists of an IP address with a pair of ports for RTP and RTCP. For example, audio and video streams use separate RTP sessions, enabling a receiver to deselect a particular stream. The ports which form a session are negotiated using other protocols such as RTSP (using SDP in the setup method) and SIP. According to the specification, an RTP port should be even and the RTCP port is the next higher odd port number.

  Reference: http://en.wikipedia.org/wiki/Real-time_Transport_Protocol

• Question 92:

  What is the default IS-IS interface metric on a Cisco router?

  C

• Question 93:

  2/mpls_vpn/user/guide/mpls52book/ipv6.html

  

  Refer to the exhibit.

  Which statement describes what the authoritative flag indicates?

  A. Authentication was used for the mapping.
  B. R1 learned about the NHRP mapping from a registration request.
  C. Duplicate mapping in the NHRP cache is prevented.
  D. The registration request had the same flag set.
  B. R1 learned about the NHRP mapping from a registration request.

  ---

  Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp

  10.0.0.2 255.255.255.255, tunnel 100 created 0:00:43 expire 1:59:16 TypE. dynamic Flags: authoritative NBMA address: 10.1111.1111.1111.1111.1111.1111.1111.1111.1111.11 10.0.0.1 255.255.255.255, Tunnel0 created 0:10:03 expire

  1:49:56 TypE. static Flags:

  authoritative

  The fields in the sample display are as follows:

  Flags:

  ?

  authoritative--Indicates that the NHRP information was obtained from the Next Hop Server or router that maintains the NBMA-to-IP address mapping for a particular destination.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html

• Question 94:

  What are two requirements for BFD static route support? (Choose two)

  A. CEF must be configured on all routers that will carry traffic.
  B. BFD must be configured on all Ethernet, virtual-template, and dialer interfaces that will carry traffic.
  C. All routers that will carry traffic must have the same software version.
  D. All routers that will carry traffic must be the same model.
  E. Parameters must be configured on all routers that will carry traffic.
  F. Parameters must be configured on all interfaces that will carry traffic.
  A. CEF must be configured on all routers that will carry traffic.
  F. Parameters must be configured on all interfaces that will carry traffic.

• Question 95:

  Refer to the exhibit.

  

  Why is R2 unable to ping the loopback interface of R4?

  A. The local preference is too high.
  B. The weight is too low.
  C. The next hop is not reachable from R2.
  D. The route originated from within the same AS.
  C. The next hop is not reachable from R2.

  ---

  Before a BGP speaker installs a route to a network in the main IP routing table, the router must know how to reach the next hop that is used to get to that network. Route reachability is verified by searching for a route to the next hop in the main IP routing table. Unlike IGP routing protocols, such as EIGRP and OSPF, which assume that a route is reachable if they learned it through a valid adjacency, BGP does not install routes that it cannot verify as reachable. If a route to the next hop for a BGP network is found in the main IP routing table, BGP assumes that the network is reachable, and that the particular BGP route might be stored in the main IP routing table. If the router receives a route to a network that is not reachable, that route continues to be stored in the incoming BGP table, adj-RIB-In, and might be seen using the show ip bgp command, but is not placed in the main IP routing table.

  Reference: https://www.informit.com/library/content.aspx?b=CCIE_Practical_Studies_IIandseqNum=75

• Question 96:

  In a typical three-node OpenStack deployment, which two components are part of the controller node? (Choose two )

  A. Neutron Layer 3 agent
  B. Neutron DHCP agent
  C. Identity service
  D. Neutron Layer 2 agent
  E. Neutron server plugin
  C. Identity service
  E. Neutron server plugin

• Question 97:

  You are installing a new device to replace a device that failed. The configuration of the failed device is stored on a networked server, and the new device has an RXBOOT image installed. Under which condition does the streamlined Setup mode fail?

  A. The last four bits of the configuration register are not equal to the decimal value 0 or 1.
  B. The startup configuration file was deleted.
  C. Bit 6 is set in the configuration register.
  D. The startup configuration is corrupt.
  A. The last four bits of the configuration register are not equal to the decimal value 0 or 1.

  ---

  The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The boot field determines if the router boots manually, from ROM, or from Flash or the network. To change the boot field value and leave all other bits set

  to their default values, follow these guidelines:

  If you set the configuration register boot field value to 0x0, you must boot the operating

  system manually with the boot command.

  ?

  default ROM software.

  ?

  If you set the configuration register boot field to any value from 0x2 to 0xF, the router uses the boot field value to form a default boot filename for booting from a network server. For more information about the configuration register bit settings

  and default filenames, refer to the appropriate router hardware installation guide.

  Reference:

  http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ffun_r/frf010.

  html

• Question 98:

  DRAG DROP

  Drag and drop the BGP attribute on the left to the correct category on the right.

  Select and Place:

  

  

• Question 99:

  Which two statements best describe the difference between active mode monitoring and passive mode monitoring? (Choose two.)

  A. Passive mode monitoring uses IP SLA to generate probes for the purpose of obtaining information regarding the characteristics of the WAN links.
  B. Active mode monitoring is the act of Cisco PfR gathering information on user packets assembled into flows by NetfFow.
  C. Active mode monitoring uses IP SLA probes for obtaining performance characteristics of the current exit WAN link.
  D. Passive mode monitoring uses NetFlow for obtaining performance characteristics of the exit WAN links.
  C. Active mode monitoring uses IP SLA probes for obtaining performance characteristics of the current exit WAN link.
  D. Passive mode monitoring uses NetFlow for obtaining performance characteristics of the exit WAN links.

  ---

  Passive and Active Monitoring

  Passive monitoring is the act of OER gathering information on user packets assembled into flows by NetFlow. OER, when enabled, automatically enables NetFlow on the managed interfaces on the border routers. By aggregating this

  information on the border routers and periodically reporting the collected data to the master controller, the network prefixes and applications in use can automatically be learned. Additionally, attributes like throughput, reachability, loading,

  packet loss, and latency can be deduced from the collected flows. Active monitoring is the act of generating IP SLA probes to generate test traffic for the purpose of obtaining information regarding the characteristics of the WAN links. Active

  probes can either be implicitly generated by OER when passive monitoring has identified destination hosts, or explicitly configured by the network manager in the OER configuration.

  Reference:

  http://products.mcisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/Transport_div ersity/Transport_Diversity_PfR.html#wp199209

• Question 100:

  Refer to the exhibit.

  

  Which statement is true?

  A. R4 is a DIS
  B. R4 is the DIS for level 1 and level 2
  C. R5 is a DIS
  D. R4 does not run level1 IS-IS
  A. R4 is a DIS