400-101 CCIE Routing and Switching Written Practice Exam Set 9

Which of the following multicast addresses is used for Auto-RP announcement messages? (Select the best answer.)


Options are :

  • 224.0.1.39 (Correct)
  • 224.0.0.2
  • 224.0.0.13
  • 224.0.0.102

Answer : 224.0.1.39

Which of the following statements is accurate regarding Salt? (Select the best answer.)


Options are :

  • Salt requires installation of a master (Correct)
  • Salt requires installation of a minion client.
  • Salt requires Ruby programming knowledge.
  • Salt requires SSH.

Answer : Salt requires installation of a master

400-101 CCIE Routing and Switching Written Practice Exam Set 3

You administer an OSPF network that contains a mixture of Ethernet, FastEthernet, GigabitEthernet, and TenGigabitEthernet links. The reference bandwidth is set to thedefault value of 100. Which of the following will occur? (Select the best answer.)


Options are :

  • FastEthernet, GigabitEthernet, and TenGigabitEthernet links will have the same OSPF cost. (Correct)
  • GigabitEthernet and TenGigabitEthernet links will have the same OSPF cost.
  • All links will have the same OSPF cost.
  • Ethernet andFastEthernet links will have the same OSPF cost.

Answer : FastEthernet, GigabitEthernet, and TenGigabitEthernet links will have the same OSPF cost.

Which of the following DiffServ classes is most likely to be dropped? (Select the best answer.)


Options are :

  • AF11
  • AF31
  • AF42
  • AF23 (Correct)

Answer : AF23

Which of the following PfR modes use IP SLA probes? (Select the best answer.)


Options are :

  • only fast mode and active mode (Correct)
  • only active mode
  • only passive mode
  • only fast mode

Answer : only fast mode and active mode

400-101 CCIE Routing and Switching Written Practice Exam Set 6

On which of the following interfaces can a port ACL be applied? (Select 3 choices.)


Options are :

  • an SVI
  • a trunk port (Correct)
  • an EtherChannel interface (Correct)
  • a routed port
  • a Layer 2 port (Correct)

Answer : a trunk port an EtherChannel interface a Layer 2 port

What restrictions apply to OSPF virtual link creation? (Select 3 choices.)


Options are :

  • .The router at the far end of the virtual link cannot connect to a stub area.
  • The routers at each end of the virtual link must share a common area (Correct)
  • The transit area cannot be a stub area. (Correct)
  • One router must connect to the backbone area. (Correct)

Answer : The routers at each end of the virtual link must share a common area The transit area cannot be a stub area. One router must connect to the backbone area.

A nonroot switch receives several BPDUs from multiple forwarding switches. Each hello packet has the same root bridge ID and the same STP path cost to the root bridge. Which of the following BPDU criteria is used next to determine the root port? (Select the best answer.)


Options are :

  • the lowest port priority of the forwarding switch
  • the lowest port number of the forwarding switch
  • .the lowest bridge ID of the forwarding switch (Correct)
  • the highest bridge ID of the forwarding switch

Answer : .the lowest bridge ID of the forwarding switch

400-101 CCIE Routing and Switching Written Practice Exam Set 12

Which of the following must match for two routers running OSPFv3 to establish a neighbor adjacency? (Select 2 choices.)


Options are :

  • router IDs
  • process IDs
  • area IDs (Correct)
  • instance IDs (Correct)

Answer : area IDs instance IDs

Which of the following is appended to a VPNv4 BGP route to indicate membership in an RFC 4364 MPLS VPN? (Select the best answer.)


Options are :

  • an LSP
  • an RD
  • a label
  • an RT (Correct)

Answer : an RT

Which of the following statements best describe why WRED is useful for networks where the majority of traffic uses TCP? (Select 2 choices.)


Options are :

  • TCP packets that are dropped must be retransmitted. (Correct)
  • TCP packets cannot arrive out of sequence.
  • TCP sources reduce traffic flow when congestion occurs. (Correct)
  • TCP packets have large header sizes.

Answer : TCP packets that are dropped must be retransmitted. TCP sources reduce traffic flow when congestion occurs.

400-101 CCIE Routing and Switching Written Practice Exam Set 6

Which of the following statements are true regarding the ipv6 ospf authentication command and the ipv6 ospf encryption command? (Select 3 choices.)


Options are :

  • .Both commands must be configured from interface configuration mode. (Correct)
  • .Both commands require ESP.
  • Both commands enable encryption.
  • Both commands require an SPI value. (Correct)
  • Both commands require AH.
  • Both commands enable authentication (Correct)

Answer : .Both commands must be configured from interface configuration mode. Both commands require an SPI value. Both commands enable authentication

How does SNMPv3 use HMAC-SHA or HMAC-MD5? (Select 2 choices.)


Options are :

  • as authentication hashes at the noAuthNoPriv security level
  • as encryption hashes at the noAuthNoPriv security level
  • as authentication hashes at the authNoPriv security level (Correct)
  • as authentication hashes at the authPriv security level (Correct)

Answer : as authentication hashes at the authNoPriv security level as authentication hashes at the authPriv security level

Which of the following TOS values is used for the PHB value EF in the output of the show ip cache flow command? (Select the best answer.)


Options are :

  • B8. (Correct)
  • 0
  • A0
  • E0

Answer : B8.

400-101 CCIE Routing and Switching Written Practice Exam Set 5

Which of the following IPv6 address prefixes are not routable? (Select 2 choices.)


Options are :

  • FF02::/16 (Correct)
  • FC00::/8
  • FE80::/10 (Correct)
  • 2000::/3
  • FD00::/8

Answer : FF02::/16 FE80::/10

Which of the following routes from the show ip route command was learned from a Type 3 or Type 4 LSA? (Select the best answer.)


Options are :

  • O IA 172.17.3.0/24 [110/74] via 10.1.2.3, 00:00:23, FastEthernet1/0 (Correct)
  • O E1 172.17.1.0/24 [110/74] via 10.1.2.3, 00:00:23, FastEthernet1/0
  • O 172.17.2.0/24 [110/74] via 10.1.2.3, 00:00:23, FastEthernet1/0
  • C 172.17.4.0/24 is directly connected, FastEthernet1/1

Answer : O IA 172.17.3.0/24 [110/74] via 10.1.2.3, 00:00:23, FastEthernet1/0

Which of the following error messages might appear when a unidirectional link failure exists between two switches? (Select 2 choices.)


Options are :

  • %STP-2-DISPUTE_DETECTED (Correct)
  • %STP-2-BLOCK_PVID_PEER
  • %STP-2-BLOCK_BPDUGUARD
  • %STP-2-BRIDGE_ASSURANCE_BLOCK (Correct)
  • %STP-2-BLOCK_PVID_LOCAL

Answer : %STP-2-DISPUTE_DETECTED %STP-2-BRIDGE_ASSURANCE_BLOCK

400-101 CCIE Routing and Switching Written Practice Exam Set 2

Which of the following statements is true about the PortFast feature? (Select the best answer.)


Options are :

  • PortFast prevents switching loops from occurring.
  • PortFast permanently places a switch port in the STP forwarding state. (Correct)
  • PortFast can be configured only as a global default.
  • PortFast should not be enabled for ports that are connected to servers.

Answer : PortFast permanently places a switch port in the STP forwarding state.

Which of the following can you configure on a router to gather userlevel network resource utilization statistics? (Select the best answer.)


Options are :

  • NetFlow (Correct)
  • AutoQoS
  • traffic policing
  • CoPP

Answer : NetFlow

Which of the following functions is not performed by LCP? (Select the best answer.)


Options are :

  • establishment of the PPP link
  • termination of the PPP link
  • detection of looped links
  • negotiation of Network layer protocols (Correct)

Answer : negotiation of Network layer protocols

400-101 CCIE Routing and Switching Written Practice Exam Set 7

You have configured an IS-IS node with the NET 49.1741.c867.5309.af89.00. Which of the following is the system ID? (Select the best answer.)


Options are :

  • 49
  • 1741.c867.5309
  • 49.1741
  • c867.5309.af89 (Correct)

Answer : c867.5309.af89

Which of the following statements is true regarding HSRPv2 and HSRPv6? (Select the best answer.)


Options are :

  • Both use the same multicast address.
  • Both use the same virtual MAC address range
  • Both support 4,096 groups (Correct)
  • Both use the same UDP port number.

Answer : Both support 4,096 groups

Which of the following attacks results in unicast traffic being sent out every port on a switch, regardless of the intended destination of the traffic? (Select the best answer.)


Options are :

  • a DHCP spoofing attack
  • a VLAN hopping attack
  • an ARP poisoning attack
  • a MAC flooding attack (Correct)

Answer : a MAC flooding attack

400-101 CCIE Routing and Switching Written Practice Exam Set 2

Which of the following is an optional, nontransitive BGP path attribute? (Select the best answer.)


Options are :

  • origin
  • AS-path
  • originator ID (Correct)
  • aggregator

Answer : originator ID

Which of the following command sets correctly configures and applies a MAC ACL? (Select the best answer.)


Options are :

  • Router(config)#accesslist 700 permit 0000.0c01.abcd Router(config)#interface gigabitethernet 1/0.1 Router(configif)#mac accessgroup 700 out
  • Router(config)#accesslist 800 permit 0000.0c01.abcd Router(config)#interface gigabitethernet 1/0 Router(configif)#mac accessgroup 800 out
  • Router(config)#accesslist 700 deny 0000.0c01.abcd Router(config)#accesslist 700 permit any Router(config)#interface gigabitethernet 1/0.1 Router(configif)#mac accessgroup 700 in (Correct)
  • Router(config)#accesslist 800 permit 0000.0c01.abcd Router(config)#interface gigabitethernet 1/0.1 Router(configif)#mac accessgroup 800 in
  • Router(config)#accesslist 800 permit 0000.0c01.abcd Router(config)#interface gigabitethernet 1/0 Router(configif)#mac accessgroup 800 in

Answer : Router(config)#accesslist 700 deny 0000.0c01.abcd Router(config)#accesslist 700 permit any Router(config)#interface gigabitethernet 1/0.1 Router(configif)#mac accessgroup 700 in

You want to configure SSH for incoming VTY connections. The router has not been configured with a host name, a domain name, or an RSA key pair. Additionally, the VTY lines are not yet configured to accept incoming SSH connections. You issue the ip ssh timeout 60 command from global configuration mode to configure the router with a 60second timeout. Which of the following messages will you most likely receive? (Select the best answer.)


Options are :

  • Please create RSA keys to enable SSH. (Correct)
  • Invalid input detected at '^' marker
  • Please define a domainname first.
  • Please define a hostname other than Router.

Answer : Please create RSA keys to enable SSH.

400-101 CCIE Routing and Switching Written Practice Exam Set 6

You issue the ip sla schedule 20 starttime 9:00:00 command. How long will the IP SLA operation run? (Select the best answer.)


Options are :

  • for 20 minutes
  • for one hour (Correct)
  • until the operation has completed once
  • for nine hours

Answer : for one hour

What AD is assigned to external BGP routes by default? (Select the best answer.)


Options are :

  • 90
  • 20 (Correct)
  • 5
  • 1

Answer : 20

What is the first step in a successful DHCP lease process? (Select the best answer.)


Options are :

  • A DHCP client sends a DHCPDISCOVER broadcast. (Correct)
  • A DHCP server sends a DHCPACK unicast.
  • A DHCP client sends a DHCPDECLINE broadcast
  • A DHCP server sends a DHCPNAK broadcast.

Answer : A DHCP client sends a DHCPDISCOVER broadcast.

400-101 CCIE Routing and Switching Written Practice Exam Set 5

You issue the defaultinformation originate command from RIP router configuration mode on RouterA. Which of the following will occur? (Select the best answer.)


Options are :

  • Only routes that originate on RouterA will be advertised.
  • A default route will be generated into RIP. (Correct)
  • .Default routes will be sent over passive interfaces.
  • Routes will be advertised only when the routing database is updated.

Answer : A default route will be generated into RIP.

400-101 CCIE Routing and Switching Written Practice Exam Set 13

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