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Online 4A0-100 free questions and answers of New Version:
NEW QUESTION 1
What is the sequence of messages sent by a host when it attempts to ping a destination for which it has no Address Resolution Protocol (ARP) cache entry?
- A. ICMP echo request, ARP request, ARP reply, ICMP echo repl
- B. ARP request, ARP reply, ICMP echo request, ICMP echo repl
- C. ICMP echo request, ICMP echo reply, ARP request, ARP repl
- D. ICMP echo request, ARP reply, ARP request, ICMP echo repl
NEW QUESTION 2
What metric does a link state protocol use to choose the best path to a destination network?
- A. Link bandwidt
- B. Round trip tim
- C. Hop coun
- D. Route preferenc
NEW QUESTION 3
Which answer reflects the correct message sequence used when a source attempts to ping a destination for which it has no Address Resolution Protocol (ARP) cache entry?
- A. ICMP echo request, ARP request, ARP reply, ICMP echo reply
- B. ARP request, ARP reply, ICMP echo request, ICMP echo reply
- C. ICMP echo request, ICMP echo reply, ARP request, ARP reply
- D. ICMP echo reques
- E. ARP reply, ARP request, ICMP echo reply
NEW QUESTION 4
The 18.104.22.168/24 network is subnetted using a /26 mask. How many subnets and host addresses will be obtained with this mask?
- A. 4 subnets, 64 hosts
- B. 64 subnets, 4 hosts
- C. 4 subnets, 62 hosts
- D. 64 subnets, 2 hosts
- E. 6 subnets, 30 hosts
NEW QUESTION 5
Which of the following type of addressing scheme delivers information from one source to all devices who are members of a specific group?
- A. Anycas
- B. Multicas
- C. Broadcas
- D. Unicas
NEW QUESTION 6
If a customer requires a point-to-point layer 2 VPN service between two locations which VPN service would be typically suited for this customer?
- A. Virtual Private Wire Service .
- B. Virtual Private LAN Servic
- C. Virtual Private Routed Network
- D. Virtual Private Dark Fiber Servic
NEW QUESTION 7
Which device is responsible for removing the MPLS label before the packet reaches the CE device?
- A. The CE device removes the MPLS labe
- B. The last LSR on the LSP removes the MPLS labe
- C. MPLS labels are not removed until they reach the final destinatio
- D. The egress LER removes the MPLS labe
NEW QUESTION 8
Which of the following statements are TRUE about the Alcatel-Lucent SR 7750? (Choose 2)
- A. It can boot without a compact flash in the CF3 slo
- B. It cannot boot without a compact flash in the CF3 slo
- C. It can operate without a compact flash in the CF3 slot once it has boote
- D. It cannot operate without a compact flash in the CF3 slot once it has boote
NEW QUESTION 9
What operation is performed by an LSR when it receives an MPLS labeled packet?
- A. The LSR refers to its routing table and forwards the packet to the next LSR or LER without altering the MPLS labe
- B. The LSR refers to its MPLS label table, swaps the label and forwards the packet to the next LSR or LE
- C. The LSR refers to its MPLS label table forwards the packet to the next LSR or LER without altering the MPLS labe
- D. The LSR refers to its MPLS label table, pops the label and forwards the packet to the next IP route
NEW QUESTION 10
Which of the parameters in Hello messages exchanged between two OSPF neighbors must be the same to keep the adjacency alive in OSPF? (Choose four.)
- A. Interface MT
- B. Area I
- C. Authentication passwor
- D. Hello interva
- E. Dead interva
- F. Router priorit
NEW QUESTION 11
Which of the following is a File command in the File System context of the Command Line Interface (CLI)?
- A. time-display
- B. help
- C. type
- D. terminal
NEW QUESTION 12
Which of the following statements are TRUE regarding SONET/SDH? (Choose 2)
- A. They are deployed over point-to-point physical topologies to allow sub-50ms convergenc
- B. An ADM (Add Drop Multiplexer) is used to connect various sites to the infrastructur
- C. IP datagrams are encapsulated in a PPP frame for transmission over an SDH network,
- D. IP datagrams are encapsulated in an Ethernet frame for transmission over a SONET networ
NEW QUESTION 13
How many of the front access card slots of the Alcatel-Lucent 7750 SR-12 router are dedicated for redundant common equipment?
- A. 1
- B. 2
- C. 7
- D. 10
NEW QUESTION 14
What must occur before a LAG becomes operational?
- A. There must be multiple ports assigned to the LA
- B. All ports in the LAG must be configured with the same speed and duplex setting
- C. Auto-negotiation must be enabled on all ports in the LA
- D. The duplex setting on all the ports must be forced to hal
- E. Auto-negotiation must be set to limited or disabled on at least one member por
NEW QUESTION 15
Which of the following SAP types can be associated to a VPWS? (Choose 3)
- A. Ethernet
- B. ATM
- C. Token Ring
- D. Frame Relay
NEW QUESTION 16
Which of the following statements BEST describes the purpose of UDP (Select two)?
- A. Provide a connectionless delivery servic
- B. Provide a connection oriented delivery servic
- C. Provide an unreliable transmission servic
- D. Provide a reliable transmission servic
NEW QUESTION 17
A CE device has a physical connection to which device in the service providers MPLS network?
- A. CE always connects to a PE route
- B. CE always connects to a P route
- C. CE always connects to another CE devic
- D. The CE does not connect to the service provider networ
NEW QUESTION 18
Which of the following is a characteristic of a subnet created with a /31 prefix?
- A. There is no broadcast address on the networ
- B. The address can only be used as a loopback addres
- C. This specifies a single host addres
- D. A /31 prefix is not supported on the SR and ESS platfor
NEW QUESTION 19
Which transport protocol and port number is used by BGP to establish and maintain a peering session with other BGP speakers?
- A. TCP port 179.
- B. UDP port 179.
- C. TCP port 22.
- D. UDP port 22.
NEW QUESTION 20
Which of the following is a characteristic of ATM?
- A. Application data is transported in 53-byte cell
- B. ATM circuits are identified by a VPI/VCI valu
- C. Provides enhanced QoS support with 5 classes of servic
- D. Ideal for multiple services on the same physical lin
- E. All of the abov
- F. None of the above
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