Free 4A0-100 Exam Dumps Preview

ATM and Frame-Relay are point-to-point protocols and do not support different customers or traffic type on the same physical wire.

ATM and Frame-Relay are circuit switched protocols and use VLAN's to create logical separation of traffic.

ATM and Frame-Relay are circuit switched protocols and use IP Header information to create logical separation of traffic.

The Service ATM Point is used for ATM connections to a PE.

The Service Access Point is defined on the P device and is the customers access to the service.

The Service Access Point is defined on the CE device and is the customers access to the service.

To provide an address that refers to all devices in a network.

To provide an address that refers to a group of devices with the same IP address in different Layer 2 networks.

To provide an address that refers to a single device in a network.

STM-1 with a bit rate of 1.544 Mbit/s.

STM-1 with a bit rate of 2.048 Mbit/s.

STM-1 with a bit rate of 51.84 Mbit/s.

An IP filter is used to discard packets with checksum errors.

Multiple ingress and egress filter policies can be applied to a network interface.

Once an IP filter is applied, it cannot be modified.

UDP has less overhead because it is only used for transmission of small amounts of data.

UDP has less overhead then TCP because there is no checksum field in UDP.

UDP overhead is the same as TCP because it uses the same fields in the header.

Each customer's traffic is isolated from other customers.

Service providers utilize a shared infrastructure to support multiple VPNs.

A VPN is created specifically to meet the requirements of each customer.

Tier 1 and Tier 2 ISPs

Tier 2 and Tier 3 ISPs

Tier 3 ISP

All hosts on all networks must have unique host numbers.

Clients are assigned 32-bit addresses and servers 64-bit addresses.

Router, switch and host addresses are drawn from unique address classes.

FALSE

Listening hosts will request retransmission.

Host A or B will retry the transmission.

A back-off timer is started by Host A or B.

Based on the metrics of the routing protocol, find the best path to the destination network and install it in the routing table.

Provide a CLI interface to allow the operator to configure the dynamic routing protocol on the router.

Provide a CLI interface to allow the network operator to install static routes in the routing table.

A passive device simply used to connect two or more cables. Does not generate or amplify any signals.

A device that receives and retransmits a signal out its other ports, but does not do any Layer 2 analysis of the data.

A device that receives a signal and based on the Layer 3 destination address, makes a decision on which ports the signal should be retransmitted.

The Media Dependent Adapter (MDA)

The Input/ Output Module (IOM)

The eXpandable Media Adapter (XMA)

4 subnets, 64 hosts

64 subnets, 4 hosts

64 subnets, 2 hosts

6 subnets, 30 hosts

Virtual Private LAN Service.

Virtual Private Routed Networks.

Virtual Private Dark Fiber Service.

A VPLS operates as if 2 sites are directly connected by a single cable.

A VPLS operates as if multiple sites are connected through a single router.

A VPLS operates as if multiple sites are connected through a series of private point-to-point routed connections.

IES

4 subnets, 510 hosts

2 subnets, 2048 hosts

4 subnets, 512 hosts

R7 silently discards the LSA received from R8.

R7 installs the LSA received from R8 in its link state database and floods a copy to its neighbors.

R7 installs the LSA received from R8 in its link state database, sends an ACK to R8 and floods a copy to its neighbors.

Classful IP addressing provides hierarchy based on variable subnet masks.

Classless IP addresses provide hierarchy based on fixed subnet masks of /24. /16 and/8.

IP addresses provide hierarchy based on the country code and regional identifier.

Labels are globally significant to the MPLS network which means all labels on the LSP path must be unique.

Labels used for an LSP must be statically assigned by the service provider.

Header checksum.

Fragmentation offset.

Identification.

To select from routes with different next-hops.

To select from routes with different costs.

To select from routes with different prefixes.

Router R1

Router R3

Router R4

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Router R1 pushes labels for both LSP A and LSP B.

Router R4 pushes labels for both LSP A and LSP B.

Router R4 pushes labels for LSP A, while router R1 pushes labels for LSP B.

It is used as a L3 broadcast address.

It can have any prefix value.

It is used for layer-2 forwarding.

Nothing. The two hosts can send data to each other at any time.

The two hosts must negotiate a path MTU to be used for the data exchange.

The two hosts must exchange encryption keys before transmitting data.

To limit the number of the IP addresses in the network.

To improve the efficiency of transmissions over the network.

To reduce the number of resources required to send a large frame over the network.

Host A has received a request to establish a TCP session.

Host A has received a request to close a TCP session

The TCP session has been terminated due to a timeout.

Same host numbers.

Same IP address.

First two bits of the IP address are set to 01.

True

False

Devices on different VLANs cannot communicate with each other.

Devices on different VLANs can communicate with each other if they are connected to the same switch.

Devices on different VLANs can communicate with each other if the switches are connected using a
single high-bandwidth port.

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Handling collisions.

Allowing flooding of multicast traffic.

Application data is transported in 53-byte cells.

ATM circuits are identified by a VPI/VCI value.

Provides enhanced QoS support with 5 classes of service.

Ideal for multiple services on the same physical line.

None of the above

Ethernet 802.3 can only be used on point-to-point links, while Ethernet II can be used on broadcast networks.

In Ethernet 802.3, the 2 bytes after the source MAC address is used as a type indicator. In Ethernet II these two bytes indicate the length of the frame.

Ethernet II and Ethernet 802.3 are two different names for the same protocol

RTM selects the best route using the metric as criteria

RTM sends its best route to all its directly connected neighbors.

Internet devices on the same network can have the same Layer 3 address in different broadcast domains.

Internet devices need unique Layer 3 addresses to communicate directly with upper layers.

A router must have only one address to allow it to be uniquely identified.

The TCP session is terminated.

The sender sends the next segment.

An ICMP destination unreachable message is sent.

Subnetting helps routers make faster forwarding decisions.

Subnetting increases routing advertisement stability.

Subnetting reduces the number of route entries advertised by the router.

ICMP echo request, ARP request, ARP reply, ICMP echo reply.

ICMP echo request, ICMP echo reply, ARP request, ARP reply.

ICMP echo request, ARP reply, ARP request, ICMP echo reply.

The SAP is defined on the CE device.

The SAP is defined on the P device.

The SAP is defined on both CE and PE devices.

Port statistics

Log-id 100 files

TCP (protocol 6) traffic from source address 1.2.3.0/24 to destination address 2.3.4.0/24 is forwarded.

TCP (protocol 6) traffic from source address 2.3.4.0/24 to destination address 1.2.3.0/24 is dropped.

TCP (protocol 6) traffic from source address 1.2.3.0/24 to destination address 2.3.4.0/24 is dropped.

You cannot have overlapping IP addresses. Customers must change their IP address assignment.

A VPRN ignores IP addressing information and uses MAC addressing instead, which are always unique.

A VPRN translates customer IP addresses to a private addressing scheme administered by the service provider.

Details of the configuration settings of each router on the network.

A list of other DHCP clients.

Server time information

1

2

4

Increasing the number of addresses in the routing table.

Summarizing addresses in the network into smaller routing tables.

Not advertising directly connected routes.

Intel Corporation.

Digital Equipment Corporation.

Apple Computer.

IBM.

A group of networks that make up the Internet.

A group of networks from different organizations exchanging routes using IGP routing protocols.

Any organization that has a connection to the Internet.