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Which of the following is the best description of well known ports?

Which organization eventually became the standards body for IP and related protocols?

To transmit its segments of data across the network TCP uses the services of which layer?

A. Application Layer.

B. Transport Layer.

C. IP Layer.

D. Data Link Layer

Correct Answer: C

Which of the following best describes the operation of the Media Dependent Adapter (MDA)?

A. The MDA contains the flexible fast path complex used for forwarding data.

B. Excess data is discarded by the MDA and the remaining data forwarded for QoS processing.

C. The MDA buffers data and applies Quality of Service (QOS) to classify and treat the data appropriately.

D. The MDA converts data from its incoming physical format into an internal format and provides some minimal buffering.

Correct Answer: D

Question number thirty. Topic one

What is NOT a function of the IOM?

A. It forwards the data to the switch fabric.

B. It discards excess data packets.

C. It converts the incoming data to an internal format.

D. It performs Quality of Service operations and buffers incoming data.

Correct Answer: C

Question number thirty-one. Topic one

Which compact flash on a Control/Switch processor of a Nokia seventy-five fifty router stores the runtime image and running configuration?

A. CF one

B. CF two

C. CF three

D. Both A and B

Correct Answer: C

Question number thirty-two. Topic one

One of the tasks of the boot options file (BOF) is to:

A. Specify authorization information to control access to the router.

B. Define an IP address for the CPM Ethernet port.

C. Initialize the hardware.

D. Set the date/time for the system.

Which of the following user interface sessions are accessible through Telnet and Secure Shell (SSH) on the Nokia seventy-five fifty SR and seventy-four fifty ESS?

A. Graphic User Interface (GUI).

B. Node Management Terminal Interface (NMTI).

C. Command Line Interface (CLI).

An Ethernet Local Area Network (LAN) consists of the components shown in the diagram. How many broadcast and collision domains are on this LAN?

As described by the CSMA/CD algorithm, what is the first thing to happen when Host A and Host B begin transmitting data at the same time?

A. Host A and B will generate a jam signal.

B. Listening hosts will request retransmission.

C. Host A or B will retry the transmission.

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

Correct Answer: A

Question number forty-one

Topic one

An Ethernet Local Area Network (LAN) consists of the following components:

- Four twenty-four-port hubs and Two sixteen-port switches

How many broadcast domains are on this LAN?

Which of the following best describes an Ethernet bridge?

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

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

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

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

Correct Answer: C

Question number forty-three. Topic one

What happens immediately after an Ethernet switch receives an Ethernet frame?

A. It records the destination MAC address and the interface on which it arrived.

B. It records the source MAC address and the interface on which it arrived.

C. It floods the frame out of all its interfaces except the interface on which the frame arrived.

D. It transmits the frame out of the appropriate interface.

Correct Answer: B

Question number forty-four. Topic one

What is the behavior of a typical Ethernet switch when it receives a frame with a uncast destination MAC address? (Choose two)

A. The switch floods the frame out of all ports except the port on which it was received.

B. The switch looks in its FDB. If the source address is unknown it discards the frame.

C. The switch looks in its FDB. If the destination address is known it forwards the frame out the appropriate interface.

D. The switch looks in its FDB. If the destination address is unknown it floods the frame out all ports except the port on which it was received.

E. The switch looks in its FDB. If the destination address is unknown it discards the frame.

Correct Answer: C D

Question number forty-five. Topic one

Which technologies can be used with Ethernet switches to achieve redundancy? (Choose two)

A. LAG

B. OSPF

C. RIP

D. STP

Correct Answer: A D

An Ethernet network with redundant paths not running STP.

B. An ATM network.

D. All of the above.

Question number forty-seven. Topic one

What problems was Spanning Tree Protocol (STP) primarily designed to solve? (Choose two)

A. Providing path redundancy.

B. Preventing loops.

C. Handling collisions.

D. Allowing flooding of multicast traffic.

Correct Answer: A B

Question number forty-eight. Topic one

Which of the following is a feature of a VLAN?

A. A VLAN allows multiple Ethernet switches to be connected in a single broadcast domain.

B. A VLAN allows multiple Ethernet switches to be connected in a single collision domain.

C. A VLAN can separate ports on the same switch into different broadcast domains.

D. A VLAN can separate ports on the same switch into different collision domains.

Correct Answer: C

Question number forty-nine. Topic one

What is required if devices on different VLANs wish to communicate with each other?

A. Devices on different VLANs cannot communicate with each other.

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

C. Devices on different VLANs can communicate with each other as long as the switches they are attached to are connected to each other with an Ethernet connection.

D. Devices on different VLANs can communicate with each other if there is an IP router to connect the VLANs.

Correct Answer: D

A twenty-four port Ethernet switch is configured with VLAN one hundred on ports one through eight, VLAN two hundred on ports nine through sixteen and VLAN three hundred on ports seventeen through twenty-four. Which of the following describes the behavior of the switch when a broadcast frame is received on port one?

A. The switch will discard the broadcast frame because there is no specific destination address.

B. The switch will flood the broadcast frame on all ports on which the switch has seen frames from attached devices

C. The switch will flood the broadcast frame on ports two to eight.

D. The switch will flood the broadcast frame on all twenty-four ports.

Correct Answer: C

Question number fifty-one

The method by which Ethernet frames are associated to a specific VLAN is referred to as:

A. Segmenting

B. Stacking

C. Routing

D. Tagging

Correct Answer: D

Question number fifty-two. Topic one

What information is used to separate VLANs on a VLAN trunk that connects multiple VLANs?

A. VLAN tag.

B. IP Header.

C. FCS.

D. Priority Value.

Question number fifty-three. Topic one

Using Q-in-Q Virtual Local Area Network (VLAN) stacking, how does a carrier differentiate one customers traffic from that of another?

A. The provider edge (PE) switch adds an additional field called a PE tag to the customers Layer two data.

B. The PE switch replaces the customers VLAN tag with a carrier-assigned tag.

C. The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network.

D. The PE switch assigns a customer-specific priority label to the customers traffic.

Correct Answer: C

Topic one

What is the purpose of the Data Link Layer in the OSI model?

A. The Data Link Layer is responsible for encapsulating the packet into a frame for transmission on the transmission media.

B. The Data Link Layer is responsible for encapsulating the packet into an IP header and routing the packet.

C. The Data Link Layer is responsible for formatting the packet for applications such as JPEG format.

D. The Data Link Layer is responsible for timing of the signals on the transmission media

Correct Answer: A

Question number fifty-five. Topic one

Which of the following is typically a characteristic of Layer two framing?

A. Provides a universal addressing scheme to uniquely identify destinations in the network.

B. The size of the Layer two frame cannot exceed one thousand five hundred eighteen bytes.

C. Provides error checking of the frame contents after transmission.

D. All the above.

Correct Answer: C

Question number fifty-six

Topic one

Which of the following is NOT an example of a Layer two protocol?

A. POS

B. IP

C. ATM

D. Frame Relay

E. Ethernet

Correct Answer: B

Question number fifty-seven. Topic one

Why is the address field in a PPP header always set to "one million one hundred eleven thousand six hundred fifty-six"?

A. PPP supports multipoint access networks with many stations. The all one's acts as a broadcast.

B. PPP supports multipoint access networks with many stations. The all one's acts as a multicast.

C. PPP supports point-to-point networks only. The address field is fixed.

D. PPP supports point-to-point networks only. The address field can change dynamically since every station is assigned a PPP address.

Correct Answer: C

What is the basic unit of framing in SDH and the bit rate for its transmission?

A. STM-one with a bit rate of one point five four four megabit per second. B. STM-one with a bit rate of two point zero four eight megabit per second. C. STM-one with a bit rate of fifty-one point eight four megabit per second.

D. STM-one with a bit rate of one hundred fifty-five point five two megabit per second.

Correct Answer: D

Question number sixty-two. Topic one

Which of the following are examples of Time Division Multiplexing (Choose two)?

A. Ethernet.

B. Token-Ring.

C. SONET/SDH.

D. E-one carrier.

Correct Answer: CD

Question number sixty-three

How many DS-three frames can be transported in an OC-three frame?

A. One

B. Two

C. Three

D. Four

Correct Answer: C

Question number sixty-four

Who was responsible for developing and publishing the original standard that was used for ten megabit per second Ethernet?

A. Intel Corporation.

B. Digital Equipment Corporation.

C. DEC-Intel-Xerox.

D. Apple Computer.

E. IBM.

Topic one

Topic one

Which Ethernet frame field does the receiver use to verify the integrity of the received bits?

A. Destination address

B. Frame check sequence

C. Preamble

D. Length field

Which of the following is true of Ethernet half-duplex transmission?

A. Half-duplex transmission is less efficient because the frame MTU is smaller.

B. Half-duplex transmission is only thirty to forty percent efficient because of collisions.

C. Ethernet switches support half-duplex transmission only.

D. All of the above.

Correct Answer: B

Question number seventy. Topic one

What is the meaning of carrier sense in the CSMA/CD algorithm?

A. The host will retransmit the frame if it detects a collision during transmission.

B. The host is able to detect the transmission speed of the Ethernet switch port to which the host is connected.

C. The host will only transmit data when it detects that no other devices are transmitting.

D. The host will only transmit upon a timer expiry.

E. The host will only transmit when it receives the token.

Correct Answer: C

Question number seventy-one. Topic one

What is the effective maximum rate of data transmission on a ten megabit per second full-duplex Ethernet link?

A. Five megabit per second.

B. Ten megabit per second.

C. Fifteen megabit per second.

D. Twenty megabit per second.

Correct Answer: D

Question number seventy-two. Topic one

Which of the following Ethernet rates requires an optical cable to operate?

A. Ten megabit per second Ethernet.

B. One hundred megabit per second Ethernet.

C. One thousand megabit per second Ethernet.

D. There are copper and optical versions possible for all of these Ethernet data rates.

Correct Answer: D

What distance is supported using CAT-five cabling for ten, one hundred, one thousand TX?

A. One hundred meters.

B. Five hundred meters.

C. One kilometer.

D. Ten kilometers.

Correct Answer: A

Question number seventy-four. Topic one

Which of the following statements is TRUE of Layer three addressing?

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

B. Every Host device must have a unique Layer three address in order to access the Internet.

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

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

Correct Answer: B

Question number seventy-five. Topic one

Which of the following is a characteristic of the IP layer?

A. Provides an unreliable, connectionless data transmission service.

B. Provides a mechanism for flow control.

C. Verifies the integrity of all received datagrams.

D. Provides services equivalent to the OSI data link layer.

Correct Answer: A

Question number seventy-six. Topic one

The physical networks connecting two PCs to the internet are DSL and PPP respectively. Which layer will enable the two PCs to communicate?

A. Layer one

B. Layer two

C. Layer three

D. Layer four

Correct Answer: C

Hosts in the same IP network share which common address feature?

A. Same host numbers.

C. First two bits of the IP address are set to zero one.

D. Same network prefix.

Question number seventy-eight. Topic one

A Class C network is defined by a:

A. Thirty-two-bit network prefix.

B. Twenty-four-bit network prefix.

C. Sixteen-bit network.

D. Eight-bit network.

Correct Answer: B

Question number seventy-nine. Topic one

Public IP address spaces are distributed by which of the following organizations?

A. Network Solutions Incorporated

B. I A N A

C. I E T F

D. I T U-T

E. IEEE

Question number eighty. Topic one

What characteristic of IP addressing creates a hierarchical network?

A. All hosts on all networks must have unique host numbers.

B. IP addresses identify a host and the network on which it resides.

C. Clients are assigned thirty-two-bit addresses and servers sixty-four-bit addresses.

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

Correct Answer: B

Which of the following is a private IP network address reserved by the I A N A?

A. one seventy-two point thirty point zero point zero slash sixteen

B. one ninety-two point one hundred point zero point zero slash twenty-four

D. one sixty-nine point two fifty-four point zero point zero slash sixteen

E. eleven point zero point zero point zero slash eight

What is the purpose of the broadcast address?

A. Provides an address that refers to all the devices in a given network.

B. Provides an address to refer to a specific group of devices in a given network.

C. Provides an address to refer to a group of devices having the same IP addresses in different Layer two networks.

D. Provides an address to refer to a single device on a given network.

Correct Answer: A

Question number eighty-six

Which three of the following are important considerations when designing subnets? Choose three.

A. Number of subnetworks currently required.

B. Type of physical connectivity used by each segment.

C. Future network growth requirements.

D. Number of hosts each subnetwork will support.

E. Class of the network address to be used for the network.

Correct Answer: A C D

Question number eighty-seven

Network address: two hundred point twelve point thirty point zero -

Network mask: two fifty-five point two fifty-five point two fifty-five point zero -

Use the information above. You need to create twelve subnetworks supporting ten host addresses each. Which extended prefix will meet this requirement?

A. slash twelve

B. slash twenty-four

C. slash twenty-six

D. slash twenty-eight

E. slash thirty

Correct Answer: D