Question No : 1
Which of the following are examples of Time Division Multiplexing (Choose two)?

• A.Ethernet.
• B.Token-Ring.
• C.SONET/SD
• D.E1 carrier.
• E.PPP

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Question No : 2
What is the basic unit of framing in SONET and the bit rate for its transmission?

• A.STS-1 with a bit rate of 1.544 Mbit/s
• B.STS-1 with a bit rate of 2.048 Mbit/s
• C.STS-1 with a bit rate of 51.84 Mbit/s
• D.STS-1 with a bit rate of 155.52 Mbit/s

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Question No : 3
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.

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Question No : 4
A typical Nokia 7750 SR Media Dependent Adapter (MDA) interfaces with:

• A.A Small Form-Factor Pluggable (SFP) module.
• B.The Central Processing Unit (CPU).
• C.The Control Plane.
• D.The Switch Fabric.

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Question No : 5
Which of the following Ethernet rates requires an optical cable to operate?

• A.10 Mb/s Ethernet.
• B.100 Mb/s Ethernet.
• C.1000 Mb/s Ethernet .
• D.There are copper and optical versions possible for all of these Ethernet data rates.

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Question No : 6
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 2 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.

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Question No : 7
What is available for auto completion of commands within the CLI on the Nokia 7750 SR Service Router?

• A.Type the first letters of the command, then press Ctrl C
• B.Type the first letters of the command, then press Esc
• C.Type the first letters of the command, then press Tab
• D.Type the first letters of the command, then type ?

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Question No : 8
Kahn solved the problem of interconnecting different networks using different protocols by pioneering a new protocol called TCP that was capable of:

• A.Secure transmission of information.
• B.Enforcing a constant packet size to avoid discards.
• C.Allowing remote logins.
• D.Providing host to host connectivity with global addressing.

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Question No : 9
Which organization eventually became the standards body for IP and related protocols?

• A.IEEE
• B.IETF
• C.NSFNET
• D.ITU-T
• E.APNIC

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Question No : 10
Which of the following is not supported on the Nokia 7450 ESS?

• A.Support for IPv6.
• B.Support for PO
• C.Upgrade path to the Nokia 7750 S
• D.Support for IS-IS

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