QUESTION 1 ________ has an advantage as a backbone or MAN technology in that it

Question

QUESTION 1 ________ has an advantage as a backbone or MAN technology in that it requires no encapsulation from the protocols already running on the network. a. X.25 b. ATM c. Frame Relay d. Gigabit Ethernet

QUESTION 2 A(n) ______ line allows organizations to use only some of the channels on a T1 line and be charged according to the number of channels they use. a. frame relay b. basic T1 c. partial T1 d. fractional T1

QUESTION 3 The Internet2 is a. Another name for ARPANET b. An commercial endeavor started by a small ISP. c. none of the above d. A next generation Internet.with very high-speed lines, using IPv6.

QUESTION 4 ______________ issues requests for comments that form the basis for Internet technical standards a. An RFP b. IANA c. OSI d. IETF

QUESTION 5 Cutting the communications line to the college’s Internet provider caues a loss of _________. a. Integrity b. Availability c. Confidentiality d. Accountabilty

QUESTION 6 The local telephone network is an example of a _________ network. a. none of the above b. message-switched c. circuit-switched d. packet-switched

QUESTION 7 A form of digital phone service in which the two data channels have different speeds, allowing for faster download rates, but slower upload rates. a. Very high data rate DSL (VDSL) b. Cable modem c. Symmetric DSL (SDSL) d. Asymmetric DSL (ADSL)

QUESTION 8 _________ are private networks logically defined over public transmission systems, such as the Internet. a. VPNs b. Web portals c. Transponders d. Hot spots

QUESTION 9 ____________ is an analog, packet-switched technology designed for long-distance data transmission and standardized by the ITU in the mid-1970s. a. T-Carrier b. E1 c. 802.16 d. X.25

QUESTION 10 A __________ backbone architecture uses a central switch to which the other LANs are connected. a. bus b. collapsed c. routed d. star

QUESTION 11 An interconnection of ISPs on the Internet backbone. a. ISP b. RAS c. PoP d. NAP

QUESTION 12 ATM relies on _____ circuits, which are connections between network nodes that, while based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes. a. priority b. virtual c. available d. direct

QUESTION 13 ATM transmits data using small, fixed size __________. a. frames b. datagrams c. packets d. cells

QUESTION 14 The primary disadvantage of a fully meshed architecture is _____________. a. It is complex to manage b. it does not perform as well as other architectures c. it does not provide fault tolerance d. it is expensive

QUESTION 15 A ___________ utilizes switches to create these virtual networks using either MAC addresses, ports, or IP addresses if they operate at Layer 3. a. VLAN b. VPN c. PAT d. NAT

QUESTION 16 Which of the following would describe Northern Virginia's NVCC network in which network resources are located at all 5 campuses, yet in different cities where the media is owned by the telecom carrier? a. BN b. WAN c. MAN d. LAN

QUESTION 17 The ________ was the original name of the global network of networks that we surf today. a. Internet b. DARPA c. ARPANET d. WWW

QUESTION 18 The _____________ is the part of the backbone that usually runs through the building to connect local area networks together. a. Access Layer b. Data Link Layer c. Distribution Layer d. Core Layer

QUESTION 19 A _________ operates at the network layer and figures out the best path to take to get a packet to its next destination. a. hub b. gateway (protocol) c. router d. switch QUESTION 20 Who developed the World Wide Web? a. Bob Metcalf b. Tim Berners-Lee c. Bill Gates d. Mark Andreeson

QUESTION 21 Who developed the first graphical browser? a. Bob Metcalf b. Mark Andreeson c. Tim Berners-Lee d. Bill Gates

QUESTION 22 Who developed email? a. Ray Tomplinson b. Bob Metcalf c. Vinton Cerf d. Bill Gates

QUESTION 23 Who developed TCP/IP? a. Vinton Cerf b. Bob Metcalf c. Ray Tomplinson d. Bill Gates

QUESTION 24 Who developed Ethernet? a. Bob Metcalf b. Vinton Cerf c. Ray Tomplinson d. Bill Gates

QUESTION 25 The first graphical browser was a. Netscape b. Mozilla c. Internet Explorer d. Mosaic

Explanation / Answer

1- frame relay is a standardized wide area network technology that specifies the physical and data link layers of digital telecommunications channels using a packet switching methodology. It requireno encapsulation from protocol already in network.

2-Fractional T1 allows some of channels on T1 and pay accordingly.

3-Internet2 is a next generation with a very high speed lines using ipv6.

4-IETF request for comments for better standaization of internet on technical basis.

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