第 1 題：Match the following application layer services to their corresponding transport layer protocol port. (匹配下列的應用層服務和它們對應的傳輸層協議端口)：
A. SMTP 1. TCP/23
B. FTP 2. TCP/25
C. TFTP 3. TCP/80
D. Te l n e t 4. TCP/21
E. HTTP 5. UDP/69
F. DNS 6. TCP/53
【正確答案】：A, B, C, D, E, F, G
【答案解析】：
第 2 題：Which OSI reference model layer does Telnet function at (Te l n e t在哪一個O S I參考模型層運作)?
A. Transport
B. Network
C. Session
D. Application
【正確答案】：D
【答案解析】：
第 3 題：How many layers does the TCP/IP protocol suite have, compared to the OSI reference model (和O S I參考模型相比，T C P / I P協議具有幾層)?
A. TCP model has 4, OSI model has 6
B. TCP model has 7, OSI model has 8
C. TCP model has 4, OSI model has 7
D. TCP model has 7, OSI model has 4
【正確答案】：C
【答案解析】：
第 4 題：The TCP/IP protocol suite has a formal session layer that includes NetBIOS、RPCs and TLI functions (TCP/IP協議套件具有包含N e t B I O S、R P C和T L I功能的一個正式的會話層)。
A. True
B. False
【正確答案】：B
【答案解析】：
第 5 題：What is the function of RPCs (RPC的功能是什麼)?
A. To move files from remote PCs to a local PC
B. To make remote function calls transparent, so they appear to be local
C. To initialize a program on a remote PC
D. To send a procedure that is local to a remote node for processing elsewhere
【正確答案】：B
【答案解析】：
第 6 題：What does RPC stand for (RPC代表什麼)?
A. Remote personal computer
B. Reserved-programming call
C. Routed-procedure call
D. Remote-procedure call
【正確答案】：D
【答案解析】：
第 7 題：What OSI reference model layer do sockets function at (套接字在O S I參考模型的哪層運作)?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data link
G. Physical
【正確答案】：C
【答案解析】：
第 8 題：What function do sockets perform (套接字的功能是什麼)?
A. They make remote functions appear local, transparent to the user
B. They transfer files to and from remote nodes
C. They make the transport layer independent
D. They allow multiple applications to share the same connection to the network
【正確答案】：D
【答案解析】：
第 9 題：What is WinSock (什麼是Wi n S o c k )?
A. A version of sockets for the Microsoft Windows platform
B. Sockets on BSD UNIX
C. A session layer API commonly considered to be its own protocol
D. A network layer service for Microsoft Wi n d o w s
【正確答案】：A
【答案解析】：
第 10 題：What does TLI do (TLI的作用是什麼)?
A. It makes remote functions appear local, transparent to the user
B. It transfers files to and from remote nodes
C. It makes the transport layer independent
D. It allows multiple applications to share the same connection to the network
【正確答案】：C
【答案解析】：
第 11 題：What OSI layer does NetBIOS function at (NetBIOS在O S I哪一層運作)?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data Link
G. Physical
【正確答案】：C
【答案解析】：
第 12 題：Which protocols can NetBIOS bind to? (Select all that are applicable.) (NETBIOS可以綁定在哪個協議上，選擇所有可能的協議)?
A. Appletalk
B. IPX
C. IP
D. NetBEUI
【正確答案】：B
【答案解析】：
第 13 題：What layers do not exist in the TCP/IP model that are in the OSI model (哪層不在T C P / I P模型中，但它在O S I模型中)?
A. Application, presentation, and network
B. Presentation, session, and data link
C. Session, network, and physical
D. Presentation, data link, and physical
【正確答案】：B
【答案解析】：
第 14 題：What is a socket in the transport layer (傳輸層中的套接字是什麼)?
A. The socket is an IP address plus a port
B. An API that makes the transport layer independent
C. An API that allows multiple applications to share a network connection
D. A function that makes remote procedures appear to be local
【正確答案】：A
【答案解析】：
第 15 題：What is a port (什麼是端口)?
A. An API that makes the transport layer independent
B. An API that allows multiple applications to share a network connection
C. A function that makes remote procedures appear to be local
D. The point where upper-layer processes access transport layer services
【正確答案】：D
【答案解析】：
第 16 題：Which of the following services uses a process called windowing (下面的哪一個服務使用了所謂的窗口機制)?
A. Reliable data transfer
B. Connection-oriented virtual circuit
C. Buffered transfer
D. Resequencing
E. Multiplexing
F. Efficient, full-duplex transmission
G. Flow control
【正確答案】：G
【答案解析】：
第 17 題：What is UDP (什麼是U D P )?
A. An API that makes the transport layer independent
B. A connectionless, unreliable transport protocol
C. An API that allows multiple applications to share a network connection
D. A function that makes remote procedures appear to be local
【正確答案】：B
【答案解析】：
第 18 題：What is IP (什麼是I P )?
A. It is the transport mechanism for upper layer services
B. It is the session layer API for making the transport layer independent
C. It is the network layer protocol that moves data from one node to another
D. It is the physical layer protocol for Internet connections
【正確答案】：C
【答案解析】：
第 19 題：What is ICMP (什麼是I C M P )?
A. It is a network layer protocol that handles control messages
B. It is a network layer protocol that resolves addresses
C. It is a session layer API that makes remote procedures transparent to a user
D. It is a transport layer function for unreliable transport
【正確答案】：A
【答案解析】：
第 20 題：Ping sends an ICMP echo command to an IP address in order to determine whether anetwork connection exists to that node (Ping向一個I P地址發送了一個I C M P回送命令，目的是確定是否存在到那個節點的網絡連接)?
A. True
B. False
【正確答案】：A
【答案解析】：
第 21 題：Which of the following best describes TCP/IP (下面的哪句話最準確地說明了T C P / I P )?
A. A static protocol
B. A proprietary protocol
C. A collection of internetworking protocols
【正確答案】：C
【答案解析】：
第 22 題：UDP and TCP represent mechanisms used by which layer of the TCP/IP (UDP和T C P表示了T C P / I P的哪層使用的機制)?
A. Data link layer
B. Physical layer
C. Presentation layer
D. Transport layer
【正確答案】：D
【答案解析】：
第 23 題：RPCs provide which of the following (RPC提供了下面的哪個功能)?
A. Connection-oriented session
B. Transparency to make remote calls look local
C. Portability of applications between heterogeneous systems
D. A and C only
E. B and C only
F. A, B, and C
【正確答案】：E
【答案解析】：
第 24 題：Distributed Computing Environment (DCE) is an example of (分佈式計算環境( D E C )是下面的哪一項的一個例子)?
A. OSI model
B. RPC implementation
C. Extreme Data Representation
D. A and B
【正確答案】：B
【答案解析】：
第 25 題：Which statement is true of WinSock (下面對Wi n S o c k的哪一句陳述是正確的)?
A. It is a MAC application
B. It represents a graphical user interface
C. It represents a network layer
D. It provides the means for sharing an Internet connection between multiple IP protocol suite utilities
【正確答案】：D
【答案解析】：
第 26 題：Which statement is true of TLI (下面關於T L I的哪一句陳述是正確的)?
A. It is a layer in the OSI model
B. It is a layer in the TCP/IP model
C. It is a System V API
D. It is part of the UNIX Kernel
【正確答案】：C
【答案解析】：
第 27 題：Which statement is true of Windows Name Server (WINS) (下面對於Windows 命名服務器( W I N S )的陳述中，哪一句是正確的)?
A. It is a protocol
B. It provides capability for name resolution
C. It is a network layer
D. It is a proprietary name server
E. A, B, and D only
F. B and D only
【正確答案】：F
【答案解析】：
第 28 題：ICMP、I P、ARP and RARP of the IP protocol suite map to (IP協議套件的I C M P、I P、A R P和R A R P映射到)：
A. OSI layers 1 and 2
B. OSI layer 5
C. OSI layer 3
D. OSI layer 2
【正確答案】：C
【答案解析】：
第 29 題：Which layer is most important in providing reliable data exchange between two systems(在兩個系統之間提供可靠的數據交換中，哪一層是最重要的)?
A. Physical layer
B. Data link layer
C. Session layer
D. Transport layer
【正確答案】：D
【答案解析】：
第 30 題：Which of the following does TCP provide (TCP提供了下面的哪一個功能)?
A. Unreliable data stream
B. Connectionless virtual circuit
C. Flow control
D. Structured byte stream movement
【正確答案】：C
【答案解析】：
第 31 題：Of the following, which field is not a part of the TCP header (在下面各項中，哪一個字段不是T C P報頭的一部分)?
A. Subnet mask
B. Sequence number
C. Data offset
D. Destination port
【正確答案】：A
【答案解析】：
第 32 題：What is the sequence number in a TCP header used for (在T C P報頭中的順序號的作用是什麼)?
A. Acknowledgments
B. Reordering of the octets received
C. Rejecting duplicate octets
D. All of the above
【正確答案】：D
【答案解析】：
第 33 題：Variable sliding windows provide an explicit mechanism for notifying TCP if an intermediate node (for example, a router) becomes congested (在中間節點，例如一個路由器擁塞的情況下，可變滑動窗口提供了通知T C P的顯式機制)。
A. True
B. False
【正確答案】：B
【答案解析】：
第 34 題：Which of the following parameters is not a part of UDP header (下面的哪一個參數不是U D P報頭的一部分)?
A. Source port
B. Urgent pointer
C. Checksum
D. Length
E. Destination port
【正確答案】：B
【答案解析】：
第 35 題：When a router has been configured for UDP flooding, the source address might change,but the destination address will not change as the datagram propagates through the network (當一個路由器已經配置爲U D P泛洪時，當數據報在網絡上傳播的過程中，源地址可能改變，但是目的地址不會改變)?
A. True
B. False
【正確答案】：B
【答案解析】：
第 36 題：The spanning-tree algorithm allows (生成樹算法允許)：
A. Forwarding of packets with no control
B. Forwarding of broadcasts to an interface which already has received the broadcast
C. Prevention of duplication of forwarding of packets
D. A and B only
【正確答案】：C
【答案解析】：
第 37 題：IP helper addresses are a form of _ _ _ _ _ _ _ _ _ _ _ _ _ _ addressing and require the command specification of _ _ _ _ _ _ _ _ _on every interface receiving broadcasts that need to be forwarded (IP輔助地址是一種什麼類型的尋址方法，在每一個接收到需要轉發的廣播接口上需要什麼命令說明)?
A. Static / IP header address
B. Dynamic / IP forward-protocol UDP
C. Dynamic / IP forward-protocol TCP
【正確答案】：A
【答案解析】：
第 38 題：Which of the following protocols provide address resolution (下面的哪一個協議提供了地址解析)?
A. ICMP
B. RARP
C. IP
D. UDP
E. TCP
【正確答案】：B
【答案解析】：
第 39 題：IP is described as an unreliable mechanism because it does not guarantee delivery (IP被認爲是不可靠的機制，因爲它不保證發送)。
A. True
B. False
【正確答案】：A
【答案解析】：
第 40 題：What does fragmentation in TCP/IP represent (在T C P / I P中的分段代表什麼)?
A. Segmenting of datagrams into 53-byte packets for ATM applications
B. Division of larger datagrams into convenient size packets
C. A process that occurs on a router
D. A, B, and C
E. A and C only
F. B and C only
【正確答案】：F
【答案解析】：
第 41 題：Which of the following statements is true of ARP (下面對A R P的陳述中，哪一個是正確的)?
A. It makes a MAC address logically independent of the physical hardware
B. It makes it necessary for the administrator to physically manage the MAC address of each N I C
C. It integrates routing function with the physical and data link layers
D. It routes packets based on destination host, not on destination network
【正確答案】：A
【答案解析】：
第 42 題：A host’s ARP cache is good forever once it has been created (一個主機的A R P高速緩存 一旦創建，則它永遠工作良好)。
A. True
B. False
【正確答案】：B
【答案解析】：
第 43 題：ARP is a broadcast protocol, and ARP caching is used because broadcasts are expensive ( A R P是一個廣播協議，並且使用了A R P高速緩存，原因是廣播太昂貴了)。
A. True
B. False
【正確答案】：A
【答案解析】：
第 44 題：Reverse Address Resolution Protocol (RARP) is termed“r e v e r s e”because (反向地址解析協議( R A R P )中的“反向”的含義是)：
A. It is used by the system that knows its IP address but does not know its MAC address
B. It is used by the system that knows its MAC address but does not know its IP address
C. It is used by the system that knows the destination’s IP address but does not know the d e s t i n a t i o n ’s MAC address
D. It is used by the system that knows the destination’s MAC address but does not know the d e s t i n a t i o n ’s IP address
【正確答案】：B
【答案解析】：
第 45 題：Inverse Address Resolution Protocol (InARP) is generally used by (逆向地址解析協議( I n A R P )通常由什麼使用)?
A. Broadcast networks
B. Nonbroadcast networks
C. Both broadcast and nonbroadcast networks
【正確答案】：B
【答案解析】：
第 46 題：The PING command makes use of what ICMP parameter (PING命令使用了什麼I C M P參數)?
A. Redirect
B. Source quench
C. Echo reply
D. Destination unreachable
【正確答案】：C
【答案解析】：
第 47 題：ICMP Redirect is sent by (ICMP重定向由什麼發出)?
A. A host to the gateway
B. A gateway to the host
C. A router to another router
D. A router to a network
【正確答案】：B