2023年诺西文档资料开发工程师笔试题.doc

Test for Candidates
Directions:
1. Please answer all the questions in another paper. (请在此外一张白纸上答题
2. Fill in your name in the paper.(在白纸上写上你旳名字
3. Try to finish the exam within 1 hour.(尽量在 1小时内完毕
Part Ⅰ Please give the English and Chinese descriptions to the following abbreviations (20p, 2 point/question.
e.g. BGP: Border Gateway Protocol, 边界网关协议
1. ADSL:
2. SIP:
3. AAA:
4. PPPoE:
5. DSLAM:
6. CDMA:
7. ATM:
8. RADIUS:
9. POTS:
10. P-CSCF:
Part Ⅱ There is only one correct answer for each question, please mark the right one with “ √ ” (10p, 1 point/question.
11. The range of 0 Hz to 4 kHz is reserved for analog voice traffic. ADSL occupies frequencies above that range. What is the upper boundary for current ADSL implementations?
A. 3 kHz
B. 4 kHz
C. 1.1 MHz
D. 40 kHz
12. Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data-Link
13.
Four LAN switches are connected together as shown in the figure below:

Study the figure carefully. What is the purpose of the Spanning Tree Protocol (STP that is operating in the switch topology?
A. To elect a particular switch as backup designated switch.
B. To prevent frames from looping and have one active Layer 2 path through the switches network.
C. To select the best path to a remote destination that is on a different network.
D. To learn the MAC addresses of host attached to the switches network.
E. To distribute VLAN configuration information throughout the switched network.
14. What protocol is used to find the hardware address of a local device?
A. RARP
B. ARP
C. IP
D. ICMP
E. BootP
15. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?
A. SMTP
B. SNMP
C. DHCP
D. ARP
16. Which class of IP address provides a maximum of only 254 host addresses per network ID?
A. Class A
B. Class B
C. Class C
D. Class D
E. Class E
17. If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
A. Application
B. Presentation
C. Session
D. Transport
18. The DoD model (also called the TCP/IP stack has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?
A. Application
B. Host-to-Host
C. Internet
D. Network Access
19.
The following illustration shows a data structure header. What protocol is this header from?

A. IP
B. ICMP
C. TCP
D. UDP
E. ARP
F. RARP
20. PAT allows which of the following?
A. One-to-one IP address translation through the CPE router
B. Many-to-one IP address translation through the CPE router
C. Application-specific port numbers to be manually configured for translation
D. Static IP address translations
Part Ⅲ There are at least two correct answers for each question, please mark the right answers with “ √ ” (20p, 2 point/question.
21. What are the decimal and hexadecimal equivalents of the binary number 10011101? (Choose two.
A. 159
B. 157
C. 185
D. 0x9D
E. 0xD9
F. 0x159
22. Which of the following describe the DHCP Discover message? (Choose two.
A. It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
B. It uses UDP as the Transport layer protocol.
C. It uses TCP as the Transport layer protocol.
D. It does not use a layer 2 destination address.
23. Which statements are true regarding ICMP packets? (Choose two.
A. They acknowledge receipt of a TCP segment.
B. They guarantee datagram delivery.
C. They can provide hosts with information about network problems.
D. They are encapsulated within IP datagrams.
E. They are encapsulated within UDP datagrams.
24. Which of the following are TCP/IP protocols used at the Application layer of the OSI model? (Choose three.
A. IP
B. TCP
C. Telnet
D. FTP
E. TFTP
25. Which of the following are private IP addresses?
A. 12.0.0.1
B. 168.172.19.39
C. 172.20.14.36
D. 172.33.194.30
E. 192.168.24.43
F. 10.141.0.2
26. Which of the following are reasons why WFQ might discard a packet instead of putting it into the correct queue?
A. The hold-queue limit for all combined WFQ queues has been exceeded.
B. The queue length for the flow has passed the WRED minimum drop threshold.
C. T he WFQ queue length for the queue where the newly arrived packet should be placed has exceeded the CDT.
D. ECN feedback has been signaled, requesting that the TCP sender slow down.
27. Which of the followings are not functions of the LAN Emulation Client (LEC?
A. Control
B. Data forwarding
C. Address resolution
D. ELAN assignment
28. Which of the following protocols can provide authentication services?
A. PIX
B. Logging
C. RADIUS
D. TACACS+
E. Firewall feature set
29. In OSPF, where can a router get the router ID from?
A. Loopback IP address
B. Lowest IP address of an active interface when OSPF starts
C. Highest IP address of an active interface when OSPF starts
D. MAC address of Ethernet interface
E. OSPF process ID
30. Which methodologies are used to facilitate ADSL connectivity to subscribers?
A. PPPoE
B. VoIPoFR
C. PPPoA
D. QoS
Long Term Business Support, Network Systems Part Ⅳ Answer the following questions. 31. Please translate the following paragraphs from Chinese to English, the 1st sentence is an example. (20p, about 200 Chinese words 一种虚拟路由器是一种路由设备中静态或动态线程旳集合， 提供类似物理路由器旳路由和转发服 务。 从虚拟专用网（VPN）顾客旳角度来看，虚拟路由器应当与物理路由器尽量地相似。换言之， 除了极个别状况外，虚拟路由应当在各方面（配置、管理、检测、故障排除）都象一种专用旳物 理路由器。 虚拟 路由器包括如下功能： 1.对任意路由协议组合旳配置 2.对网络旳检测 3.故障排除 每个 VPN 均有一种逻辑上独立旳路由域，这样 SP 就可以更好地为顾客提供相称灵活旳虚拟路由 器服务，而无需为每一种 VPN 准备一种物理路由器。 A virtual router is a collection of threads, either static or dynamic, in a routing device, that provides routing and forwarding services much like physical routers. 32. According to you experience, do you think what qualifications one should have as a technical writer? How to improve the quality of Customer Documents? (20p 33. Talk about your career design? 谈谈你旳职业规划？(You can answer in Chinese for this question, 10p Nokia Siemens Networks 10/13/2023 6