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GCE MAY 2009 : ( A2 13) Networking and Communications

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Centre Number 71 Candidate Number ADVANCED General Certificate of Education 2009 Applied Information and Communication Technology A6J71 Assessment Unit A2 13 assessing Unit 13: Networking and Communications [A6J71] TUESDAY 19 MAY, AFTERNOON For Examiner s use only TIME 1 hour 30 minutes. Marks Question available Write your Centre Number and Candidate Number in the spaces provided at the top of this page. Answer all seventeen questions on the paper in the spaces provided. Quality of written communication will be assessed in all questions. INFORMATION FOR CANDIDATES The total mark for this paper is 100. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. ADVICE TO CANDIDATES You are advised to take account of the marks for each part question in allocating the available examination time. 4665 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 4 4 4 4 4 6 4 6 6 5 5 6 6 10 12 8 6 Total INSTRUCTIONS TO CANDIDATES 100 Marks Remark 1 Explain the following. Examiner Only Marks Remark A star network is ______________________________________________ ____________________________________________________________ ____________________________________________________________ A ring network is ______________________________________________ ____________________________________________________________ ____________________________________________________________ A bus network is ______________________________________________ ____________________________________________________________ ____________________________________________________________ A LAN is ____________________________________________________ ____________________________________________________________ __________________________________________________________ [4] 2 In the box below tick ( ) the items that need not be present to enable a small local area network to be set up. Cable Bridge Two computers Serial port Printer Broadband connection 4665 [4] 2 [Turn over 3 Choose the correct words from the list below to fill in the blanks in the sentences describing the device known as a hub. data segments printers packet signal Examiner Only Marks Remark ports A hub is a common connection point for devices in a network. Hubs are commonly used to connect _________________ in a LAN. A hub can contain multiple _________________. When a _________________ arrives at one port, it is retransmitted to all other ports on the hub. The hub simply serves as a conduit for the _________________. 4 [4] In the box below tick ( ) four acronyms that may be associated with synchronous data transmission Block Cyclic Check (BCC) Acknowledge (ACK) Parity Check (PC) Start of Text (STX) Synchronise Timers (SYN) End of Broadcast (EOB) 4665 [4] 3 [Turn over 5 In the box below tick ( ) four features that would be associated with the Ethernet protocol. Examiner Only Marks Remark Baseband Shared medium Carrier sense Broadband Multiple access Bluetooth 6 [4] List and describe three main features associated with a switch. Feature 1 ____________________________________________________ ____________________________________________________________ ____________________________________________________________ Feature 2 ____________________________________________________ ____________________________________________________________ ____________________________________________________________ Feature 3 ____________________________________________________ ____________________________________________________________ __________________________________________________________ [6] 4665 4 [Turn over 7 In the box below tick ( ) four appropriate phrases that could be used to describe Dynamic Host Control Protocol (DHCP). Examiner Only Marks Remark It sets up the serial port to receive data transmissions It controls the printer drivers used in the network It is a protocol for assigning or supplying IP addresses It simpli es network administration It supports a mix of static and supplied IP addressing It helps set up Instant Messaging It can assign router or gateway addresses [4] 8 Complete the sentences in the box below by inserting the correct number. 1. IP addressing 2. A subnet mask 3. TCP/IP 4. A MAC address 5. An IP address 6. ARP is a unique identi er associated with an item of networking equipment. is a discovery protocol used to match a MAC address with an IP address. is used to determine the host section of a network. allows the management of network traf c to become easier and more practical. is a protocol used on the Internet. can pass through many routers on its way from source to destination. [6] 4665 5 [Turn over 9 Each of the following sentences about networking is either true or false. Place the word true or false correctly into the space opposite each sentence. Examiner Only Marks Remark A rewall is a security feature that prevents an internal network or PC being entered by unauthorised users. Wireless networking can use a type of security known as WEP. A le server is a dedicated piece of hardware that handles all software updates. A software engineer s main task is to set up users access rights and permissions. DNS is a system that translates domain names into IP addresses. Denial of Service (DoS) is a type of computer virus. [6] 10 Choose and insert a correct word from the list below to complete the section on video conferencing. multipoint ISDN microphone hotspots Internet RAM Ethernet point-to-point e-mail address Instant Messaging Video conferencing uses a computer, video camera, ___________________ and a network such as the ___________________ to conduct a live conference between two or more people. A two person video conference is known as ___________________, while more than two involved in a session is known as ___________________. It may use ___________________ as a connection tool. 4665 6 [5] [Turn over 11 In the box below tick ( ) all the features below that you would expect to find associated with a wireless network. Examiner Only Marks Remark It uses radio to transmit data. It is more secure than wired systems. It uses the same network card as found in non wireless systems. It can be subject to war-driving. It can be used in locations having hotspots . It needs an antenna to function. It may be subject to interference from devices operating at the same frequency. [5] 12 e-mail is a very important business tool today. Identify two business features provided by e-mail and explain how to use each feature. e-mail business feature 1: _______________________________________ ____________________________________________________________ e-mail business explanation 1: ___________________________________ ____________________________________________________________ ____________________________________________________________ e-mail business feature 2: _______________________________________ ____________________________________________________________ e-mail business explanation 2: ___________________________________ ____________________________________________________________ __________________________________________________________ [6] 4665 7 [Turn over 13 In companies, Acceptable Use Policies (AUP) are in place to ensure appropriate use of the Internet. Name and describe three items that would normally be found in such an AUP. Examiner Only Marks Remark Name 1: _____________________________________________________ Description 1: ________________________________________________ ____________________________________________________________ Name 2: _____________________________________________________ Description 2: ________________________________________________ ____________________________________________________________ Name 3: _____________________________________________________ Description 3: ________________________________________________ __________________________________________________________ [6] 4665 8 [Turn over 14 Choose the correct word from the list below to fill in the blanks in the paragraph describing client server networks. performance client domain environment function reliability cost server Examiner Only Marks Remark centralised security In a client server network the _________________ is an individual user s computer or application that does a certain amount of processing on its own. The _________________ consists of one or more computers that receives and processes requests. In a small organisation a single server machine may have more than one _________________. A computer used to authenticate access and log-in to the computer system itself is called a _________________ controller. Client server architecture combines the best concepts in _________________ robust infrastructure. If implemented properly this architecture achieves the best balance between complexity, _________________ and ease of use with excellent scalability and _________________. The client server _________________ is a system with advantages such as _________________ and _________________. [10] 4665 9 [Turn over 15 Describe three features of each of the following Examiner Only Marks Remark Computer virus 1. __________________________________________________________ ____________________________________________________________ 2. __________________________________________________________ ____________________________________________________________ 3. __________________________________________________________ ____________________________________________________________ Trojan horse 1. __________________________________________________________ ____________________________________________________________ 2. __________________________________________________________ ____________________________________________________________ 3. __________________________________________________________ ____________________________________________________________ Worm 1. __________________________________________________________ ____________________________________________________________ 2. __________________________________________________________ ____________________________________________________________ 3. __________________________________________________________ ____________________________________________________________ 4665 10 [Turn over Denial of service attack Examiner Only Marks Remark 1. __________________________________________________________ ____________________________________________________________ 2. __________________________________________________________ ____________________________________________________________ 3. __________________________________________________________ _________________________________________________________ [12] 16 Complete the following sentences by filling in the blanks in the table below. PSDN is a is used as a communications medium especially used in video conferencing Broadband transmission is a data transmission medium which can Bandwidth is a measure of the A proxy server is is the text name corresponding to the numeric IP address of a computer on the Internet. IP is is the system which translates URL domain names into IP addresses. [8] 4665 11 [Turn over 17 Choose the correct words from the list below to complete the paragraph on multi-site connection. shared private public dedicated encrypted tunnelling addressed Remark token Internet Examiner Only Marks packet VPN (Virtual Private Networks) usually refers to a network in which some of the parts are connected using the __________________ Internet, but the data sent across the Internet is __________________, so the entire network is virtually private. It is a way to communicate through a __________________ server securely to a corporate network over the Internet. There will be general access to the __________________ rather than leased lines for connections. Security can be guaranteed by the use of __________________ in which the entire information __________________ is encapsulated. [6] THIS IS THE END OF THE QUESTION PAPER 4665 12 [Turn over 937-046-1 4665 16 [Turn over

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Additional Info : Gce Applied ICT May 2009 Assessment Unit A2 13 - Networking and Communications
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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