Đề thi Mạng MáyTính - Mạng Căn Bản

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Headshot ~ 100% Đề thi Mạng Máy Tính 1. Mạng Căn Bản. Question 1 Điểm : --/2 To send data through a network, what two flags are used to establish a session? (Choose two.) Chọn ít nhất một câu trả lời CRC Port # Seq # Ack # SYN ACK Question 2 Điểm : --/2 Which OSI layer addressing is required to route packets between two networks? Chọn một phương án trả lời. Layer 2 Layer 3 Layer 1 Layer 4 Question 3 Điểm : --/2 Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with its default gateway? Chọn một phương án trả lời. Use the ping 10.0.0.254 command. Use the ping 127.0.0.1 command. Use the ipconfig/all command. Use the ipconfig command. Question 4 Điểm : --/2
Refer to the exhibit. All routers in the network are configured with the correct IP addresses and routing protocol. Host A sends a packet to host B. Which exhibited steps will be executed on each of the routers in the network? Chọn một phương án trả lời. Router R1 executes all six steps. Router R2 executes steps 1,2,3,4, and 6. Routers R1 and R2 execute all six steps. Router R1 executes steps 1,2,3,4, and 6. Router R2 executes all six steps. Routers R1 and R2 execute steps 1, 2, 3, 4, and 6. Question 5 Điểm : --/2 Refer to the exhibit. The diagram represents the process of sending e-mail between clients. Which list correctly identifies the component or protocol used at each numbered stage of the diagram? Chọn một phương án trả lời. 1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA 1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA 1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA 1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA Question 6 Điểm : --/2 Which application belongs to the category of the client/server model? Chọn một phương án trả lời. using Telnet to access a router exchanging information via instant messaging scanning a document with a directly connected scanner printing a document to a locally connected printer
Question 7 Điểm : --/2 Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255? Chọn một phương án trả lời. 172.16.128.0 255.255.255.224 172.16.128.0 255.255.224.0 172.16.128.0 255.255.192.0 172.16.128.0 255.255.0.0 172.16.128.0 255.255.255.192 Question 8 Điểm : --/2 Which statement is true about the ICMP protocol? Chọn một phương án trả lời. It is often filtered out of networks for security purposes. It is designed to make IP a reliable protocol. It is an application layer protocol. If a host does not respond to an ICMP echo request, the host is not functioning. Question 9 Điểm : --/2 Refer to the exhibit. A host is connected to hub 1. Which combination of IP address, subnet mask, and default gateway can allow this host to function in the network? Chọn một phương án trả lời. IP address: 172.16.31.63 Subnet mask: 255.255.255.224 Default gateway: 172.16.31.35 IP address: 172.16.31.37 Subnet mask: 255.255.255.224 Default gateway: 172.16.31.35 IP address: 172.16.31.32 Subnet mask: 255.255.255.224 Default gateway: 172.16.31.35 IP address: 172.16.31.36 Subnet mask: 255.255.255.240 Default gateway: 172.16.31.35 IP address: 172.16.31.29 Subnet mask: 255.255.255.248 Default gateway: 172.16.31.35 IP address: 172.16.31.29 Subnet mask: 255.255.255.240 Default gateway: 172.16.30.1 Question 10 Điểm : --/2
Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices? Chọn một phương án trả lời. Connection 1 - straight-through cable Connection 2 - crossover cable Connection 3 - crossover cable Connection 1 - straight-through cable Connection 2 - crossover cable Connection 3 - straight-through cable Connection 1 - crossover cable Connection 2 - rollover cable Connection 3 - crossover cable Connection 1 - rollover cable Connection 2 - straight-through cable Connection 3 - crossover cable Connection 1 - crossover cable Connection 2 - straight-through cable Connection 3 - crossover cable Question 11 Điểm : --/2 A network technician is tasked with setting up a network for six users, but the users should be able to use their accounts to log on from any of the six computers. What type of network should be used? Chọn một phương án trả lời. P2P applications workgroup client-server network peer-to-peer network Question 12 Điểm : --/2 Which two types of media can provide bandwidth up to 1 Gb/s? (Choose two.) Chọn ít nhất một câu trả lời 1000 BASE-SX 10 BASE-T 100 BASE-FX 1000 BASE-TX 100 BASE-T Question 13 Điểm : --/2 Which service is used when the nslookup command is issued on a computer? Chọn một phương án trả lời.
DNS FTP DHCP Telnet Question 14 Điểm : --/2 Refer to the exhibit. A router, the table of which is shown, receives a packet that is destined for 192.168.9.4. How will the router treat the packet? Chọn một phương án trả lời. It will forward the packet via FastEthernet 0/1. It will forward the packet to the next hop address. It will forward the packet to 172.16.2.0 It will drop the packet. Question 15 Điểm : --/2 During the encapsulation process, what identifiers are added at the transport layer? Chọn một phương án trả lời. source and destination IP addresses source and destination port numbers source and destination MAC addresses source and destination channel identifiers Question 16 Điểm : --/3
Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.) Chọn ít nhất một câu trả lời The network of this computer can have 126 hosts. The IP address that is assigned to the computer is routable on the Internet. The computer is unable to communicate outside of the local network. The address that is assigned to the computer represents private addressing. The prefix of the computer address is /27. The IP address that is assigned to the computer is a broadcast address. Question 17 Điểm : --/2 Refer to the exhibit. The tracert command is initiated from PC1 to PC4. Which device will send a response to the initial tracert packet from PC1? Chọn một phương án trả lời. PC4 Ankara Athens Paris London Question 18 Điểm : --/2 An organization has been assigned network ID 10.10.128.0 and subnet mask 255.255.224.0. Which IP address range can be used for this organization? Chọn một phương án trả lời.
10.10.128.0 to 10.10.160.255 10.10.128.0 to 10.10.0.159 10.10.128.0 to 10.10.159.255 10.10.128.0 to 10.10.159.0 10.10.128.0 to 10.10.192.255 Question 19 Điểm : --/2 Refer to the exhibit. Which option correctly identifies the network address, range of host addresses, and the broadcast address for the network that contains host A? Chọn một phương án trả lời. chon Question 20 Điểm : --/2
Refer to the exhibit. Host A is requesting a web page from the web server. Which option represents the socket to which the request is made? Chọn một phương án trả lời. 10.0.0.130:80 www.cisco.com 10.0.0.130 80 Question 21 Điểm : --/2 Refer to the exhibit. A PC is communicating with another PC on a remote network. The two networks are connected by three routers. Which action will help to identify the path between the hosts? Chọn một phương án trả lời. Use the tracert command at the host. Use the ping command at the destination. Use the ipconfig command at the host. Use the ipconfig/all command at the destination.
Question 22 Điểm : --/2 Refer to the exhibit. Which layered network model is shown in the diagram? Chọn một phương án trả lời. TCP/IP OSI IETF Cisco Question 23 Điểm : --/2 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the main office, 40 users in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM addressing scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses? Chọn một phương án trả lời. 192.168.88.0/26 main 192.168.88.64/26 branch 192.168.88.128/27 manufacturing 192.168.88.160/28 sales 192.168.88.176/29 research 192.168.88.0/27 main 192.168.88.64/28 branch 192.168.88.80/28 manufacturing 192.168.88.96/29 sales 192.168.88.104/30 research 192.168.88.0/27 main 192.168.88.32/27 branch 192.168.88.64/28 manufacturing 192.168.88.80/29 sales 192.168.88.88/30 research 192.168.88.0/26 main 192.168.88.32/26 branch
192.168.88.64/26 manufacturing 192.168.88.96/27 sales 192.168.88.128/28 research Question 24 Điểm : --/2 Refer to the exhibit. Host A is able to access resources on the local LAN but is unable to access any resources on the Internet. What is the likely cause of this problem? Chọn một phương án trả lời. The host address is a network address. The network uses private addresses. The host subnet mask in incorrect. The default gateway is on a different subnet from the host. Question 25 Điểm : --/2 Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A? Chọn một phương án trả lời. IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17 IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5 IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1 IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18 IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18 Question 26 Điểm : --/2 Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this? Chọn một phương án trả lời. The gateway addresses are broadcast addresses. Host X is assigned a network address. Host Y is assigned a multicast address. Host X and host Y belong to different networks. Question 27 Điểm : --/2 Refer to the exhibit. Host A uses router A as its default gateway. If host A sends an ICMP echo request to 172.16.10.0, what ICMP response will host A receive. Chọn một phương án trả lời. route redirection source quench destination unreachable echo reply Question 28
Điểm : --/2 Which TCP/IP model layer creates additional overhead on network resources due to acknowledgments, tracking, and retransmission of data? Chọn một phương án trả lời. internet application network access transport Question 29 Điểm : --/2 Refer to the exhibit. The router of the company failed and was replaced. After the replacement, hosts C and D in the Education office are able to ping each other, but they are unable to access the hosts in the Accounts office. What is the likely cause of the problem? Chọn một phương án trả lời. The IP address at the serial interface of the router is incorrectly configured. The subnet mask at the fa0/1 interface of the router is incorrectly entered. The IP address at the fa0/0 interface of the router is incorrectly configured. The hosts in the Accounts office are not on the same subnet as the hosts in the Education office. Question 30 Điểm : --/2 Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network? Chọn một phương án trả lời.
web server address translation DHCP services ftpd Question 31 Điểm : --/2 Which option shows how a router will route packets to a remote network? Chọn một phương án trả lời. chon Question 32 Điểm : --/2 Which two functions of the OSI model occur at layer two? (Choose two.) Chọn ít nhất một câu trả lời routing media access control cabling physical addressing encoding Question 33 Điểm : --/2
Refer to the exhibit. All devices in the network use default configurations. How many broadcast domains are there in this topology? Chọn một phương án trả lời. 9 11 7 5 3 Question 34 Điểm : --/2 Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown? Chọn một phương án trả lời. 5 4 7 1 3 Question 35 Điểm : --/2
Refer to the exhibit. Host C is able to ping 127.0.0.1 successfully, but is unable to communicate with hosts A and B in the organization. What is the likely cause of the problem? Chọn một phương án trả lời. Hosts A and B are not on the same subnet as host C. The subnet mask on host C is improperly configured. The FastEthernet interface fa0/0 of router 1 is wrongly configured. The IP addresses on the router serial interfaces are wrong. Question 36 Điểm : --/2 Refer to the exhibit. While configuring a network, a technician wired each end of a Category 5e cable as shown. Which two statements are true about this setup? (Choose two.) Chọn ít nhất một câu trả lời The cable is unusable and must be rewired. The cable is suitable for connecting a switch to a router Ethernet port. The cable is terminated in a way that the transmit pin is wired to the receive pin. The cable simulates a point-to-point WAN link. The cable is suitable for connecting dissimilar types of devices. Question 37 Điểm : --/2 What information can be gathered by using the command netstat? Chọn một phương án trả lời. active TCP connections the locally configured subnet mask the default gateway the routing protocol Question 38
Điểm : --/2 Refer to the exhibit. Host A is configured with the correct IP address for the default gateway of the router R1 FastEthernet0/1 interface. How will a packet that is sent from host A to host B be handled by the devices on the network? Chọn một phương án trả lời. R1 will forward the packet to its default gateway, the next hop router R2. R2 will forward the packet to the directly connected network 10.1.1.0/24. R1 will drop the packet because R1 does not have a specific route in its routing table to the 10.1.1.0/24 network. R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a route that is learned by a routing protocol to network 10.1.1.0/24. R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a default route to network 10.1.1.0/24. Question 39 Điểm : --/2 Which device should be used for enabling a host to communicate with another host on a different network? Chọn một phương án trả lời. hub router host switch Question 40 Điểm : --/2
Refer to the exhibit. Which list refers only to end devices? Chọn một phương án trả lời. A,H,B,C A,D,E,G A,D,E,F D,E,F,G Question 41 Điểm : --/2 Refer to the exhibit. Which type of network design is shown? Chọn một phương án trả lời. client/server peer-to-peer wide area dedicated server Question 42 Điểm : --/2 What information is contained in the header of Layer 3 to help data delivery? Chọn một phương án trả lời. port number destination host logical address device physical address virtual connection identifier Question 43
Điểm : --/2 Refer to the exhibit. Which two layers of the OSI model describe the same functions as the transport and internet layers of the TCP/IP model? (Choose two.) Chọn ít nhất một câu trả lời application layer physical layer presentation layer data link layer session layer transport layer network layer Question 44 Điểm : --/3 Refer to the exhibit. A host is using NAT to connect to the Internet. Which three IP addresses enable this connection? (Choose three.) Chọn ít nhất một câu trả lời 10.1.1.32 10.1.1.37 10.1.1.63 10.1.1.2 10.1.1.60
10.1.1.39 Question 45 Điểm : --/2 A network technician has made a UTP cable that is terminated as T568A on one end and T568B on the opposite end. What type of cable has been constructed? Chọn một phương án trả lời. console straight-through crossover patch Question 46 Điểm : --/2 Which range of port numbers are reserved for services that are commonly used by applications that run on servers? Chọn một phương án trả lời. 0 to 1023 49152 to 65535 1024 to 49151 0 to 255 Question 47 Điểm : --/2 When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data? Chọn một phương án trả lời. a connectionless acknowledgement Ethernet IP UDP an upper-layer, connection-oriented protocol or service Question 48 Điểm : --/3 Which of the following are the address ranges of the private IP addresses? (Choose three.) Chọn ít nhất một câu trả lời 200.100.50.0 to 200.100.25.255 150.150.0.0 to 150.150.255.255 172.16.0.0 to 172.31.255.255 10.0.0.0 to 10.255.255.255 192.168.0.0 to 192.168.255.255 127.16.0.0 to 127.31.255.255 Question 49 Điểm : --/3 Which three IPv4 addresses represent subnet broadcast addresses? (Choose three.) Chọn ít nhất một câu trả lời 192.168.4.191 /26 192.168.4.221 /27
192.168.4.95 /27 192.168.4.129 /26 192.168.4.51 /27 192.168.4.63 /26 Question 50 Điểm : --/2 Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is shown. Which default gateway IP address should be configured at the PC to enable this access? Chọn một phương án trả lời. 192.31.7.1 10.1.192.1 10.1.192.2 10.1.192.54