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C. Improper VLAN assignment Explanation: Finance Server is placed in same VLAN which is assigned to finance users if they are able to access internet that's means connectivity to switch is good, so we have to check the VLAN assigned to users. - correct answer Several users from the finance department report that they are able to access the Internet, but unable to connect to their financial applications. The network technician is unable to ping the finance server. The technician decides to check the switch and determines that Internet access is working. Which of the following is a possible cause of the access issues? A. Faulty cable B. Remote management disabled C. Improper VLAN assignment D. Mismatched duplex C. WAP radio power Explanation: WAP radio power is the signal strength through which you can specify the range from which you can stay connected to the network and access internet. Here, when the user is not able to maintain a stable connection then it is a problem with the signal strength for sure so you can try to increase the signal strength by increasing the radio power. - correct answer A user's laptop is unable to keep a stable network connection. Which of the following measures would MOST likely need to be configured? A. SSID name B. WAP encryption strength
C. WAP radio power D. Channel overlay D. Physical E. Data Link Explanation: The network layer is responsible for packet forwarding including routing through intermediate routers, whereas the data link layer is responsible for media access control, flow control and error checking - correct answer The Network Interface Layer of the TCP/IP model corresponds to which of the following layers of the OSI model? (Select TWO). A. Network B. Session C. Transport D. Physical E. Data link C. Data Link Explanation: The ITU-T G.hn standard, which provides high-speed local area networking over existing wires (power lines, phone lines and coaxial cables), includes a complete data link layer which provides both error correction and flow control by means of a selective repeat Sliding Window Protocol.
- correct answer In which of the following layers of the OSI model would MAC addressing be found? A. Network B. Application
Explanation: The ITU-T G.hn standard, which provides high-speed local area networking over existing wires (power lines, phone lines and coaxial cables), includes a complete data link layer which provides both error correction and flow control by means of a selective repeat Sliding Window Protocol.
- correct answer On which of the following OSI model layers would a MAC address be used? A. Network B. Data Link C. Transport D. Physical D. VLAN mismatch Explanation: As user has link light on NIC that means he has connectivity with switch so he need to check his vlan assignment - correct answer Joe, a user, has a computer that has a link light on his network interface card (NIC); however, Joe is unable to access the Internet. Which of the following is the cause of this issue? A. Faulty GBIC B. Faulty SFP C. Cable is a crossover D. VLAN mismatch A. Latency Explanation: During the high ping time users are using most of the bandwidth that causes latency so signal strength get affected by this. - correct answer A network technician is troubleshooting signal problems with certain WAPs in an office and finds consistently high ping times across the units. Such an issue is called which of the following?
A. Latency B. Attenuation C. Crosstalk D. Frequency hopping C. Application The Application layer provides applications the ability to access the services of the other layers and defines the protocols that applications use to exchange data. There are many Application layer protocols and new protocols are always being developed. - correct answer Which of the following TCP/IP model layers does the OSI model Presentation layer map to? A. Transport B. Internet C. Application D. Network Interface C. PAT Port Address Translation (PAT), is an extension to network address translation (NAT) that permits multiple devices on a local area network (LAN) to be mapped to a single public IP address. The goal of PAT is to conserve IP addresses. - correct answer A customer wants to keep cost to a minimum and has only ordered a single static IP address from the ISP. Which of the following must be configured on the router to allow for all the computers to share the same public IP address? A. VLANs B. PoE C. PAT
C. Switch Explanation: Spanning Tree Protocol (STP) is a Layer 2 protocol that runs on bridges and switches. The specification for STP is IEEE 802.1D. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network. Loops are deadly to a network. - correct answer Spanning-Tree Protocol is used with which of the following network devices? A. Router B. NIC C. Switch D. DHCP server A. DHCP lease Explanation: By default, each IP address assigned by a DHCP Server comes with a one-day lease, which is the amount of time that the address is valid. - correct answer Which of the following defines the amount of time a host retains a specific IP address before it is renewed or released? A. DHCP lease B. DNS suffix C. Subnet mask D. DHCP reservation C. Tracert Explanation: Tracet command will tell the administrator which route is not present or which is present so he will
come to know whether he has appropriate route or not. - correct answer Users are reporting that some Internet websites are not accessible anymore. Which of the following will allow the network administrator to quickly isolate the remote router that is causing the network communication issue, so that the problem can be reported to the appropriate responsible party? A. Ping B. Protocol analyzer C. Tracert D. Dig A. VLAN Explanation: A VLAN is a group of end stations in a switched network that is logically segmented by function, project team, or application, without regard to the physical locations of the users. VLANs have the same attributes as physical LANs, but you can group end stations even if they are not physically located on the same LAN segment. - correct answer A technician wants to separate networks on a switch. Which of the following should be configured to allow this? A. VLAN B. Trunking C. Spanning tree D. Traffic filtering B. Switch Explanation: They connect multiple PCs, printers, servers and other hardware. Switches allow you to send
Explanation: The Internet Message Access Protocol (commonly known as IMAP) is an Application Layer Internet protocol that allows an e-mail client to access e-mail on a remote mail server. The current version, IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501. An IMAP server typically listens on well-known port 143 - correct answer Which of the following is the common port used for IMAP? A. 25 B. 53 C. 143 D. 443 A. DNS Explanation: An Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate to 198.105.232.4. - correct answer Which of the following network protocols is used to resolve FQDNs to IP addresses? A. DNS B. FTP C. DHCP D. APIPA
D. SMTP
Explanation: While electronic mail servers and other mail transfer agents use SMTP to send and receive mail messages, user-level client mail applications typically use SMTP only for sending messages to a mail server for relaying - correct answer Which of the following network protocols is used to transport email between servers? A. IMAP B. POP C. SNMP D. SMTP B. An incorrect subnet mask has been entered in the WAP configuration. Explanation: Due to wrong subnet entered user is unable to communicate with anyone so to communicate he needs to be in right subnet. - correct answer Ann, a technician, installs a new WAP and users are able to connect; however, users cannot access the Internet. Which of the following is the MOST likely cause of the problem? A. The signal strength has been degraded and latency is increasing hop count. B. An incorrect subnet mask has been entered in the WAP configuration. C. The signal strength has been degraded and packets are being lost. D. Users have specified the wrong encryption type and routes are being rejected. A. ping Explanation: Ping is a computer network administration utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the
malicious users. - correct answer Network upgrades have been completed and the WINS server was shutdown. It was decided that NetBIOS network traffic will no longer be permitted. Which of the following will accomplish this objective? A. Content filtering B. Port filtering C. MAC filtering D. IP filtering D. Dynamic IP addressing Explanation: In Dynamic IP addressing all the hosts with private ip address will be patted to the same ip so the administrator will not have to keep track of each and every host with private ip mapped to a static public ip address. - correct answer Companies trying to cut down on constant documentation of IP addresses could use which of the following? A. Longer lease times B. More reservations C. Larger scopes D. Dynamic IP addressing B. Scope Explanation: A range of IP addresses that are available to be leased to DHCP clients by the DHCP Server service. - correct answer Which of the following DHCP properties defines the size of the pool of available IP addresses?
A. Options B. Scope C. Leases D. Reservations A. L2TP Explanation: Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet. - correct answer Which of the following protocols works at the LOWEST layer of the OSI model? A. L2TP B. PPTP C. ISAKMP D. IPSec A. RDP Explanation: Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft, which provides a user with a graphical interface to connect to another computer over a network connection. The user employs RDP client software for this purpose, while the other computer must run RDP server software. - correct answer An employee connects to a work computer from home via the built- in Windows remote desktop connection. Which of the following is MOST likely being used to establish the connection?
A. nbtstat B. route C. traceroute D. nmap C. Presentation Explanation: The presentation layer is responsible for the delivery and formatting of information to the application layer for further processing or display. It relieves the application layer of concern regarding syntactical differences in data representation within the end-user systems. An example of a presentation service would be the conversion of an EBCDIC-coded text computer file to an ASCII-coded file. - correct answer At which of the following layers of the OSI model does ASCII work? A. Session B. Transport C. Presentation D. Application A. TELNET Explanation: Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over
the Transmission Control Protocol (TCP). - correct answer Which of the following uses port 23 by default? A. TELNET B. IMAP C. FTP D. SNMP C. Reservation Explanation: You might want to assign network printers and certain servers DHCP reservations to ensure that they always have the same IP address, but continue to receive updated configuration information from the DHCP server. For example, create reservations for servers that must always have the same IP address. - correct answer Assigning the same IP address to a network device is which of the following? A. SSID B. Scope C. Reservation D. Lease A. OSI model Data link layer B. TCP/IP model Network Interface layer Explanation: The data link layer is concerned with local delivery of frames between devices on the same LAN. Data-link frames, as these protocol data units are called, do not cross the boundaries of a local network. Inter-network routing and global addressing are higher layer functions, allowing data- link
D. Change the IP address to 192.168.10. C. MX Explanation: A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain, and a preference value used to prioritize mail delivery if multiple mail servers are available. The set of MX records of a domain name specifies how email should be routed with the Simple Mail Transfer Protocol (SMTP). - correct answer Which of the following DNS records is used to identify a domain's SMTP server? A. CNAME B. PTR C. MX D. A A. 20 B. 21 Explanation: FTP uses two ports by default: 21 for sending commands, and 20 for sending data. For instance if you said "FTP " it would make the attempt using port 21. If the session was established, port 20 would be using for the data. NotE. These are the default ports which is what I assume you were asking. A server administrator can however configure FTP to use whatever port he defines. - correct answer Which of the following TCP ports are used by FTP? (Select TWO). A. 20
B. 21
C. 22
D. 23
E. 25
F. 80
B. TFTP
Explanation: Trivial File Transfer Protocol (TFTP) is a file transfer protocol notable for its simplicity. It is generally used for automated transfer of configuration or boot files between machines in a local environment. Compared to FTP, TFTP is extremely limited, providing no authentication, and is rarely used interactively by a user. - correct answer Which of the following protocols is MOST commonly used for the transfer of router configuration files? A. SSL B. TFTP C. DNS D. IMAP B. ARP Explanation: ARP is used to convert an IP address to a physical address such as an Ethernet address. ARP has been implemented with many combinations of network and data link layer technologies, such as IPv4, Chaosnet, DECnet and Xerox PARC Universal Packet (PUP) using IEEE 802 standards, FDDI, X.25, Frame Relay and Asynchronous Transfer Mode (ATM). IPv4 over IEEE 802.3 and
