Network+ (Networking Concepts)

Which of the following network protocols is used to resolve FQDNs to IP addresses? A. DNS B. FTP C. DHCP D. APIPA

A. DNS

Users have reported issues accessing an Internet website. The network technician wants to verify network layer connectivity. Which of the following tools can provide the verification? A. ping B. netstat C. route D. arp

A. ping

Which of the following switch features allows for both incoming and outgoing data across physical ports at the same time? A. Burst-frame B. Full-duplex C. Half-duplex D. VoIP

B. Full-duplex

A user wants to connect seven PCs together for a game night. Which of the following should the user install to help with this task? A. Media converter B. Switch C. Firewall D. Bridge

B. Switch

Spanning-Tree Protocol is used with which of the following networking devices? A. Router B. NIC C. Switch D. DHCP server

C. Switch

Given a subnet mask of 255.255.255.0, how many usable IP addresses would be in that subnet?

254

Which of the following is a class A IP address? A. 10.4.0.1 B. 169.254.0.1 C. 192.168.0.1 D. 254.200.0.1

A. 10.4.0.1

Which of the following is the fastest Ethernet technology? A. 10GBaseSR B. 10BaseT C. 100BaseFX D. 1000BaseT

A. 10GBaseSR

Which of the following TCP ports are used by FTP? A. 20 B. 21 C. 22 D. 23 E. 25 F. 80

A. 20 B. 21

An administrator notices SMTP traffic being blocked by the company firewall. Which of the following ports should be opened? A. 25 B. 53 C. 110 D. 443

A. 25

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

A. DHCP lease

Which of the following routing protocols utilizes the DUAL algorithm for determining best path? A. EIGRP B. RIPv2 C. OSPF D. RIP

A. EIGRP *Diffusing Update Algorithm (DUAL) guarantees loop-free operation and provides a mechanism for fast convergence.*

EIGRP is an example of a(n): A. IGP B. BGP

A. IGP

While working on a PC, a technician notices 0.0.0.0 in the routing table. Which of the following does this indicate? A. It is a default route B. This is the address for the DHCP server C. The PC has not been assigned an IP address D. The firewall is down

A. It is a default route

Which of the following protocols works at the lowest layer of the OSI model? A. L2TP B. PPTP C. ISAKMP D. IPSec

A. L2TP *Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider to enable the operation of a VPN over the Internet.*

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

A. Latency

Enterprise IP routing policy is MOST clearly depicted in which of the following configuration management documents? A. Logical network diagrams B. Physical network diagrams C. Wiring schematics D. Group security role assignments

A. Logical network diagrams

At which of the following layers do frames exist? (Select TWO) A. OSI model Data link layer B. TCP/IP model Network Interface layer C. OSI model Physical layer D. OSI model Network layer E. TCP/IP model Internet layer

A. OSI model Data link layer B. TCP/IP model Network Interface layer

If a NIC does not have a link light, there is a failure at which of the following OSI layers? A. Physical B. Session C. Data link D. Presentation

A. Physical

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. RDP B. RTP C. RIP D. RAS

A. RDP

Which of the following routing protocols support VLSM? A. RIPv2 B. OSPF C. IGRP D. IS-IS E. EIGRP F. BGP G. RIPv1

A. RIPv2 B. OSPF D. IS-IS E. EIGRP F. BGP

Which of the following properties of DHCP would a technician use to ensure an IP address is not leased out from the active scope? A. Reservations B. Lease times C. Removing IPs from the active leases D. Configuring the DNS options

A. Reservations

Which of the following can function in an unsecure mode? A. SNMPv3 B. SSH C. SSL D. SCP

A. SNMPv3

Which of the following networking devices can exist at several layers of the OSI model at the same time? (Select TWO) A. Switch B. Cable C. Repeater D. Router E. Bridge F. Hub

A. Switch D. Router

Which of the following uses the port 23 by default? A. Telnet B. IMAP C. FTP D. SNMP

A. Telnet

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 shaping

A. VLAN

Which of the following features can BEST be used to facilitate authorized remote access to a network? A. VPN concentrator B. Proxy server C. Content filter D. Load balancer

A. VPN concentrator

Which of the following protocols resolves IP addresses to MAC addresses? A. DNS B. ARP C. RARP D. NTP

B. ARP

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.

B. An incorrect subnet mask has been entered in the WAP configuration.

The APIPA address 169.254.10.123 falls into which of the following class of addresses? A. A B. B C. C D. D

B. B

Which of the following uses classless subnet masks across a network? A. Subnetting B. CIDR C. Supernetting D. Summarization

B. CIDR *Classless Inter-Domain Routing (CIDR) is based on variable length subnet masking(VLSM), which allows a network to be divided into variously sized subnets, providing the opportunity to size a network more appropriately for local needs.*

Which of the following is used to register and resolve IP addresses with their plain language equivalents? A. Proxy server B. DNS server C. Brouter equipment D. DHCP server

B. DNS server

On which of the following OSI model layers would a MAC address be used? A. Network B. Data Link C. Transport D. Physical

B. Data Link

A new user has a workstation that has connectivity to the printer located in her department, but cannot access the Internet. The result of an ipconfig command on the workstation is as follows: IP address: 192.168.0.124 Subnet Mask: 255.255.255.128 Default Gateway: 192.168.0.254 Which is most likely preventing the user from accessing the internet? A. Duplicate IP address B. Incorrect gateway C. Incorrect VLAN D. Bad switch port

B. Incorrect gateway

Which of the following would the telecommunications carrier use to segregate customer traffic over long fiber links? A. VLAN B. MPLS C. VPN D. PSTN

B. MPLS

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

B. Port filtering

Which of the following DHCP properties defines the size of the pool of available IP addresses? A. Options B. Scope C. Leases D. Reservations

B. Scope

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. TFTP

Which of the following is the definition of a DNS server? A. Hosts proprietary business applications B. Translates FQDN's to IP addresses C. Provides network IDS/IPS security D. Assigns IP addresses to network devices

B. Translates FQDN's to IP addresses

Which of the following commands displays the routing table on a server or workstation? A. nbtstat B. route C. traceroute D. nmap

B. route

designed to exchange routing and reachability information between autonomous systems

BGP (Border Gateway Protocol)

Which of the following is the common port used for IMAP? A. 25 B. 53 C. 143 D. 443

C. 143

Which of the following port numbers is used for SNMP? A. 61 B. 151 C. 161 D. 1611

C. 161

Which of the following IP address/subnet mask combinations represent a broadcast address? (Select TWO) A. 200.200.100.0/28 B. 200.200.100.32/27 C. 200.200.100.63/27 D. 200.200.100.79/27 E. 200.200.100.95/27 F. 200.200.100.254/30

C. 200.200.100.63/27 E. 200.200.100.95/27

Which of the TCP/IP model layers does the OSI model Presentation layer map to? A. Transport B. Internet C. Application D. Network Interface

C. Application

Which of the following network topologies would be separated into two networks if a client in the middle is removed or the cable is cut? A. Mesh B. Ring C. Bus D. Star

C. Bus

A proxy server would MOST likely be installed to provide which of the following functions? (Select TWO) A. Combines DNS and DHCP hosting B. Encryption C. Content filtering D. Fault tolerance E. Website caching

C. Content filtering E. Website caching

Discover, Offer, request, and Acknowledge are the steps for which of the following protocols? A. DNS B. DOS C. DHCP D. DSL

C. DHCP

In which of the following layers of the OSI model would MAC addressing be found? A. Network B. Application C. Data Link D. Transport

C. Data Link

Which of the following are link-state routing protocols? (Select TWO) A. RIP B. BGP C. IS-IS D. EIGRP E. OSPF

C. IS-IS E. OSPF

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. Improper VLAN assignment

Which of the following is the OSI layer that handles file compression such as LZMA or DEFLATE? A. Layer 3 B. Layer 5 C. Layer 6 D. Layer 7

C. Layer 6

Which of the following DNS records is used to identify a domains SMTP server? A. CNAME B. PTR C. MX D. A

C. MX *A Mail Exchanger record (MX) is a type of resource record in the DNS 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 SMTP

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 D. VPN

C. PAT

At which of the following layers of the OSI model does ASCII work? A. Session B. Transport C. Presentation D. Application

C. Presentation

Assigning the same IP address to a network device is which of the following? A. SSID B. Scope C. Reservation D. Lease

C. Reservation

In order to limit the number of dynamic addresses of hosts on a network, which of the following can be implemented? A. Scope options B. Leases C. Reservations D. DNS suffixes

C. Reservations

Which of the following is a common physical network topology? A. Cross-over B. Loopback C. Star D. Straight

C. Star

Which of the following is always true when a router selects a destination? A. The default gateway is selected over any other static or dynamic route. B. The shortest route is always selected C. The most specific route is selected over the default gateway. D. A dynamic route is selected over a directly attached network.

C. The most specific route is selected over the default gateway.

A technician replaces a failed router in an office with the same model unit using the default settings. After installation, the technician reboots all of the PCs and server. Upon reboot some of the PCs are receiving IP addresses on the same subnet as the new router; other PCs are receiving addresses on the same subnet as the servers. Which of the following most likely describes the issue? A. The DHCP lease pool was not large enough B. DHCP lease times were set too low C. The router is not the only DHCP server D. DHCP was not enabled on the replacement router

C. The router is not the only DHCP server

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

C. Tracert

A technician needs to ensure that traffic from a specific department is separated within several switches. Which of the following needs to be configured on the switch to separate the traffic? A. Duplex settings B. SNMP string C. VLAN assignments D. Spanning tree

C. VLAN assignments

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

C. WAP radio power

Which of the following LAN technologies is used to provide a maximum bandwidth of 1Gbps through singlemode fiber? A. 10GBaseLR B. 100BaseFX C. 100BaseTX D. 1000BaseX

D. 1000BaseX

Which of the following is an example of a Class C address? A. 10.19.0.79 B. 127.34.8.197 C. 176.96.1.222 D. 192.168.1.105

D. 192.168.1.105

A user is unable to access any network resources. The IP configuration of the workstation is as follows: IP Address: 192.168.10.32 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.10.46 Which of the following would allow the user to connect to network resources? A. Change the default gateway to 192.168.10.1 B. Change the default gateway to 192.168.10.254 C. Change the IP address to 192.168.10.31 D. Change the IP address to 192.168.10.33

D. Change the IP address to 192.168.10.33

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

D. Dynamic IP addressing

Which of the following OSI layers allows users to access network services such as file sharing? A. Layer 1 B. Layer 3 C. Layer 4 D. Layer 7

D. Layer 7 *Basically FTP is responsible for file transfer and that lies under the Application layer. (Layer 7)*

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

D. Physical E. Data Link

The network interface layer of the TCP/IP model corresponds with which of the following layers of the OSI model? (Select TWO) A. Transport layer B. Network layer C. Session layer D. Physical layer E. Presentation layer F. Data link layer

D. Physical layer F. Data link layer

Which of the following uses distance vector algorithms to determine the BEST network route to a destination address? A. IS-IS B. OSPF C. BGP D. RIP

D. RIP

Which of the following network protocols is used to transport email between serves? A. IMAP4 B. POP3 C. SNMP D. SMTP

D. SMTP

Which of the following provides secure access to a network device? A. SNMPv2 B. FTP C. RSH D. SSH

D. SSH

A network where all traffic feeds through a centralized gateway uses which of the following topologies? A. Peer-to-peer B. Ring C. Bus D. Star

D. Star

A user has a computer that has a link light on his NIC; however he is unable to access the Internet. Which of the following is the cause of the issue? A. Faulty GBIC B. Faulty SFP C. Cable is a crossover D. VLAN mismatch

D. VLAN mismatch

Which of the following is a path vector routing protocol? A. RIP B. EIGRP C. ISIS D. OSPF E. BGP

E. BGP *Because BGP involves a table of IP networks or "prefixes" which designate network reachability amoung autonomous systems (AS).*

As opposed to RIP, this routing protocol only sends incremental updates, reducing the workload on the router and the amount of data that needs to be transmitted.

EIGRP

an advanced distance-vector routing protocol that is used on a computer network to help automate routing decisions and configuration. It's available only on Cisco devices

EIGRP

a link state routing protocol and an interior gateway protocol, designed for use within an administrative domain or network. is more common in large service provider networks.

IS-IS

uses a link state routing algorithm and falls into the group of interior routing protocols, operating *within* a single autonomous system (AS) and perhaps the most widely used interior gateway protocol (IGP) in large enterprise networks

OSPF