IST 452 Exam I

The last host address on the 10.15.25.0/24 network is [ ].

10.15.25.254

The network portion of the address 172.16.30.5/16 is [ ].

172.16

A packet leaving PC-1 has to traverse hops to reach PC-4.​

3

Refer to the exhibit. Which two network addresses can be assigned to the network containing 10 hosts? Your answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.) A. 10.18.10.224/28 B. 10.18.10.200/27 C. 10.18.10.200/28 D. 10.18.10.224/27 E. 10.18.10.208/28 F. 10.18.10.240/27

A. 10.18.10.224/28 E. 10.18.10.208/28

Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network? A. 192.133.219.1 B. 192.31.7.1 C. 192.135.250.1 D. 192.133.219.0

A. 192.133.219.1

A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created? A. 4 B. 2 C. 1 D. 8 E. 64 F. 16

A. 4

What is the decimal equivalent of the hexadecimal value of 3F? A. 63 B. 46 C. 45 D. 34 E. 18

A. 63

When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation? A. Flow Label B. Differentiated Services C. Next Header D. Traffic Class

A. Flow Label

What are two functions that are provided by the network layer? (Choose two.) A. directing data packets to destination hosts on other networks B. carrying data between processes that are running on source and destination hosts C. providing dedicated end-to-end connections D. placing data on the network medium E. providing end devices with a unique network identifier

A. directing data packets to destination hosts on other networks E. providing end devices with a unique network identifier

During the boot process, where will the router bootstrap program look for the IOS image by default? A. flash B. NVRAM C. RAM D. ROM

A. flash

A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task? A. shared memory buffering B. level 1 cache buffering C. fixed configuration buffering D. port-based buffering

A. shared memory buffering

Which number or set of numbers represents a socket? A. 01-23-45-67-89-AB B. 192.168.1.1:80 C. 10.1.1.15 D. 21

B. 192.168.1.1:80

Which process failed if a computer cannot access the Internet and received an IP address of 169.254.142.5? A. DNS B. DHCP C. IP D. HTTP

B. DHCP

A technician configures a switch with these commands: SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdown What is the technician configuring? A. password encryption B. SVI C. Telnet access D. physical switchport access

B. SVI

Which two statements are true regarding the user EXEC mode? (Choose two.) A. Global configuration mode can be accessed by entering the enable command. B. The device prompt for this mode ends with the ">" symbol. C. Only some aspects of the router configuration can be viewed. D. All router commands are available. E. Interfaces and routing protocols can be configured.

B. The device prompt for this mode ends with the ">" symbol. C. Only some aspects of the router configuration can be viewed.

What is an advantage of UDP over TCP? A. UDP communication is more reliable. B. UDP communication requires less overhead. C. UDP acknowledges received data. D. UDP reorders segments that are received out of order.

B. UDP communication requires less overhead.

What is a WAN? A. a network infrastructure that spans a limited physical area such as a city B. a network infrastructure that provides access to other networks over a large geographic area C. a network infrastructure designed to provide data storage, retrieval, and replication D. a network infrastructure that provides access in a small geographic area

B. a network infrastructure that provides access to other networks over a large geographic area

What is the purpose of protocols in data communications? A. specifying the device operating systems that will support the communication B. providing the rules required for a specific type of communication to occur C. dictating the content of the message sent during communication D. specifying the bandwidth of the channel or medium for each type of communication

B. providing the rules required for a specific type of communication to occur

Refer to the exhibit. One end of the cable is terminated as displayed, and the other end is terminated in accordance with the T568A standard. What type of cable would be created in this manner? A. crossover B. straight-through C. rollover D. fiber-optic

B. straight-through

Which statement is true about Cisco IOS ping indicators?​ A. '!' indicates that the ping was unsuccessful and that the device may have issues finding a DNS server. B. A combination of '.' and '!' indicates that a router along the path did not have a route to the destination address and responded with an ICMP unreachable message.​ C. 'U' may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful. D. '.' indicates that the ping was successful but the response time was longer than normal.

C. 'U' may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful.

A network engineer is subnetting the 10.0.240.0/20 network into smaller subnets. Each new subnet will contain between a minimum of 20 hosts and a maximum of 30 hosts. Which subnet mask will meet these requirements? A. 255.255.240.0 B. 255.255.255.240 C. 255.255.255.224 D. 255.255.224.0

C. 255.255.255.224

How many host addresses are available on the 192.168.10.128/26 network? A. 60 B. 32 C. 62 D. 30 E. 64

C. 62

What is an ISP? A. It is a protocol that establishes how computers within a local network communicate. B. It is a standards body that develops cabling and wiring standards for networking. C. It is an organization that enables individuals and businesses to connect to the Internet. D. It is a networking device that combines the functionality of several different networking devices in one.

C. It is an organization that enables individuals and businesses to connect to the Internet.`

An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device? A. Reload the device and type yes when prompted to save the configuration. B. Copy the information in the startup configuration file to the running configuration. C. Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed. D. Copy the running configuration to the startup configuration file.

C. Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed.

How does the network layer use the MTU value? A. To increase speed of delivery, the network layer ignores the MTU. B. The network layer depends on the higher level layers to determine the MTU. C. The MTU is passed to the network layer by the data link layer. D. The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it.

C. The MTU is passed to the network layer by the data link layer.

Refer to the exhibit. The exhibited configuration is entered by a network administrator into a new router. Sometime later a network technician proceeds to log in to the router via a console connection. The technician enters techadmin as the user name and tries a password of 63t0ut0fh3r3!. What will be the result of this action? A. The router will be locked for 2 minutes and 30 seconds. B. The router will deny access and display a banner message. C. The router will display the DT_ATC_RS3> prompt. D. The router will deny access and display an error message.

C. The router will display the DT_ATC_RS3> prompt.

Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet? A. Fragment Offset B. Header Length C. Time-to-Live D. Differentiated Services

C. Time-to-Live

Which TCP/IP model layer is closest to the end user? A. transport B. internet C. application D. network access

C. application

What does the IP address 192.168.1.15/29 represent? A. multicast address B. unicast address C. broadcast address D. subnetwork address

C. broadcast address

What is one of the most effective security tools available for protecting users from external threats? A. patch servers B. password encryption techniques C. firewalls D. router that run AAA services

C. firewalls

What are three responsibilities of the transport layer? (Choose three.) A. directing packets towards the destination network B. conducting error detection of the contents in frames C. identifying the applications and services on the client and server that should handle transmitted data D. multiplexing multiple communication streams from many users or applications on the same network E. formatting data into a compatible form for receipt by the destination devices F. meeting the reliability requirements of applications, if any

C. identifying the applications and services on the client and server that should handle transmitted data D. multiplexing multiple communication streams from many users or applications on the same network F. meeting the reliability requirements of applications, if any

What are two characteristics of a scalable network? (Choose two.) A. easily overloaded with increased traffic B. offers limited number of applications C. suitable for modular devices that allow for expansion D. grows in size without impacting existing users E. is not as reliable as a small network

C. suitable for modular devices that allow for expansion D. grows in size without impacting existing users

A small company has only one router as the exit point to its ISP. Which solution could be adopted to maintain connectivity if the router itself, or its connection to the ISP, fails? A. Activate another router interface that is connected to the ISP, so the traffic can flow through it. B. Add more interfaces to the router that is connected to the internal network. C. Purchase a second least-cost link from another ISP to connect to this router. D. Have a second router that is connected to another ISP.

D. Have a second router that is connected to another ISP.

Which two functions or operations are performed by the MAC sublayer? (Choose two.) A. It handles communication between upper and lower layers. B. It adds control information to network protocol layer data. C. It performs the function of NIC driver software. D. It adds a header and trailer to form an OSI Layer 2 PDU. E. It is responsible for Media Access Control.

D. It adds a header and trailer to form an OSI Layer 2 PDU. E. It is responsible for Media Access Control.

Which device acts as a gateway to allow hosts to send traffic to remote IP networks? A. DNS server B. local switch C. DHCP server D. Local Router

D. Local Router

At which layer of the OSI model would a physical address be encapsulated? A. network layer B. physical layer C. transport layer D. data link layer

D. data link layer

A college has five campuses. Each campus has IP phones installed. Each campus has an assigned IP address range. For example, one campus has IP addresses that start with 10.1.x.x. On another campus the address range is 10.2.x.x. The college has standardized that IP phones are assigned IP addresses that have the number 4X in the third octet. For example, at one campus the address ranges used with phones include 10.1.40.x, 10.1.41.x, 10.1.42.x, etc. Which two groupings were used to create this IP addressing scheme? (Choose two.) A. personnel type B. department C. support model D. device type E. geographic location

D. device type E. geographic location

Which method of data transfer allows information to be sent and received at the same time? A. multiplex B. half duplex C. simplex D. full duplex

D. full duplex

Which portion of the network layer address does a router use to forward packets? A. broadcast address B. host portion C. gateway address D. network portion

D. network portion

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet? A. subnetwork 192.168.1.8 subnet mask 255.255.255.224 B. subnetwork 192.168.1.128 subnet mask 255.255.255.192 C. subnetwork 192.168.1.32 subnet mask 255.255.255.240 D. subnetwork 192.168.1.64 subnet mask 255.255.255.192 E. subnetwork 192.168.1.64 subnet mask 255.255.255.240

D. subnetwork 192.168.1.64 subnet mask 255.255.255.192

Why is DHCP preferred for use on large networks? A. Large networks send more requests for domain to IP address resolution than do smaller networks. B. DHCP uses a reliable transport layer protocol. C. It prevents sharing of files that are copyrighted. D. Hosts on large networks require more IP addressing configuration settings than hosts on small networks. E. It is a more efficient way to manage IP addresses than static address assignment.

E. It is a more efficient way to manage IP addresses than static address assignment.

True or False? Mobile devices do not require IP addresses to communicate on the Internet.

False

On Ethernet networks, the hexadecimal address FF-FF-FF-FF-FF-FF represents the MAC address.

broadcast

The Ethernet [ ] sublayer is responsible for communicating directly with the physical layer.

mac

A router may have to fragment a packet when forwarding it from one medium to another medium that has a smaller [ ].

mtu

The acronym [ ] is used to define the process that allows multiple devices to share a single routable IP address.

pat

The component of the operating software that provides the user interface is called the

shell