McqMate
| 401. |
Which one of the following protocol is used to receive mail messages? |
| A. | smtp |
| B. | post office protocol (pop) |
| C. | internet message access protocol (imap) |
| D. | ftp |
| Answer» D. ftp | |
| 402. |
What is on-demand mail relay (ODMR)? |
| A. | protocol for smtp security |
| B. | an smtp extension |
| C. | protocol for web pages |
| D. | protocol for faster mail transfer |
| Answer» B. an smtp extension | |
| 403. |
An email client needs to know the _________ of its initial SMTP server. |
| A. | ip address |
| B. | mac address |
| C. | url |
| D. | name |
| Answer» A. ip address | |
| 404. |
An SMTP session may not include _______ |
| A. | zero smtp transaction |
| B. | one smtp transaction |
| C. | more than one smtp transaction |
| D. | one http transaction |
| Answer» D. one http transaction | |
| 405. |
SMTP defines _______ |
| A. | message transport |
| B. | message encryption |
| C. | message content |
| D. | message password |
| Answer» A. message transport | |
| 406. |
SMTP is not used to deliver messages to ______ |
| A. | user’s terminal |
| B. | user’s mailbox |
| C. | user’s word processor |
| D. | user’s email client |
| Answer» C. user’s word processor | |
| 407. |
The entire hostname has a maximum of ___________ |
| A. | 255 characters |
| B. | 127 characters |
| C. | 63 characters |
| D. | 31 characters |
| Answer» A. 255 characters | |
| 408. |
A DNS client is called _________ |
| A. | dns updater |
| B. | dns resolver |
| C. | dns handler |
| D. | none of the mentioned |
| Answer» B. dns resolver | |
| 409. |
Servers handle requests for other domains _______ |
| A. | directly |
| B. | by contacting remote dns server |
| C. | it is not possible |
| D. | none of the mentioned |
| Answer» B. by contacting remote dns server | |
| 410. |
DNS database contains _______ |
| A. | name server records |
| B. | hostname-to-address records |
| C. | hostname aliases |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 411. |
If a server has no clue about where to find the address for a hostname then _______ |
| A. | server asks to the root server |
| B. | server asks to its adjcent server |
| C. | request is not processed |
| D. | none of the mentioned |
| Answer» A. server asks to the root server | |
| 412. |
Wildcard domain names start with label _______ |
| A. | @ |
| B. | * |
| C. | & |
| D. | # |
| Answer» B. * | |
| 413. |
The domain name system is maintained by _______ |
| A. | distributed database system |
| B. | a single server |
| C. | a single computer |
| D. | none of the mentioned |
| Answer» A. distributed database system | |
| 414. |
Secure shell (SSH) network protocol is used for __________ |
| A. | secure data communication |
| B. | remote command-line login |
| C. | remote command execution |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 415. |
SSH can be used in only _____________ |
| A. | unix-like operating systems |
| B. | windows |
| C. | both unix-like and windows systems |
| D. | none of the mentioned |
| Answer» C. both unix-like and windows systems | |
| 416. |
SSH uses ___________ to authenticate the remote computer. |
| A. | public-key cryptography |
| B. | private-key cryptography |
| C. | any of public-key or private-key |
| D. | both public-key & private-key |
| Answer» A. public-key cryptography | |
| 417. |
Which standard TCP port is assigned for contacting SSH servers? |
| A. | port 21 |
| B. | port 22 |
| C. | port 23 |
| D. | port 24 |
| Answer» B. port 22 | |
| 418. |
Which one of the following is a file transfer protocol using SSH? |
| A. | scp |
| B. | sftp |
| C. | rsync |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 419. |
SSH-2 does not contain ______________ |
| A. | transport layer |
| B. | user authentication layer |
| C. | physical layer |
| D. | connection layer |
| Answer» C. physical layer | |
| 420. |
Which one of the following feature was present in SSH protocol, version 1? |
| A. | password changing |
| B. | periodic replacement of session keys |
| C. | support for public-key certificates |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 421. |
SCP protocol is evolved from __________ over SSH. |
| A. | rcp protocol |
| B. | dhcp protocol |
| C. | mgcp protocol |
| D. | gcp protocol |
| Answer» A. rcp protocol | |
| 422. |
Which one of the following authentication method is used by SSH? |
| A. | public-key |
| B. | host based |
| C. | password |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 423. |
DHCP (dynamic host configuration protocol) provides __________ to the client. |
| A. | ip address |
| B. | mac address |
| C. | url |
| D. | none of the mentioned |
| Answer» A. ip address | |
| 424. |
DHCP is used for ________ |
| A. | ipv6 |
| B. | ipv4 |
| C. | both ipv6 and ipv4 |
| D. | none of the mentioned |
| Answer» C. both ipv6 and ipv4 | |
| 425. |
The DHCP server _________ |
| A. | maintains a database of available ip addresses |
| B. | maintains the information about client configuration parameters |
| C. | grants a ip address when receives a request from a client |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 426. |
IP assigned for a client by DHCP server is |
| A. | for a limited period |
| B. | for an unlimited period |
| C. | not time dependent |
| D. | none of the mentioned |
| Answer» A. for a limited period | |
| 427. |
DHCP uses UDP port _________ for sending data to the server. |
| A. | 66 |
| B. | 67 |
| C. | 68 |
| D. | 69 |
| Answer» B. 67 | |
| 428. |
DHCP client and servers on the same subnet communicate via _________ |
| A. | udp broadcast |
| B. | udp unicast |
| C. | tcp broadcast |
| D. | tcp unicast |
| Answer» A. udp broadcast | |
| 429. |
WPA2 is used for security in _______ |
| A. | ethernet |
| B. | bluetooth |
| C. | wi-fi |
| D. | |
| Answer» C. wi-fi | |
| 430. |
VPNs are financially speaking __________ |
| A. | always more expensive than leased lines |
| B. | always cheaper than leased lines |
| C. | usually cheaper than leased lines |
| D. | usually more expensive than leased lines |
| Answer» C. usually cheaper than leased lines | |
| 431. |
Storage management comprises of _______________ |
| A. | san management |
| B. | data protection |
| C. | disk operation |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 432. |
Which of the following is not a storage device? |
| A. | switch |
| B. | raid arrays |
| C. | tape drives |
| D. | hub |
| Answer» D. hub | |
| 433. |
Which protocols are used for Storage management? |
| A. | snmp |
| B. | ldap |
| C. | pop3 |
| D. | mib |
| Answer» A. snmp | |
| 434. |
How do Storage administrators ensure secure access to storage devices? |
| A. | by using zoning |
| B. | by putting a physical lock on the storage device |
| C. | by keeping devices shutdown when not in use |
| D. | by keeping devices when used |
| Answer» A. by using zoning | |
| 435. |
Effective Storage management does not include __________ |
| A. | security |
| B. | backups |
| C. | reporting |
| D. | connection |
| Answer» D. connection | |
| 436. |
SMI-S Standard uses which of the following? |
| A. | java rmi |
| B. | cim-xml/http |
| C. | corba |
| D. | .net |
| Answer» B. cim-xml/http | |
| 437. |
Full duplex mode increases the capacity of each domain by ________ |
| A. | 10 to 20 mbps |
| B. | 20 to 30 mbps |
| C. | 30 to 40 mbps |
| D. | 40 to 50 mbps |
| Answer» A. 10 to 20 mbps | |
| 438. |
Configuration management can be divided into which two subsystems? |
| A. | reconfiguration and documentation |
| B. | management and configuration |
| C. | documentation and dialing up |
| D. | configuration and dialing up |
| Answer» A. reconfiguration and documentation | |
| 439. |
To use a Simple Network Management System, we need _______ |
| A. | servers |
| B. | ip |
| C. | protocols |
| D. | rules |
| Answer» D. rules | |
| 440. |
The main difference between SNMPv3 and SNMPv2 is _______ |
| A. | management |
| B. | integration |
| C. | classification |
| D. | enhanced security |
| Answer» D. enhanced security | |
| 441. |
BER stands for ________ |
| A. | basic encoding rules |
| B. | basic encoding resolver |
| C. | basic encoding rotator |
| D. | basic encoding router |
| Answer» A. basic encoding rules | |
| 442. |
SNMP is the framework for managing devices in an internet using the ______ |
| A. | tcp/ip protocol |
| B. | udp |
| C. | smtp |
| D. | none |
| Answer» A. tcp/ip protocol | |
| 443. |
Structure of Management Information (SMI), is the guideline of ________ |
| A. | http |
| B. | snmp |
| C. | url |
| D. | mib |
| Answer» B. snmp | |
| 444. |
The application layer protocol used by a Telnet application is ________ |
| A. | telnet |
| B. | ftp |
| C. | http |
| D. | smtp |
| Answer» A. telnet | |
| 445. |
_______ allows you to connect and login to a remote computer |
| A. | telnet |
| B. | ftp |
| C. | http |
| D. | smtp |
| Answer» A. telnet | |
| 446. |
Telnet is used for _______ |
| A. | television on net |
| B. | network of telephones |
| C. | remote login |
| D. | teleshopping site |
| Answer» C. remote login | |
| 447. |
Which one of the following is not correct? |
| A. | telnet is a general purpose client-server program |
| B. | telnet lets user access an application on a remote computer |
| C. | telnet can also be used for file transfer |
| D. | telnet can be used for remote login |
| Answer» C. telnet can also be used for file transfer | |
| 448. |
Which operating mode of telnet is full duplex? |
| A. | default mode |
| B. | server mode |
| C. | line mode |
| D. | character mode |
| Answer» C. line mode | |
| 449. |
If we want that a character be interpreted by the client instead of server _________ |
| A. | interpret as command (iac) escape character has to be used |
| B. | control functions has to be disabled |
| C. | it is not possible |
| D. | cli character has to be used |
| Answer» A. interpret as command (iac) escape character has to be used | |
| 450. |
Telnet protocol is used to establish a connection to __________ |
| A. | tcp port number 21 |
| B. | tcp port number 22 |
| C. | tcp port number 23 |
| D. | tcp port number 25 |
| Answer» C. tcp port number 23 | |
| 451. |
Which one of the following is not true? |
| A. | telnet defines a network virtual terminal (nvt) standard |
| B. | client programs interact with nvt |
| C. | server translates nvt operations |
| D. | client can transfer files using to remote server using nvt |
| Answer» D. client can transfer files using to remote server using nvt | |
| 452. |
All telnet operations are sent as ________ |
| A. | 4 bits |
| B. | 8 bits |
| C. | 16 bits |
| D. | 32 bits |
| Answer» B. 8 bits | |
| 453. |
AbsoluteTelnet is a telnet client for _______ Operating system. |
| A. | windows |
| B. | linux |
| C. | mac |
| D. | ubuntu |
| Answer» A. windows | |
| 454. |
The decimal code of Interpret as Command (IAC) character is _______ |
| A. | 252 |
| B. | 253 |
| C. | 254 |
| D. | 255 |
| Answer» D. 255 | |
| 455. |
Which of the following is false with respect to TCP? |
| A. | connection-oriented |
| B. | process-to-process |
| C. | transport layer protocol |
| D. | unreliable |
| Answer» D. unreliable | |
| 456. |
In TCP, sending and receiving data is done as _______ |
| A. | stream of bytes |
| B. | sequence of characters |
| C. | lines of data |
| D. | packets |
| Answer» A. stream of bytes | |
| 457. |
TCP groups a number of bytes together into a packet called _______ |
| A. | packet |
| B. | buffer |
| C. | segment |
| D. | stack |
| Answer» C. segment | |
| 458. |
Communication offered by TCP is ________ |
| A. | full-duplex |
| B. | half-duplex |
| C. | semi-duplex |
| D. | byte by byte |
| Answer» A. full-duplex | |
| 459. |
The value of acknowledgement field in a segment defines _______ |
| A. | sequence number of the byte received previously |
| B. | total number of bytes to receive |
| C. | sequence number of the next byte to be received |
| D. | sequence of zeros and ones |
| Answer» C. sequence number of the next byte to be received | |
| 460. |
Size of TCP segment header ranges between ___________ |
| A. | 16 and 32 bytes |
| B. | 16 and 32 bits |
| C. | 20 and 60 bytes |
| D. | 20 and 60 bits |
| Answer» C. 20 and 60 bytes | |
| 461. |
Connection establishment in TCP is done by which mechanism? |
| A. | flow control |
| B. | three-way handshaking |
| C. | forwarding |
| D. | synchronization |
| Answer» B. three-way handshaking | |
| 462. |
SYNC flooding attack belongs to a type of security attack known as ___________ |
| A. | sync flooding attack |
| B. | active attack |
| C. | passive attack |
| D. | denial-of-service attack |
| Answer» D. denial-of-service attack | |
| 463. |
What allows TCP to detect lost segments and in turn recover from that loss? |
| A. | sequence number |
| B. | acknowledgment number |
| C. | checksum |
| D. | both sequence & acknowledgment number |
| Answer» B. acknowledgment number | |
| 464. |
Which of the following is false with respect to UDP? |
| A. | connection-oriented |
| B. | unreliable |
| C. | transport layer protocol |
| D. | low overhead |
| Answer» A. connection-oriented | |
| 465. |
Return value of the UDP port “Chargen” is _______ |
| A. | string of characters |
| B. | string of integers |
| C. | array of characters with integers |
| D. | array of zero’s and one’s |
| Answer» A. string of characters | |
| 466. |
Beyond IP, UDP provides additional services such as _______ |
| A. | routing and switching |
| B. | sending and receiving of packets |
| C. | multiplexing and demultiplexing |
| D. | demultiplexing and error checking |
| Answer» D. demultiplexing and error checking | |
| 467. |
What is the main advantage of UDP? |
| A. | more overload |
| B. | reliable |
| C. | low overhead |
| D. | fast |
| Answer» C. low overhead | |
| 468. |
Port number used by Network Time Protocol (NTP) with UDP is ________ |
| A. | 161 |
| B. | 123 |
| C. | 162 |
| D. | 124 |
| Answer» B. 123 | |
| 469. |
What is the header size of a UDP packet? |
| A. | 8 bytes |
| B. | 8 bits |
| C. | 16 bytes |
| D. | 124 bytes |
| Answer» A. 8 bytes | |
| 470. |
The port number is “ephemeral port number”, if the source host is _______ |
| A. | ntp |
| B. | echo |
| C. | server |
| D. | client |
| Answer» D. client | |
| 471. |
“Total length” field in UDP packet header is the length of _________ |
| A. | only udp header |
| B. | only data |
| C. | only checksum |
| D. | udp header plus data |
| Answer» D. udp header plus data | |
| 472. |
Which is the correct expression for the length of UDP datagram? |
| A. | udp length = ip length – ip header’s length |
| B. | udp length = udp length – udp header’s length |
| C. | udp length = ip length + ip header’s length |
| D. | udp length = udp length + udp header’s length |
| Answer» A. udp length = ip length – ip header’s length | |
| 473. |
The ______ field is used to detect errors over the entire user datagram. |
| A. | udp header |
| B. | checksum |
| C. | source port |
| D. | destination port |
| Answer» B. checksum | |
| 474. |
IPsec defines two protocols: _______ and ________ |
| A. | ah; ssl |
| B. | pgp; esp |
| C. | ah; esp |
| D. | pgp; ssl |
| Answer» C. ah; esp | |
| 475. |
IP Security operates in which layer of the OSI model? |
| A. | network |
| B. | transport |
| C. | application |
| D. | physical |
| Answer» A. network | |
| 476. |
ESP does not provide ________ |
| A. | source authentication |
| B. | data integrity |
| C. | privacy |
| D. | error control |
| Answer» D. error control | |
| 477. |
Two broad categories of congestion control are |
| A. | open-loop and closed-loop |
| B. | open-control and closed-control |
| C. | active control and passive control |
| D. | active loop and passive loop |
| Answer» A. open-loop and closed-loop | |
| 478. |
In open-loop control, policies are applied to __________ |
| A. | remove after congestion occurs |
| B. | remove after sometime |
| C. | prevent before congestion occurs |
| D. | prevent before sending packets |
| Answer» C. prevent before congestion occurs | |
| 479. |
Retransmission of packets must not be done when _______ |
| A. | packet is lost |
| B. | packet is corrupted |
| C. | packet is needed |
| D. | packet is error-free |
| Answer» D. packet is error-free | |
| 480. |
Discarding policy is mainly done by _______ |
| A. | sender |
| B. | receiver |
| C. | router |
| D. | switch |
| Answer» C. router | |
| 481. |
Closed-Loop control mechanisms try to _________ |
| A. | remove after congestion occurs |
| B. | remove after sometime |
| C. | prevent before congestion occurs |
| D. | prevent before sending packets |
| Answer» A. remove after congestion occurs | |
| 482. |
Backpressure technique can be applied only to _______ |
| A. | congestion networks |
| B. | closed circuit networks |
| C. | open circuit networks |
| D. | virtual circuit networks |
| Answer» D. virtual circuit networks | |
| 483. |
The packet sent by a node to the source to inform it of congestion is called _______ |
| A. | explicit |
| B. | discard |
| C. | choke |
| D. | backpressure |
| Answer» C. choke | |
| 484. |
Which of the following is not a characteristic of Virtual Circuit Network? |
| A. | there are setup and teardown phases in addition to the data transfer phase |
| B. | resources can be allocated during setup phase or on demand |
| C. | all packets follow the same path established during the connection |
| D. | virtual circuit network is implemented in application layer |
| Answer» D. virtual circuit network is implemented in application layer | |
| 485. |
Which of the following is not a phase of virtual circuit network? |
| A. | setup phase |
| B. | data transfer phase |
| C. | termination phase |
| D. | teardown phase |
| Answer» C. termination phase | |
| 486. |
Steps required in setup process are ___________ |
| A. | setup request and acknowledgement |
| B. | setup request and setup response |
| C. | setup request and setup termination |
| D. | setup and termination steps |
| Answer» A. setup request and acknowledgement | |
| 487. |
Delay of the resource allocated during setup phase during data transfer is ________ |
| A. | constant |
| B. | increases for each packet |
| C. | same for each packet |
| D. | different for each packet |
| Answer» C. same for each packet | |
| 488. |
Delay of the resource allocated on demand during data transfer is ________ |
| A. | constant |
| B. | increases for each packet |
| C. | same for each packet |
| D. | different for each packet |
| Answer» D. different for each packet | |
| 489. |
In data transfer phase, how many columns does the table contain? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 490. |
ATM and frame relay are ________ |
| A. | virtual circuit networks |
| B. | datagram networks |
| C. | virtual private networks |
| D. | virtual public networks |
| Answer» A. virtual circuit networks | |
| 491. |
ATM uses _______________ |
| A. | asynchronous frequency division multiplexing |
| B. | asynchronous time division multiplexing |
| C. | asynchronous space division multiplexing |
| D. | asynchronous amplitude division multiplexing |
| Answer» B. asynchronous time division multiplexing | |
| 492. |
ATM standard defines _______ layers. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 493. |
ATM can be used for ________ |
| A. | local area network |
| B. | wide area network |
| C. | campus area network |
| D. | networks covering any range |
| Answer» D. networks covering any range | |
| 494. |
An ATM cell has the payload field of __________ |
| A. | 32 bytes |
| B. | 48 bytes |
| C. | 64 bytes |
| D. | 128 bytes |
| Answer» B. 48 bytes | |
| 495. |
Frame relay has error detection at the ______ |
| A. | physical layer |
| B. | data link layer |
| C. | network layer |
| D. | transport layer |
| Answer» B. data link layer | |
| 496. |
Virtual circuit identifier in frame relay is called ______ |
| A. | data link connection identifier |
| B. | frame relay identifier |
| C. | cell relay identifier |
| D. | circuit connection identifier |
| Answer» A. data link connection identifier | |
| 497. |
Frame relay has _______ |
| A. | only physical layer |
| B. | only data link layer |
| C. | only network layer |
| D. | both physical and data link layer |
| Answer» D. both physical and data link layer | |
| 498. |
In frame relay networks, extended address is used _______ |
| A. | to increase the range of data link connection identifiers |
| B. | for error detection |
| C. | for encryption |
| D. | for error recovery |
| Answer» A. to increase the range of data link connection identifiers | |
| 499. |
What is FRAD in frame relay network? |
| A. | frad assembles and disassembles the frames coming from other protocols |
| B. | frad is used for modulation and demodulation |
| C. | frad is used for error detection |
| D. | frad is used for error recovery |
| Answer» A. frad assembles and disassembles the frames coming from other protocols | |
| 500. |
Frame Relay is cheaper than other _____ |
| A. | lans |
| B. | wans |
| C. | mans |
| D. | multipoint networks |
| Answer» B. wans | |
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